ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0056 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
AIR COMPRESSOR
High Pressure Air System Bleed Down Procedures:
WARNING
The TWPS must be in Shutdown and the TQG and TWPS main breaker must be off
(Army) or the TWPS disconnected from its power source (Marine Corps) prior to
performing maintenance on the TWPS Air Compressor. Failure to observe this
warning can result in injury to personnel and damage to equipment.
High pressure. The air system contains air pressure up to 1800 psig. The high
pressure air system must be bled prior to performing maintenance on some of the
components of the air compressor. Failure to observe this warning can result in
injury to personnel and damage to equipment.
Bleed the high-pressure air system as follows:
1. Make sure TWPS is in Standby Shutdown without Draining Down (WP 0017).
2. Bleed the high pressure air system as follows (see Figure 5 for valve location):
a. Switch the Air Compressor control at the OCP to OFF.
b. Slowly open High Pressure Air Vent Valve V-904 to bleed the air from the high-pressure
system. Then close the valve.
AIR RECEIVER TANK
SHUT-OFF VALVE V-907
HIGH PRESSURE AIR
VENT VALVE V-904
Figure 5. Valves for Bleeding the High Pressure Air System.
0056 00-7
