Aitecs 2016 Service Manual

1. INTRODUCTION 1.1.

GENERAL INFORMATION

The AITECS 2016 syringe pump is designed to accurately control the delivery of solution to the patient by means of a disposable syringe. The AITECS 2016 syringe pump is compatible with a wide range of standard, single-use, disposable Luer-lock syringes, ranging from 5 ml to 60 ml in size. This SERVICE MANUAL describes the theory of operation, how to check, troubleshoot and repair AITECS 2016 syringe infusion pump. Ensure that you are fully familiar with this equipment by carefully studying the Operator’s Manual and this Service Manual prior to attempting any repairs or servicing. 1.2.

GENERAL PRECAUTION

Please read the general Operating Precautions described in the Operator’s Manual carefully prior to using this syringe pump.

This pump contains static-sensitive components. Observe strict precautions for the protection of static sensitive components when attempting to repair and service the syringe pump.

An explosion hazard exists if the syringe pump is used in the presence of flammable materials. Exercise care to locate the pump away from any such hazardous sources. An electrical shock hazard exists if the syringe pump casing is opened or removed. Refer all servicing to qualified service personnel.

This syringe pump is protected against the effects of high energy radio frequency emissions and is designed to fail safe if extremely high levels of interference are encountered. Should false alarm condition be encountered, either remove the source of the interference or regulate the infusion by another appropriate means.

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If the syringe pump is dropped, subjected to excessive moisture, humidity or high temperature, or otherwise suspected to have been damaged, remove it from service for inspection by qualified service personnel. 1.3.

SERVICE CONTACT

VILTECHMEDA, 125 Kalvarijų Str., 08221 Vilnius, Lithuania E-mail: [email protected] Tel. : +370-52-737509

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2. TECHNICAL DESCRIPTION 2.1.

GENERAL

The Block Diagram of the syringe pump is given in the section 7.1. The Electrical Schematic Diagram is given in the section 7.2. The syringe pump is composed of the following elements: -

Keypad Syringe barrel sensor Syringe size sensor Main Electronic board (MEB) Pusher sensors unit Motor Encoder Pressure sensor Pusher home sensors Drive Unit board Switching power supply Battery unit IrDA unit Power supply unit

Below follows a description of these elements, refer the appropriate diagram for full understanding of the functionality: 2.1.1.

Keypad

Keypad comprises of a 6 x 4 key matrix connected to the Main Electronic board at connector JP3. ON/OFF key, C key and BATTERY & MAINS LED’s are also located on the keypad. 2.1.2.

Syringe barrel sensor

The syringe barrel sensor comprises photo interrupter D1. When the syringe is loaded, the shutter is drawn out of the slot of the photo interrupter D1, enabling its optical link. The LED of the photo interrupter is supplied with pulse-modulated current through pin 3 of JP4 connector of the Main Electronic board. 2.1.3.

Syringe size sensor

The syringe size sensing is achieved using the linear potentiometer R1. The signal from the potentiometer slider is applied to the Main Electronic board via pin 2 of JP8 connector. 2.1.4.

Pusher sensors unit

The plunger push-button sensors are composed of two photo interrupters D1, D2. The grippers latched sensor comprises photo interrupter D3. The LED’s of the photo interrupters are supplied with pulse-modulated current through pin 3 of JP8 connector of the Drive Unit board. When the syringe is loaded, the shutter is outside the slot of D1 is and inside the slot of D2. When the syringe is loaded, the shutter controlling the photo interrupter D3 is outside of its slot.

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2.1.5.

Motor

A two-phase bipolar stepper motor with 1.8º step-angle is used in the pump drive. The motor is connected to the Drive Unit board via connector P6 and is driven in micro stepping mode. There are 200 steps to complete one full revolution of the motor shaft. The motor is connected to the lead screw by means of timing belt. The belt ratio is 1.6(6):1; as a result 333.3(3) motor steps move the drive carriage by 1.25 mm. 2.1.6.

Encoder

Motor speed and direction is monitored by means of the encoder. It is composed of two photointerrupters D1, D2 and a 12 slot-encoding disk mounted on the lead screw. Quadrature signals (Tax1, Tax2) are transferred to the Drive Unit board via JP5 connector. 2.1.7.

Pressure sensor

As a pressure sensor is used a strain gauge TZ1 mounted on a steel plate. When this plate is deflected by applied force on the plunger, a differential voltage is generated at gauge output. This signal, which magnitude is proportional to the applied force, is transferred to the Drive Unit board. 2.1.8.

Pusher home sensor

The pusher home sensors are composed of two photo interrupters D1, D2. When the syringe pusher is in the right end position, the shutter is outside the slot of D1 is and inside the slot of D2. 2.1.9.

Switching power supply

A 30W single output 12V, 2.5A medical type switching power supply is used in the pump. 2.1.10. Battery unit The battery unit comprises the Ni-MH (7,2V x 2.5Ah) battery GB1 together with the battery monitoring circuit. The integrated circuit U1 monitors battery voltage, temperature and charge/discharge current. This data is used to calculate battery charge state and remaining working time when pump runs on battery. Data is transferred to the microcontroller via 1-Wire interface (pin 4 of the JP1 connector). R2 is a current sense resistor; R3 and C1 constitute a low pass filter for the current monitoring circuit. Thermistor R1 terminates battery charging if battery temperature exceeds the permissible value. The resettable fuse F1 protects against a short circuit of the battery. 2.1.11. IrDA unit Serial infrared data communication is operating in accordance with the IrDA standard using modulator-demodulator U1 and transceiver U2. The transceiver is mounted on the rear of the PCB, in front of the window at the back of the pump. The window is covered with dark IRtransparent plastic.

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3. SERVICE MENU While keeping pressed the

key turn the pump on. Enter code 751 using the numerical

keypad. Press OK to confirm the code. The Service Menu will be displayed. Use the keys to select the required parameter. 3.1.

MAINTENANCE MENU

Select the MAINTENANCE MENU from the Service menu and press the OK softkey. Use the keys to select the required parameter. Press the OK softkey: - to set DEFAULT PARAMETERS - to modify the NEXT SERVICE DATE - to view the selected LOG (event, use, key or service) - to set ALARM PITCH - to set ALERT PITCH - to view serial number Press the BACK softkey to return to Service menu. 3.2.

PROGRAM LOADING

3.2.1. Loading main program To perform a programming operation, the following is required: - A2016 Firmware Upload Utility must be installed and configured on the computer that is being used. - Either USB cable must be connected between the USB port of the computer and the USB connector in the rear of the pump. While keeping pressed the key, turn the pump on. The Loader USB message shall appear on the screen. The pump is ready for loading the program. Programming sequence: - Start A2016 Firmware Upload Utility application by clicking on the appropriate icon. - Select USB interface. - Click on Firmware - Click on Firmware

key in order to load program. key to start the programming operation.

When programming completed switch off the pump using the ON/OFF key. Having loaded new program it is necessary to set DEFAULT PARAMETERS and execute full testing (see Section 3.4.1). 3.2.2. Loading Bootstrap In order to perform a programming operation, the following should be in place: - A2016 Firmware Upload Utility should be installed and configured on the computer that is being used.

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- Having opened the pump housing, Bootstrap Loader Unit should be connected between the Main Electronic board connector JP7 and the COM port of the computer. Bootstrap Loader Unit switch should be in ON position. Switch on the pump. Press the Reset key on the Bootstrap Loader Unit. The pump is now ready to download a Bootstrap. Programming sequence: - Start A2016 Firmware Upload Utility application by clicking on the appropriate icon. - Select which COM port is going to be used. - Click on Bootloader

key in order to load Bootstrap.

- Click on Bootloader

key to start the programming operation.

After Bootstrap downloading process is completed, it is necessary to switch Bootstrap Loader Unit switch into OFF position and to press the Reset key. Having loaded new bootloader it is necessary to set DEFAULT PARAMETERS and execute full testing (see Section 3.4.1). 3.3.

MOTOR PROGRAM LOADING

To perform a programming operation, the following is required: - A2016 Firmware Upload Utility must be installed and configured on the computer that is being used. - Either USB cable must be connected between the USB port of the computer and the USB connector in the rear of the pump. Select the MOTOR PROGRAM LOADING and press the OK softkey. The MOTOR PROGRAM UPGRADE message shall appear on the screen. The pump is ready for loading the motor program. Programming sequence: - Start A2016 Firmware Upload Utility application by clicking on the appropriate icon. - Select USB interface. - Click on Motor - Click on Motor

key in order to load program. key to start the programming operation.

When programming completed switch off the pump using the ON/OFF key. Having loaded new program it is necessary to set DEFAULT PARAMETERS and execute full testing (see Section 3.4.1). 3.4.

CALIBRATION

Select the CALIBRATION from the Service menu and press the OK softkey. Select item to be calibrated using the

Aitecs 2016 Service Manual

keys and press the OK softkey.

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3.4.1. Syringe size calibration The syringe size detection system stores the characteristics of the syringe clamp assembly, including the travel of the linear potentiometer in non-volatile memory. Equipment: - Spacer (gauge) SP0 (B8640027-04); - Spacer (gauge) SP1 (B8640037-01); - Spacer (gauge) SP2 (B8640037-02); - Spacer (gauge) SP3 (B8640037-03). Select the Syringe size from calibration menu and press the OK softkey. With the syringe clamp at the lowermost position press the OK softkey. One after another insert spacers from 0 to 3, each time closing the syringe clamp and pressing the OK softkey to acknowledge. Finally fix the syringe clamp at the uppermost position and again press the OK softkey. 3.4.2. Pusher button and pusher position calibration Equipment: - Calibration spacer (gauge) SP1 (B8640037-01). Select the Pusher button & pusher position from calibration menu and press the OK softkey. Press the pusher lever if appropriate message appears. When display reads the Insert spacer SP1 and press OK message, insert the SP1 spacer and press the OK softkey. Syringe pusher shall move forward until it comes in contact with the spacer. When syringe pusher stops automatically and display reads a CONFIRM softkey, press the CONFIRM softkey. 3.4.3. Force (pressure) calibration Equipment: - Digitron pressure meter, model: 2022P (0-1500 mmHg); - 50 ml BD PLASTIPAK or 60 ml BD syringe with extension line. Screws fastening rear case to front case must be unscrewed. Select the Force sensor from calibration menu and press the OK softkey. Then follow directions on the display. When the Is pusher free? message appears, make sure that pushing surface of the retainer is not in contact with any part of pump or extraneous object. When Adjust readings... message appears check the value indicated at left bottom corner of screen and adjust it, if out of above indicated on the screen range, by means of potentiometer R30 on the Drive Unit. Upon prompt of inserting syringe, fill syringe with 10-20 ml of water, and fit it to the pump. Connect pressure meter to the syringe by means of the extension line. Locate the pressure meter at the same height as the syringe and press the OK softkey. After the pusher comes in contact with syringe plunger press the > softkey and keep it depressed, allowing the transmission to run until the pressure meter reads (120±1.5) cmHg. When approaching the target value, it is recommended to run transmission in short steps, pressing the > key momentarily. If you fail to stop movement timely and target value is overridden, calibration procedure must be repeated from the beginning. When pressure is adjusted as required, press the OK softkey. Press the BACK softkey to exit.

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NOTE. When calibrating force sensor after repairing or replacing drive or pusher, it is necessary to go through described above procedure three times, first and second time running transmission until pressure goes to 140-150 cmHg, and the last time – exactly as described. 3.4.4. Battery capacity calibration Battery capacity calibration cycles the battery through a charge, discharge, re-charge sequence during which the fuel gauge within the Battery Unit will be updated with a measurement of the current capacity of the cells. This calibration allows the fuel gauge to monitor accurately the charge in the pack. Over time the estimate of capacity may drift from the actual cell capacity, which generally decreases with time. Recalibration will update the fuel gauge with the measured capacity of the cells. Remove the battery pack lid to ensure a stable pack environment during calibration. It is recommended that the pack is removed from the battery compartment and placed behind the pump. Connect the pump without syringe to the mains. Select the Battery Capacity from calibration menu and press the OK softkey. Press START softkey in the following window. Leave pump in calibration mode for up to 20 hours. The cycle should run passing automatically three phases one by one: • • •

Initial charge phase – up to 4 hours Measured discharge phase. Pack is discharged using typical load down to 1.1 V per cell to determine how much charge is available from the pack – up to 12 hours Final charge phase. Pack is fully recharged ready for use. Early in this phase the measured discharge value is transferred to the pack gas gauge to be stored as the new capacity (mAh).

During the course of calibration the battery related information is displayed on the pump screen. At the end the CALIBRATION COMPLETED message appears. Press the BACK softkey to exit. 3.5.

TESTING

Select the TESTING from the Service menu and press the OK softkey. Select the item to be keys and press the OK softkey.

tested using the

3.5.1. Full testing This section provides a complete pump test procedure. Follow each stage test and follow the instructions on the display use the NEXT softkey to move to the other test. 3.5.2. Program testing This test is intended to calculate program and bootstrap CRC. Select the Program from testing menu and press the OK softkey. Software version, bootstrap version and calculated CRC values are indicated in the display. Press the BACK softkey to return to TESTING menu.

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3.5.3. Drive sensors test This test enables checking of the following sensors: pusher home, pusher button, grippers unlatch and syringe barrel. Select Drive Sensors from the testing menu and press the OK softkey. Home sensors can be checked moving pusher by means of the < and > soft keys and watching number of home zone indicated on screen. Zone 0 should be indicated when pusher is at the rightmost position, and zone number shall shift in order to 1, 2, and 3 when moving pusher to the left. Zone 3 indication shall appear not more than 10 mm from the rightmost position and shall be retained all the rest way to the left. Pusher sensors can be checked pressing smoothly pusher button with finger and watching number of pusher zone indicated on screen (grippers must be in open position). While pusher button is released, the zone C shall be indicated. As pressure on button increases, zone indication shall switch in order to B, and C. To check unlatch sensor, open pusher grippers and make sure that status of unlatch sensor indicated on the display is OFF. Press the UNLATCH softkey. Grippers shall close and status of unlatch sensor shall change to ON. Once complete press the BACK softkey to return to TESTING menu. 3.5.4. Syringe size test This test is enables checking the operation of syringe size sensor. Select Syringe size sensor from the testing menu and press the OK softkey. Slowly lift the syringe clamp. Check if syringe size sensor value changes (mV and mm). Having finished testing press the BACK softkey to return to TESTING menu. 3.5.5. Pusher position test This test enables checking pusher position calibration. Select Pusher position sensor from the testing menu and press the OK softkey. Insert the SP1 spacer. Press the OK softkey. Syringe pusher shall move until coming into contact with the spacer. Pusher position value of (22 ± 0.5) mm should be indicated on the display. Having finished testing press the BACK softkey to return to TESTING menu. 3.5.6. Motor test This test enables checking motor operation. During test no syringe should be installed. Select Motor from the testing menu and press the OK softkey. Keep the < softkey depressed and make sure that pusher moves to the left. Check reverse movement when > key is depressed. Having finished testing press the BACK softkey to return to TESTING menu. 3.5.7. Display test This test checks that all of the display pixels (256x64) illuminate. Select Display from testing menu and press the OK softkey. Observe “chess-board” structure fields that appear in the

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display. All the rectangles should be same shaped and evenly filled. Having finished testing press the BACK softkey to return to TESTING menu. 3.5.8. Nurse call test Equipment: - Nurse call cable (B6650034); - Ohmmeter. This test checks the nurse call circuit operation. Select Nurse call from testing menu and press the OK softkey. Using a meter check the circuit between the Nurse call contact 9 (com) and contacts 10 (NO), 8 (NC). The contacts should toggle each time the CHANGE softkey is pressed, as indicated on the display. Press the BACK softkey to return to TESTING menu. 3.5.9. Speaker/buzzer test This test checks the speaker and buzzer operation. Select Speaker/buzzer from the testing menu and press the OK softkey. Check for the alternating volume sound from the speaker. Check for the sound from the buzzer. Press the BACK softkey to return to TESTING menu. 3.5.10. Keypad test This test enables checking the keypad operation. Select Keypad from the testing menu and press the OK softkey. Press one by one all keys and make sure that after pressing any key its image on the display is highlighted. Press the BACK softkey to return to TESTING menu. NOTE. This test does not apply to the ON/OFF key. 3.5.11. LEDs test This test is intended to check the LED operation. Select LEDs from testing menu and press the OK softkey. The following LEDs should activate one after another: GREEN (INFUSION), RED (ALARM), YELLOW(ALERT) and BATTERY. In order to check the operation of BATTERY LED it is necessary to connect the power cable. In order to check the operation of MAINS LED it is necessary to remove and reconnect the power cable. Press the BACK softkey to return to TESTING menu. In order to check the operation of red backup battery LED it is necessary to remove the power supply cable from Main electronic board. 3.5.12. Watch-dog test This test enables checking of the watch-dog circuit operation. Select Watch-Dog from testing menu and press the OK softkey. Clocking of the watch-dog circuits is interrupted for certain time. This shall trigger watch-dog, which activates red alarm LED and launches the buzzer. When test completed switch off the pump using the ON/OFF key.

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4. RECOMMENDED ROUTINE MAINTENANCE AND TESTING It is recommended that routine maintenance be carried out at least once a year. This should include (see Annex A): - AC Mains / Battery operational checks (section 4.1). - General cleaning and inspection for damage (section 4.2). - Battery test (section 4.3). - Infusion rate check (section 4.4). - Occlusion pressure level check (section 4.5). - Full test (sections 3.4.1-3.4.12). 4.1.

AC MAINS / BATTERY OPERATION CHECK

Switch the pump on and plug pump into the mains. Observe that the MAINS indication LED becomes illuminated. Remover the mains supply and observe that the MAINS LED switches off. Observe that the battery indication LED becomes illuminated as the mains supply is removed. 4.2.

GENERAL CLEANING AND INSPECTION FOR DAMAGE

To ensure that this pump remains in good operating condition, it is important to keep it clean and carry out the routine procedures described below. Only a qualified service engineer, with reference to this manual, should perform servicing. The following routine maintenance procedures should be carried out as required but at least once per year: Thoroughly clean external surfaces of the pump before and after prolonged periods of storages by wiping a lint-free cloth lightly dampened with warm water and standard disinfectant/detergent solution. Disinfectants known to be corrosive to metals and plastics must not be used. Before cleaning always switch OFF and disconnect from the AC power supply. Never allow liquid to enter the casing and avoid excessive fluid build up on the pump. Do not use aggressive cleaning agents as these may damage the exterior surface of the pump. Do not steam autoclave, ethylene oxide sterilize or immerse this pump in any fluid. Check Labels should be flat and legible. Replace as required Case components must be checked for damage that may affect function, present fluid ingress routes and present a user hazard must be replaced as necessary. Check the mounting clamp is not damaged and that it functions correctly. Inspect the AC power supply inlet and cable for sings of damage.

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4.3.

BATTERY TEST

Perform battery calibration in accordance with 3.3.5. When calibration is completed and the battery is fully charged (at least 5 hours on charge) disconnect the pump from the mains. Load 50 ml BD Plastipak syringe with the plunger at 60.0 ml position on the syringe barrel scale. Set the 5.0 ml/h rate and start infusion (see the Operator’s Manual for further information on starting the pump). Normally pump should be able to work on battery for about 10 hours. If this time is significantly less battery should be replaced. After completion of the test the pump should be recharged for a minimum of 3 hours. 4.4.

Equipment: -

INFUSION RATE CHECK

stop-watch; graduated glass test-tube (one point equals to 0.1 ml, volume 60ml or more).

Take the BD Plastipak 50 ml syringe with extension set and fill it with distilled water up to point of 60ml. Program the following infusion parameters: - Rate 50 ml/h. Insert the free end of extension set into the test-tube and start the infusion. Measure infusion time with the stop-watch till the moment pump display indicates 50 ml infused and stop the infusion. Read the volume of water delivered into the test-tube. Calculate the infusion rate. It shall be 50ml/h ±1ml/h (±2%). 4.5.

Equipment: -

OCCLUSION PRESSURE LEVEL CHECK

Digitron pressure meter, model: 2022P (0-1500mmHg).

Fill the 50 ml BD Plastipak syringe with 20-30 ml of the distilled water and connect it to the pressure meter using the extension set. Switch on the pressure meter and set the max/min pressure recording mode. Set pump occlusion alarm level to L-10 and launch infusion at 5 ml/hr rate (for pump operation details refer to the Operator’s Manual). When pump will stop and indicate OCCLUSION read the maximum pressure recorded by pressure meter. Readings shall be within (73 -117) cmHg range. If recorded value is outside this range, re-calibrate the force sensor in accordance with 3.3.4 and repeat this test.

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5. TROUBLE-SHOOTING 5.1.

SAFETY WARNINGS

- Use extreme caution when pump whilst it is connected to the AC mains. Hazardous voltages are present at the mains inlet and on the power supply even the pump is switched off. - Disconnect the battery and AC power whenever removing or inserting PCBs or other connectors.

-

This pump contains static-sensitive components. Wherever the ESD symbol appears observe strict precaution for the protection of static-sensitive components when attempting to service and repair the pump. - Always visually inspect the pump, power cord and plug for damage. If the power cord or plug is damaged they should be replaced. 5.2.

PUMP HAS BEEN DROPPED OR DAMAGED

If the pump is dropped or damaged, the damaged parts should be identified and replaced before any further troubleshooting is carried out. During inspection, careful attention should be paid to the front and rear case halves, for signs of drop damage. Also check the pump drive, syringe pusher and syringe size sensor. 5.3.

PUMP HAS BEEN EXPOSED TO FLUIDS

Excessive fluid spills can lead to fluid ingress into the pump. Even if the fluid dries out, deposits can be left which cause the pump to fail. If fluid ingress is suspected the pump should be inspected internally. Clean and dry out the pump. Take care to ensure dried deposits do not remain on the PCBs or other electrical components. Replace any damaged PCBs or components.

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5.4.

TROUBLE-SHOOTING BY FAULT SYMPTOM

SYMPTOM Pump does not operate from external AC mains (MAINS LED does not operate). Pump does not operate from external 12 VDC (MAINS LED does not operate). Pump operates from the AC mains. One or more keypad key presses are not accepted. Too high or too low contrast level.

Backlight does not operate when pump is powered on.

Second (high pitch) audible alarm does not sound after power on. Grippers do not close when loading syringe.

When loading syringe, after closing grippers the Press lever prompt is displayed.

Aitecs 2016 Service Manual

CHECK Check mains cord. Check switching power supply. Check 12VDC & Nurse call connector unit.

CORRECTIVE ACTION Replace mains cord. Replace switching power supply if necessary. Replace 12VDC & Nurse call connector unit.

Perform keypad test.

Replace keypad.

Check contrast setting.

Adjust the contrast as described in Operator’s Manual. Adjust voltage by means of R27, if the problem persists – replace the Main Electronic board.

Check the voltage of the Main Electronics Board test point TP4. The value should be (-5.8±0.1)V, when contrast is set to level 6. Check backlight setting.

Adjust the backlight as described in Operator’s Manual. Check backlight circuit Replace Main Electronic interconnection on Electronic board if necessary. board. Replace Display Unit if Check the Display Unit and necessary. its connection to Electronic board connector JP2. Check buzzer (Z1) in the Replace buzzer (Z1). Main Electronic board. Check backup battery GB1 in Replace backup battery GB1. the Main Electronic board. Perform drive sensors test Replace syringe pusher if (Pusher). necessary. Check the capacitor C1 and Replace capacitor unit. its connection to Drive Unit board. Check the electromagnet Replace syringe pusher if circuit and its connection to necessary. Drive Unit board. Perform drive sensors test Replace syringe pusher if (Unlatch). necessary.

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Check syringe prompt is displayed when loading syringe.

Pusher home sensors do not work properly (screen indicates internal malfunction after switching on the pump). Syringe size sensor does not determine syringe size properly.

Occlusion pressure level incorrect.

Too short operation time on battery. Nurse Call does not operate.

USB interface does not operate.

IrDA interface does not operate (when link to AIMS 16 is enabled in user configuration menu). Mounting clamp cannot be fixed to the pump.

Aitecs 2016 Service Manual

Perform drive sensors test (Barrel). Check the syringe barrel sensor connection to Main Electronic board. Perform drive sensors test (Home). Check home sensors unit connection to Main Electronic board. Test syringe size sensor (see section 3.4.4). Check the syringe size sensor and its connection to Main Electronic board. Check occlusion pressure level (see section 4.5). Check pressure sensor connection to Drive Unit board. Check pressure sensor amplifier circuit. Test battery (see section 4.3). Perform Nurse Call test. Check nurse call circuit interconnection on Power Supply unit. Check USB connector unit. Check USB cable. Check USB circuits on Main Electronic board. Check the connection of IrDA unit to Main Electronic board. Check IrDA circuits. Check mounting clamp.

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Replace syringe barrel sensor if necessary.

Replace pusher home sensor unit if necessary.

Calibrate syringe size sensor (see section 3.3.1). Replace syringe size sensor if necessary. Calibrate pressure sensor (see section 3.3.4). Replace syringe pusher if necessary. Replace Drive Unit board if necessary. Replace battery unit if necessary. Replace 12VDC & Nurse call connector unit. Replace Power Supply unit if necessary. Replace USB connector unit. Replace USB cable. Replace Main Electronic board if necessary. Replace IrDA unit if necessary.

Replace mounting clamp.

5.5.

CODE AB01

BAR01 BP00

BP01

BT00

BT02 BT03

BT04

BT05

BT06

BT07

BVXX

EE00

FL01

TROUBLE-SHOOTING BY FAILURE CODES

DESCRIPTION During antibolus motor has exceeded the step count limit.

CORRECTIVE ACTION Power off then on. If failure code recurs, replace drive unit board software. If the problem persists, replace drive unit board if necessary. Barrel sensor is damaged. Check barrel sensor and replace it if necessary. Corrupted configuration parameters. Set default parameters in Service menu/Maintenance menu. If failure code recurs, replace Main electronic board if necessary. Configuration parameters out of limits. Set default parameters in Service menu/Maintenance menu. If failure code recurs, replace Main electronic board if necessary. Communications with the battery fuel gauge Inspect cables between Battery unit, has failed. Power supply unit and Main Electronic board. The battery cell voltage is low (less than Charge battery, if failure code recurs, 1.05V per cell). replace Battery Unit if necessary. The battery cell voltage is high (greater than Check battery charge circuit and 1.75V per cell). replace power supply unit if necessary. The battery temperature is high (greater than Check battery charge circuit and replace power supply unit if 60°C). necessary. The battery charging current is high (greater Check battery charge circuit and than 1.5A). replace power supply unit if necessary. The battery discharging current is high Disconnect one by one all the (greater than 1.5A). connectors, find current leakage place and replace faulty unit. The battery is discharging whilst the pump is Inspect cables between battery on the mains. Monitoring and Power Supply Unit. Check battery charge circuit and replace Power Supply Unit if necessary. Bad variable Power off then on. If failure code recurs, replace MEB software or Main electronic board if necessary. Cannot read/write data from/to external Power off then on. If failure code EEPROM recurs, replace Main electronic board if necessary. Internal Flash timout Power off then on. If failure code recurs, replace Main electronic board if necessary.

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CODE FL03

DESCRIPTION Internal Flash trap

HT01

External NMI activated

HT02

Stack overflow

HT03

Stack upperflow

HT04

Internal microcontroller trap activated (Class B)

KY01 LOG1

Keypad key has been depressed for 5 minutes. Key log has failed

LOG2

Error log has failed

LOG3

Event log has failed

OS01

Operating system timeout

OTHXX

Other failures

PP01

Pusher position readings out of range for the inserted syringe.

PP02

Pusher home sensor failure

PP03

Pusher home sensor failure

PR01

Incorrect MEB soft Bootstrap CRC

PR02

Incorrect MEB program CRC

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CORRECTIVE ACTION Power off then on. If failure code recurs, replace Main electronic board if necessary. Power off then on. If failure code recurs, replace MEB software if necessary. Power off then on. If failure code recurs, replace MEB software if necessary. Power off then on. If failure code recurs, replace MEB software if necessary. Power off then on. If failure code recurs, replace MEB software if necessary. Replace keypad if necessary. Power off then on. If failure code recurs, replace Main electronic board if necessary. Power off then on. If failure code recurs, replace Main electronic board if necessary. Power off then on. If failure code recurs, replace Main electronic board if necessary. Power off then on. If failure code recurs, replace MEB software if necessary. Check log, if necessary replaces MEB software. Calibrate pusher home and syringe size sensors. If the problem persists, check and replace pusher home sensor or syringe size sensor if necessary. Check and replace pusher home sensor if necessary. Check and replace pusher home sensor if necessary. Power off then on. If failure code recurs, replace MEB Bootstrap software if necessary. Power off then on. If failure code recurs, replace MEB software if necessary.

CODE PR03

DESCRIPTION Program task dead (A certain program task not responding)

PR04

Incorrect motor soft Bootstrap CRC

PR05

Incorrect motor program CRC

RT01

RT03 SA00

Accuracy of the Drive unit microcontroller quartz clock or Main electronic board microcontroller quartz clock is out of spec. (±1%). Incorrect date and time settings. Bad MCU (jumps)

SAXX

Safety failures

SC01

Interrupted speaker circuit.

SC02

Shorted speaker circuit.

SF01

Syringe force sensor reading out of range.

SF02

Syringe force test reading out of range.

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CORRECTIVE ACTION Power off then on. If failure code recurs, replace MEB software if necessary. . Power off then on. If failure code recurs, replace drive unit board Bootstrap software. Power off then on. If failure code recurs, replace drive unit board software. Replace Drive unit board if necessary. Replace Main electronic board if necessary. Set date and time. Power off then on. If failure code recurs, replace Main electronic board if necessary. Power off then on. If failure code recurs, replace Main electronic board if necessary. Check speaker unit and replace it if necessary. Check speaker drive circuit and replace Main Electronic board if necessary. Check speaker unit and replace it if necessary. Check speaker drive circuit and replace Main Electronic board if necessary. Calibrate syringe force sensor. If the problem persists: Check syringe force sensor and replace drive with syringe force sensor if necessary. Check syringe force sensor amplifier circuit and replace Drive Unit board if necessary. Calibrate syringe force sensor. If the problem persists: Check syringe force sensor and replace drive with syringe force sensor if necessary. Check syringe force sensor amplifier circuit and replace Drive Unit board if necessary.

CODE SF03

DESCRIPTION Syringe force reference reading out of range.

SF04 SF06

Incorrect CRC of the force (pressure) table Syringe force reference voltage drift

SM01

Motor software error

SM02

Wrong direction of motor rotation

SM03

Motor rotation speed is too high (comparing period of motor steps with encoder signal period)

SM04

Motor rotation speed is too low (comparing period of motor steps with encoder signal period)

SM06

Motor no (bad) connection

SM07

Motor timeout

SM08

Motor bad position

SM09

Bad communication protocol number

SM10

Rate checking algorithm does not work

Aitecs 2016 Service Manual

21

CORRECTIVE ACTION Calibrate syringe force sensor. If the problem persists: Check syringe force sensor and replace drive with syringe force sensor if necessary. Check syringe force sensor amplifier circuit and replace Drive Unit board if necessary. Calibrate syringe force sensor. Calibrate syringe force sensor. If the problem persists: Check syringe force sensor Uref and replace Drive Unit board if necessary. Power off then on. If failure code recurs, replace software or drive unit board if necessary. Replace Encoder unit if necessary. Check Drive Unit board and replace it if necessary. Check Encoder Unit and replace it if necessary. Check Drive Unit board and replace it if necessary. Check Encoder Unit and replace it if necessary. Check Drive Unit board and replace it if necessary. Check motor unit and replace it if necessary. Inspect cables between Drive unit and Main Electronic board. Replace Drive unit board if necessary. Inspect cables between Drive unit and Main Electronic board. Replace Main electronic board if necessary. Check Encoder Unit and replace it if necessary. Check Drive Unit board and replace it if necessary. Check Main electronic board and replace it if necessary. Power off then on. If failure code recurs, replace motor software if necessary. Power off then on. If failure code recurs, replace motor software and main software if necessary. Check Encoder Unit and replace it if necessary.