2-65. HIGH PRESSURE SWITCH MAINTENANCE.
This task consists of:
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
Tape, Anti-seize (Appendix C, Section II, Item 30)
Lockwasher (2) - MS35338-139
ROWPU shutdown (TM 10-4610-240-10).
Power shutdown (power source manual).
ROWPU piping drained (TM 10-4610-240-10).
General Safety Instructions
High voltage can cause burns and electrical shock.
Electrical power must be off before
replacing electrical components.
ROWPU piping and equipment can contain extremely high pressure during the after operation.
If this pressure is not relieved before working on these pipes or equipment, serious injury or
death may occur. Be sure to open all drains and vents before beginning any disassembly.
a. Remove four screws (4), starwashers (3), cover (2) and gasket (1).
Tag wires before removal.
b. Remove three screws (5) and wire lugs (8).
c. Loosen sealing grip (11) and pull cable assembly wiring from high-pressure switch (13).
d. Disconnect pressure tube (6) from adapter (7).
e. Remove two nuts (16), lockwashers (15), flat washers (14), screws (10) and high-pressure switch (13) from control
f. Remove two adapters (7 and 12) from high-pressure switch (13).