TM-9-6920-430-14

COOLANT RECHARGING UNIT, TRAINING GUIDED MISSILE SYSTEM M80 AND CHARGER, BATTERY PP-7309/T

TECHNICAL MANUAL; OPERATOR’S AND ORGANIZATIONAL DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL

AUGUST 1980

TM-9-6920-430-14 - Page 117 of 180

TM 9-6920-430-14

Table 3-3.

GPU Troubleshooting Guidance Chart (Continued)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

4. INLET AND OUTLET GAGES DO NOT READ THE SAME

(± 200 PSIG) FOLLOWING INSTALLATION OF NEW

ARGON GAS BOTTLE.

IS ARGON GAS SUPPLY VALVE FULLY OPEN?

IF NOT, OPEN GAS SUPPLY VALVE.

IS GAS PRESSURE EQUALIZED?

MOMENTARILY PRESS THE ON PUSHBUTTON AND THEN OFF PUSHBUTTON ON

FRONT PANEL. THE OUTLET PRESSURE GAGE SHOULD READ THE SAME AS THE

INLET PRESSURE GAGE. IF PRESSURE DOES NOT EQUALIZE DURING INITIAL

ON/OFF CYCLE, REPEAT ON–OFF RECYCLING.

ARE DESICCANT CHAMBERS (5) CLEAR?

REPLACE THE TWO DESICCANT CARTRIDGES IN ACCORDANCE WITH PARA 3-16

(PAGE 3-69).

IS INLET OR OUTLET GAGE OUT OF ADJUSTMENT?

PERFORM PROOF TEST PROCEDURE IN ACCORDANCE WITH PARA. 3-7

THROUGH 3-9.

Change 1

3-57