Operation Under Unusual Conditions (Cont)
2-134. OPERATION IN COLD ENVIRONMENT, -25F TO 32F (-32C TO 0C)
Perform step (6) only if steps (3) through (5) have been
completed and pumping operations will be delayed, and, if
mission exceeds a period of 10 minutes. Opening of
TANK FILL and RE-CIRCULATING LINE valve control
at pump operators panel will re-circulate water to help
prevent from freezing.
Partially open TANK FILL and RE-CIRCULATING LINE valve
control (6). Indicator light (7) will come on for pump operators panel.
Put PUMP COOLER switch (8) to ON position. Indicator
light (9) will come on for cab instrument panel.