TM 10--3510--221--24
0191 00--1
AIR INLET PRESSURE SWITCH REPLACEMENT
0191 00
THIS WORK PACKAGE COVERS:
Removal, Installation
INITIAL SETUP:
Maintenance Level
Materials/Parts
Unit
Tags (Item 9, WP 0271 00)
Tape, Anti--Seizing (Item 10, WP 0271 00)
Tools and Special Tools
Equipment Conditions
Tool Kit, General Mechanics (Item 1, WP 0272 00)
LADS power shut off at main control
enclosure (WP 0112 00).
REMOVAL
WARNING
Thermal fluid can reach temperatures near 400o F when the heating system is operating.
Allow thermal fluid and heating system piping to cool prior to performing maintenance.
Always wear gloves and eye protection. Failure to follow this precaution could result in
severe burn injuries.
1. Loosen four latches (1), then open door (2) on heater enclosure (3).
2. Remove screw (4), then remove cover (5) from pressure switch (6).
3. Tag and disconnect wires from pressure switch (6).
4. Disconnect tubes (7 and 8) at elbows (9 and 10).
5. Unthread pressure switch (6) from sub--panel (11).
6. Remove elbows (9 and 10) from pressure switch.
7. Clean anti--seizing tape from threads of elbows (9 and 10).
