Instructions
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INSTRUCTIONS Replacement Procedure for Packing (O-Ring) of the Cylinder hose (PIN) for UHI-3 (MAJ-1080) and Cylinder hose with switch-over valve (Pin-index) (MAJ-1985) If the packing (O-ring) of the aforementioned product is scratched, cracked, or missing replace it with a new O-ring as described in the following procedure. Handle
Packing (O-ring) Yoke
O-ring lock nut
Packing (O-ring) replacement procedure Preparation Order an Olympus O-ring GT8450 for MAJ-1080 or MAJ-1985. Use the following tools*1 to replace the packing. *1 Not offered by Olympus. • Wrench (6 mm) • Tweezers (without sharp tips)
CAUTION • Be sure to use the packing (O-ring) designated by Olympus. Use of a non-designated packing (O-ring) could lead to a gas leak. • Do not use tweezers for attaching a new packing (O-ring). Otherwise, the packing (O-ring) may be damaged, which could lead to a gas leak. • Be sure to use the designated wrench for attaching or detaching the O-ring lock nut. Otherwise, the O-ring lock nut may be damaged.
1 Disconnect the high-pressure hose from the CO2 cylinder and high flow insufflation unit or endoscopic CO2 regulation unit.
CAUTION When disconnecting the high-pressure hose, be sure to close the CO2 cylinder valve and exhaust CO2 remaining in the instrument. Otherwise, a large amount of gas will jet out of the instrument. When disconnecting the high-pressure hose from the CO2 gas inlet and CO2 cylinder, ensure that the CO2 cylinder valve is closed, then release any residual CO2 remaining inside the instrument.
2 Remove the handle from the yoke by turning the handle counterclockwise.
Figure 1
3 Using the wrench (6 mm), remove the O-ring lock nut from the yoke by turning the O-ring lock nut counterclockwise.
Figure 2
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4 Using the tweezers, remove the old packing (O-ring) from the yoke. 5 Inspect the new packing (O-ring) for any damages (e.g.cracks, scratches). If no damage is detected, place a new packing (O-ring) onto the yoke.
6 Using your finger, place the packing (O-ring) and make sure that it is fit in the groove. Groove
Figure 3
7 Using the wrench (6mm), tighten the O-ring lock nut (with a force of about 2 N-m (reference), for example).
Figure 4
NOTE If the O-ring lock nut is damaged or deformed, please purchase a new O-ring lock nut (GT8451) of the model designated by Olympus.
8 Attach the handle on the yoke by turning the handle clockwise.
Figure 5
9 Inspect that the packing (O-ring) has no scratches or cracks. 10 Check the connection of the CO2 cylinder by following the description on the inspection page in the instruction manual of the high flow insufflation unit or endoscopic CO2 regulation unit. Should a gas leak be suspected, disconnect the high-pressure hose and re-attach the packing (O-ring). If a gas leak still occurs, do not use the equipment and contact Olympus.
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Date of Issue 2021-12-08
RA0628 03
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