MAJ-1985 and 1986 CYLINDER HOSE with SWITCH OVER VALVE Instructions.pdf
CYLINDER HOSE WITH SWITCH OVER VALVE
1 Intended Use
This instrument is intended to be used for supply of CO2 from each one of two CO2 cylinders connected to an Olympus
designated high-flow insufflation unit or endoscopic CO2 regulation unit.
2 Instruction Manual
This instruction manual contains essential information on using this device safely and effectively. Before use,
thoroughly review this manual and the manuals of all equipment that will be used during the procedure and use the
equipment as instructed. Keep this and all related instruction manuals in a safe, accessible location. If you have any
questions or comments about any information in this manual, please contact Olympus.
3 Instrument Compatibility
Be sure to use this instrument in combination with the equipment listed below.
Using incompatible equipment can result in patient injury and/or equipment damage.
HIGH FLOW INSUFFLATION UNIT UHI-3/UHI-E1/UHI-4
ENDOSCOPIC CO2 REGULATION UNIT UCR
MOBILE WORKSTATION WM-NP2/WM-DP2
4 Signal Words
The following signal words are used throughout this manual:
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It
may also be used to alert against unsafe practices or potential equipment damage.
Indicates additional helpful information.
This product may not be available in some areas.
5 Checking the Package Contents
Match all items in the package with the components shown below. Inspect each item for damage. If the instrument is
damaged, a component is missing, or you have any questions, do not use the instrument; immediately contact
M6 T-nut (5 pcs)
CYLINDER HOSE WITH SWITCH OVER
VALVE (PIN) (MAJ-1985)
CYLINDER HOSE WITH SWITCH OVER
VALVE (DIN) (MAJ-1986)
Crinkle washer (5 pcs)
Plain washer (5 pcs)
30 mm wrench
M6 Screw (5 pcs)
19 mm wrench
(for European market only)
When the accessories of the cylinder hose with switch over valve (MAJ-1985/MAJ-1986) fail or malfunction
break, contact Olympus to purchase a replacement.
6 Nomenclature and Functions, Labels, and Symbols
Safety related labels and symbols are attached at the locations shown below. If labels or symbols are missing or
illegible, contact Olympus.
MAJ-1985, MAJ-1986 main unit
Use the provided wrench to connect the connector to the gas supply plug on the rear panel of the insufflation
The yoke connects the cylinder hose to the gas cylinder.
The index corresponds to the index printed on the tag of the yoke. Use it for a reference when switching gas
The valve switches between gas cylinders.
7 Installation and Connection
If you can hear gas leaking noisily even when the equipment is connected correctly, then the equipment is
malfunctioning. Stop using it immediately, and contact your nearest Olympus service center or sales
Place the CO2 cylinders vertically and clamp them with the cylinder holders to prevent them from tipping over.
If the gas cylinders are placed horizontally, CO2 will flow into the equipment and freeze the feeding channels,
which may make correct insufflation of CO2 impossible.
Be sure to use medical CO2 cylinders (PIN-Index plug ISO 407 for MAJ-1985, DIN-Index plug 477
Ansch1.No.6 for MAJ-1986).
Always use a CO2 cylinder that can supply the gas at up to 16.2 MPa. Otherwise, this device may fail.
Olympus is not liable for any injury or damage due to improper cylinder connection.
Use gas cylinders with an outer diameter of 102 mm or less and a height of 640 mm or less. Gas cylinders
with larger dimensions cannot be used because they will interfere with the mounting position of this product.
This product can be mounted only on a flat surface on the side of a workstation hoop. Do not mount it on the
curved surface near the top of the hoop. Also make sure the mounting position does not interfere with the
installed gas cylinders.
1. Place the workstation in a stable place with its casters locked. Attach the optional double CO2 cylinder holders
(MAJ-1653) in accordance with the instruction manual. Install the CO2 cylinders filled with medical CO2 — one for
2. Fit the T-nuts into the grooves on the side of the workstation (see Figure 1). Fit two T-nuts in the front side and rear
side of each groove — four T-nuts in total. This product can be mounted on both right side and left side of the
workstation, but mounted only on the side of the cylinder holders attached.
Grooves on the side of the workstation
Insert the T-nut with the spring ball facing the inner side of groove while holding it at a 45 angle. Use an Allen
wrench to push it into the position shown in the top views of Figure 2.
Grooves on the side of the workstation
3. While positioning it with the screw hole of the high-pressure hose with switching valve, slide the T-nut until a
suitable position is reached. Use the provided screws and washers to attach it to the side of the workstation by
fixing the screws into 4 positions (see Figure 3). Use the provided wrench to tighten the screws. After attaching,
confirm that everything is secure and there is no instability.
4. Inspect the cylinder hose for damage, cracks and other irregularities. Connect the connector of the high-pressure
hose with switching valve to the high-pressure hose connection plug on the rear panel of the high-flow insufflation
unit (UHI-3/UHI-E/UHI-4) or endoscopic CO2 insufflation unit (UCR). Use the provided wrench to tighten the
connector clockwise firmly with a force of 24.5 N·m (2.5 kgf/m) (see Figure 4).
5. Connect the two yokes (A and B) — one with a switching valve and one for a high-pressure hose — to the gas
cylinders. When connecting the yokes, fit them in the valves of the gas cylinders by using the pins as guides and
tighten the handle clockwise firmly (see Figure 6).
Turn the handle
When using the MAJ-1986, use the supplied wrench to attach the cylinder hose's adapter to a gas cylinder filled
6. When connecting the high-pressure hose to the workstation, use the provided clamping hook. Fit the T-nuts in the
grooves on the inner surface of the side of the workstation. Then use the provided screws and washers to secure
the high-pressure hose by holding it with the clamping hook (see Figure 7).
High pressure hose
Before each procedure, inspect this device as instructed below. Inspect other equipment to be used with this device as
instructed in the respective instruction manuals. Should any irregularity be observed, do not use the foot device and
contact Olympus. If this device with an observed irregularity is used, personal injury or equipment damage may result.
1. Confirm that there is no scratch or crack on the hose.
2. Confirm that there is no loose connecting part of the hose.
3. Confirm that there is no scratch or crack on the packing inside the yoke (see Figure 8)
When removing the hose from the gas cylinders and insufflation unit, be sure to close the taps on the gas
cylinders and discharge any residual CO2 via the insufflation unit before removal. If the hose is removed
without sufficient depletion of gas, a large amount of gas will be discharged vigorously, which will cause
When turning the valve, turn it firmly as far as it can go.
1. Turn the valve so that it points at the letter indicating the gas cylinder you want to use (see Figure 9).
The letter pointed at by the signpost corresponds to the letter printed on the yoke’s tag. (In the case of the
figure below, the cylinder tagged with A will supply gas.)
The letter pointed
at by the signpost
2. Confirm that the equipment is correctly installed and connected.
3. Open the tap on the gas cylinder that is going to be used.
4. When the residual quantity of gas in the cylinder in use is low, switch to the other gas cylinder. To switch gas
cylinders, first close the tap on the gas cylinder in use and then turn the valve to switch the index. Then open the
tap on the gas cylinder that you’re going to use.
5. After use, close the tap on the gas cylinder.
10 Care, Storage, and Disposal
To prevent infection and to protect the skin, be sure to wear waterproof, chemical-resistant gloves.
Olympus is not liable for any injury or damage which occurs as a result of repairs attempted by non-Olympus
Never immerse the equipment in water or subject it to washing, disinfectant immersion, or autoclaving.
Do not clean with a coarse cloth as this may scratch the surface.
After cleaning the equipment, thoroughly dry it before use.
When using a disinfectant, check with the disinfectant manufacturer to confirm that it is effective against the
1. If blood or mucus from the patient adheres to the instrument, wipe it off with gauze moistened with a neutral
detergent and then disinfect it with another piece of gauze moistened with ethanol.
2. Wipe off dust, dirt, and other particles on the exterior of the instrument with a soft, dry cloth and then disinfect it
with a piece of gauze moistened with ethanol.
3. Always dry the instrument thoroughly.
Do not store the equipment in the shipping box, as this can present an infection control risk.
Store the equipment in a place that is free from high temperature, high humidity, and water splashes and that
is not exposed to direct sunlight.
Do not apply force such as forcible bending, stretching, twisting, and crushing.
Attach a contamination prevention cap and plug to avoid any intrusion of dirt in the hose.
After cleaning the hose, dry it well and store it in a clean, dry place.
When disposing of this device, follow all applicable national and local laws and guidelines.
Transportation and storage
–25 to +70C
10 – 90%
700 – 1060 hPa
10 – 40C
30 – 85%
700 – 1060 hPa
1060 (W) × 60 (H) × 195 (D) mm
Nominal inlet pressure
0 – 16.2 MPa
PIN-Index ISO 407
DIN-Index 477 Ansch1.No.6
Medical Devices Directive
This device complies with the requirements of Directive
93/42/EEC concerning medical devices.
Classification: Class II a
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