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TM5-4120-384-14
Table
5-1.
TROUBLESHOOTING-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step
2.
Check that the LOW and HIGH PRESSURE cutoff
switches  are  not  tripped.
Press and release the LOW and HIGH PRESSURE
switches  to  RESET.
If  switches  do  not  remain
in,  check  and/or  replace  switches.
(See  para
27.)
Step
3.
Check  that  the  compressor  motor  internal
overload
switch  is  operational.
Replace  compressor
if
thermal
cutoff
switch
is
defective.
Step
4.
Inspect  and
check
compressor
for
burnout.
(See
Replace
burned
out
compressor.
2.
COMPRESSOR SHORT CYCLES.
Step
1.
Check  for
obstructions
in
front
screen.
Remove  obstructions
and/or
roll up
and
secure
canvas  cover.
Step
2.
Check
for
dirt
in
coil.
(See
Clean
coil.
Step
3.
Check if HIGH PRESSURE cutoff switch RESET is out.
Push and release HIGH PRESSURE switch to RESET.
Use  great  care  to  avoid  contact  with  liquid
refrigerant  or  refrigerant  gas  being
discharged  from  any  container  under  pressure.
Sudden  and  irreversible  tissue  damage  can
result  from  freezing.
5-5

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