TM 55-2090-201-14&P
2-4. OPERATING UNDER USUAL CONDITIONS (Continued).
TO START (Continued).
D.
Change the filter elements
in the first (prefilter),
second, or third stage
separators when a pressure
differential of 30 psid
(2109.2 gm sq cm) is ob-
served.
Refer to paragraph
3-38, Replacement of filter
elements.
NOTE
An adjustable pres-
sure relief valve
set at 45 psig
(3163.8 gm sq cm)
is provided at the
outlet from the pump
to protect the system
from overpressure
caused by clogged
filters, valve mal-
function, or other
causes.
Refer to
paragraph 3-32, Ad-
justment of Pressure
Relief Valve.
Figure 2-8.
Start-up and Operating Procedures, Type A and B
Separators (Sheet 5 of 5).
2-29
