Operation in Freezing Weather. (Continued)
(20) If using the SHOWER mode, adjust the BURNER FUEL VALVE to maintain a
temperature of 38 to 42°C (100 to 107%) so that the burner
will not automatically shut off.
(21) Check all hoses and connections for leaks.
Shutdown in Freezing Weather.
If ambient temperature falls below 32% while
and you cannot terminate operations, take the
performing a mission
Don cold wet weather clothing IAW page 2-40.
If clothing (including hand gear) gets wet in cold environments,
the operator should immediately change from wet clothing to dry
protective clothing. If this is not done, cold injury will occur.
Avoid contact with water as much as possible; stand upwind, if pos-
sible, of water spray; use caution when connecting/disconnecting
fittings; use caution when adjusting control panel.
The equipment should be placed on a level surface with prevision
for water runoff.
The operating area for the pump unit must re-
main as dry as possible.
In cold weather, three operators are needed per system to prevent
system freezeups and operator injury. The third operator will
assist the other two operators to ensure the necessary operating
steps are conducted in a timely manner.
Extreme caution should be used when wearing loose clothing to pre-
vent contact with moving parts (belts, pulleys, etc).
Shutdown under freezing conditions will required the operator and
assistants to perform rapidly to prevent equipment freeze-up.
Before performing any of the following procedures,
prepare at least
25 gal. of antifreeze solution by mixing 15 gal. of antifreeze with
10 gal. of water.
(1) Turn THERMOSTAT SELECTOR switch to OFF position.
(2) Turn BURNER FUEL VALVE fully clockwise.
(3) Allow outlet water temperature to cool to 40°C.