TM 5-4220-231-14&P
TROUBLESHOOTING - (Con't)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE
ACTION
Step 6. Check pressure
reading of the LP pressure
gage on the VTA panel.
Gage
should register the
same
pressure
as LP OUT gage
on the Secondary
HP Supply side of the DACC.
If not, LP
OUT supply valve is faulty.
Request
intermediate
direct support.
Check the supply hoses
from the DACC to the VTA for kinks or clogs.
Straighten
and clear supply
hoses.
4. PRESSURE
LOSS AT RECOMPRESSION
CHAMBER
SUPPLY
HOSE.
Step 1. Check
LP OUT gage on CRS.
Ensure
LP Gage
Isolation
valve is open.
Open Gage
Isolation valve.
If LP OUT gage
pressure
indicates
normal operating
pressure,
the problem
is downstream
of LP OUT gage.
Ensure
the LP SUPPLY
OUT valve is open.
Open LP SUPPLY
OUT valve.
If pressure
is still not reaching
the recompression
chamber,
either
the LP SUPPLY
OUT
valve is faulty, or there is a kink or blockage
in the supply
hose from the CRS to the
chamber.
Straighten
kinks or clear blockage
from supply
hose.
If problem
persists,
request
intermediate
direct support
to replace
the LP SUPPLY
OUT valve.
If LP OUT gage
pressure
registers
below normal operating
pressure,
go to Step 2.
Step 2.
Check
HP IN gage on CRS.
If gage indicates
below normal operating
pressure,
the problem
is upstream
of the gage and the CRS.
Ensure
that DASS has HP air and that the connections
between
the DASS and the
CRS are free of kinks or blockage.
Step 3.
Check
SUPPLY
OUTLET valve on DASS to ensure
it is open.
Open SUPPLY
OUTLET
valve on DASS.
If HP IN gage
on CRS
indicates
normal
operating
pressure,
the problem
is
downstream
of gage; go to Step 4.
3-13
