9 Repair Procedure
M1207026
9-11
9.6 Service the cylinder supply modules
WARNING
Be careful not to expose internal components to grease or
oil (except Krytox or equivalent).
9.6.1 Tightening
procedure for high-
pressure tube fittings
The cylinder pressure gauge is connected to the cylinder supply
through a copper tube with fittings at both ends. Use the following
tightening procedure whenever you are replacing a cylinder supply or
a cylinder pressure gauge.
1.
Insert the tubing into the fitting until the ferrule seats in the fitting.
2.
Tighten the nut by hand.
3.
Continue tightening the nut with a wrench until it reaches the
original position (about 1/4 turn). You will feel an increase in
resistance at the original position.
4.
After reaching the original position, tighten the nut just slightly.
Note
If you are installing a new tube that has not been tightened before,
tighten the nut with a wrench an additional 3/4 of a turn after the nut is
finger tight.
9.6.2 Replace
cylinder regulator
module (complete
replacement)
1.
Bleed all gas pressure from the machine (Section 9.1).
2.
Ensure that all cylinder and pipeline gauges read zero before
proceeding.
3.
Remove the rear upper panel (Section 9.2).
4.
Disconnect the high-pressure cylinder gauge fitting.
5.
Disconnect the output tube fitting.
6.
Remove the three mounting screws and lock washers.
7.
To reassemble, perform the previous steps in reverse order.
•
Tighten the high-pressure fitting as detailed in Section 9.6.1.
•
Pull on the cylinder output fitting to ensure it is locked in
place.
8.
Check the output of the regulator BEFORE you install the rear
upper panel. Adjust if necessary (Section 5.1).
9.
Perform the checkout procedure (Section 3).
9.6.3 Replace
cylinder inlet filter
1.
Open the cylinder yokes.
2.
Remove the inlet adapter from the cylinder yoke, using a 4 mm
hex wrench.
Note:
A brass retaining ring keeps the filter inside the inlet
adapter.
3.
Thread a 6-mm screw (two turns only) into the brass retaining
ring and pull it out.
M1207027
004
MANUAL−DOC, Technical Reference Manual, Technical Reference Manual for 9100c, English−default
Reproduced from the electronic master in MATRIX
