REPLACEMENT PROCEDURES
5-10
Manual 0-2972
5.08 Right Side Internal Parts
Replacement
Refer to Section 6.07 Right Side Internal Parts List and
overall detailed drawing.
WARNING
Disconnect primary power from the source before
opening or disassembling the power supply.
A. Pressure Switch/Solenoid Assembly (PS1/
SOL1) Replacement
The Pressure Switch and Solenoid Valve are one Assembly.
1.
Remove the cover per Subsection 5.04-A.
2.
Disconnect:
a. Wires #9 and #10 from the Pressure Switch As-
sembly.
b. Wires #7 and #8 from the Solenoid Assembly.
3.
Use a tool (screwdriver, etc.) to push the clip on the
front of the Fan Shroud to the left. Release the Sole-
noid Assembly. Dislodge the Solenoid from under-
neath the clip on the top of the Fan Shroud.
Heatsink
Shroud
Dislodge Solenoid
Assembly
Push Clip
to the left to
release Solenoid
Assembly
Art # A-03705
2
3
1
4.
Release the hose from the Adapter Fitting on the
left side of the Solenoid Assembly. Hold a wrench
or similar tool against the locking ring on the Fit-
ting, then pull on the hose to release it.
5.
Release the hose from the Adapter Fitting on the
right side of the Pressure Switch.
6.
Install the replacement Pressure Switch/Solenoid
Assembly by reversing the above steps. Once in-
stalled, the Solenoid Assembly should fit securely
under the Fan Shroud and should not be move-
able.
7.
Reinstall the power supply cover.
B. Fan (M1) Replacement
1.
Remove the cover per Subsection 5.04-A.
2.
Remove the two screws securing the Fan to the Fan
Shroud and let the Fan drop down.
3.
Turn the Fan slightly and slide the Fan out, left side
first.
4.
Carefully remove the two wiring connectors from
the terminals on the Fan Assembly.
5.
Install the replacement Fan Assembly as follows:
a. Position Fan with the label facing inward and
the Fan terminals
facing bottom right.
b. Connect the two wire connectors to the two Fan
terminals.
c. Slide the right end of the Fan in through the
Shroud first, then the left.
NOTE
Only two screws are needed to attach the Fan to the
Shroud and they can be installed in any two holes
provided they are opposite each other. For ground-
ing purposes, one of those screws must be installed
with a star washer.
d. Line up the Fan holes with the screw holes in
the Fan Shroud then attach the Fan by install-
ing two screws in opposite corners.
