TM 55-4920-231-14
Section IV. OPERATION UNDER UNUSUAL CONDITIONS
and 19) turned to open valves before starting
46. GENERAL.
tests.
This section contains special operating instruc-
tions which are necessary for the proper func-
tioning of the tester under unusual conditions.
CAUTION
Contamination in the pneumatic or lu-
bricating systems will- damage the in-
The tester is designed to operate in tempera-
tures from 40F. to 160F (40C. to 71C.).
struments controls and the pump.
When operating in normal or extreme high tem-
a. When operating the tester in extreme con-
peratures to 160F, use the high temperature oil
ditions of snow, ice, rain, mud, dust, salt air, or
in the reservoir for lubricating the pump. For
similar conditions, do everything possible to pre-
extreme low temperature operating range (from
vent foreign material from entering the pneu-
+32F. to -40F), use the low temperature oil
matic or lubricating systems.
and operate the pump for at least 5 minutes with
b. After operation in extreme conditions, thor-
both selector valve knobs (10 and 20, figure 7)
oughly clean and dry the tester and accessories.
in the OFF position and the knobs (11, 12, 17,
