MAJ-1985 and 1986 CYLINDER HOSE with SWITCH OVER VALVE Instructions

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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

Olympus.

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)

Clamping hook

Plain washer (5 pcs)

30 mm wrench

Instruction manual

M6 Screw (5 pcs)

Allen key

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

Name plate

2. Yoke

1. Connector

Side view

3. Index

4. Valve

Serial number

3. Index

Name plate

1. Connector

Use the provided wrench to connect the connector to the gas supply plug on the rear panel of the insufflation

unit.

2. Yoke

The yoke connects the cylinder hose to the gas cylinder.

3. Index

The index corresponds to the index printed on the tag of the yoke. Use it for a reference when switching gas

cylinders.

4. Valve

The valve switches between gas cylinders.

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 Name plate

Caution mark

CE marking

Model number

MAJ-1985 or

MAJ-1986

Index

Front

Back

7 Installation and Connection

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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

representative.

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

each holder.

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.

T-nut

Grooves on the side of the workstation

Figure 1

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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

Spring ball

T-nut

Figure 2

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.

M6 screw

Plain washer

Crinkle washer

Figure 3

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).

Wrench

Cylinder hose

Figure 4

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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).

Valve

Handle

Yoke

Turn the handle

clockwise.

Pin

Figure 5

Figure 6

When using the MAJ-1986, use the supplied wrench to attach the cylinder hose's adapter to a gas cylinder filled

with CO2.

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

Clamping hook

Crinkle washer

Plain washer

M6 screw

Figure 7

8 Inspection

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)

Packing

Figure 8

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9 Operation

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

danger.

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.)

Signpost

The letter pointed

at by the signpost

Signpost

Valve

Valve

Figure 9

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

10.1 Care

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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

personnel.

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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

intended microorganisms.

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.

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10.2 Storage

Do not store the equipment in the shipping box, as this can present an infection control risk.

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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.

10.3 Disposal

When disposing of this device, follow all applicable national and local laws and guidelines.

11 Specifications

Transportation and storage

environment

Operating environment

Size

Ambient temperature

–25 to +70C

Relative humidity

10 – 90%

Atmospheric pressure

700 – 1060 hPa

Ambient temperature

10 – 40C

Relative humidity

30 – 85%

Atmospheric pressure

700 – 1060 hPa

Dimensions

1060 (W) × 60 (H) × 195 (D) mm

Hose length

Equipment side

1000 mm

Cylinder side

600 mm

MAJ-1985

2.5 kg

MAJ-1986

2.0 kg

Weight

Nominal inlet pressure

Compatible cylinder

connector

0 – 16.2 MPa

MAJ-1985

PIN-Index ISO 407

MAJ-1986

DIN-Index 477 Ansch1.No.6

Compatible workstations

WM-NP2/WM-DP2

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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Manufactured by

2951 Ishikawa-cho, Hachioji-shi, Tokyo 192-8507, Japan

Fax: (042)646-2429 Telephone: (042)642-2111

Distributed by

(Premises/Goods delivery) Wendenstrasse 14-18, 20097 Hamburg, Germany

(Letters) Postfach 10 49 08, 20034 Hamburg, Germany

Fax: (040)23773-4656 Telephone: (040)23773-0

KeyMed House, Stock Road, Southend-on-Sea, Essex SS2 5QH, United Kingdom

Fax: (01702)465677 Telephone: (01702)616333

3500 Corporate Parkway, P.O. Box 610, Center Valley, PA 18034-0610, U.S.A.

Fax: (484)896-7128 Telephone: (484)896-5000

5301 Blue Lagoon Drive, Suite 290 Miami, FL 33126-2097, U.S.A.

Fax: (305)261-4421 Telephone: (305)266-2332

117071, Moscow, Malaya Kaluzhskaya 19, bld. 1, fl.2, Russia

Fax: (095)958-2277 Telephone: (095)958-2245

Olympus-Tower, 114-9 Samseong-Dong, Gangnam-Gu, Seoul 135-090 Korea

Fax: (02)6255-3494 Telephone: (02)6255-3210

A8F, Ping An International Financial Center, No. 1-3, Xinyuan South Road,

Chaoyang District, Beijing, 100027 P.R.C.

Fax: (86)10-5976-1299 Telephone: (86)10-5819-9000

491B, River Valley Road #12-01/04, Valley Point Office Tower, Singapore 248373

Fax: 6834-2438 Telephone: 6834-0010

31 Gilby Road, Mount Waverley, VIC., 3149, Australia

Fax: (03)9543-1350 Telephone: (03)9265-5400

GT8126 02

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