Friedrich Twintemp, Service Manual

Page: 40 / 68

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ELECTRIC SHOCK HAZARD
WARNING
Turn off electric power before service or
installation.
Failure to do so may result in personal injury,
or death.
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow these procedures could
result in serious injury or death.
WARNING
HIGH PRESSURE HAZARD
The use of nitrogen requires a pressure
regulator. Follow all safety procedures and
wear protective safety clothing etc.
Failure to follow proper safety procedures
result in serious injury or death.
WARNING
EXPLOSION HAZARD
Recover all refrigerant and oil from the system.
Remove compressor, capillary tube and filter drier
from the system.
Flush evaporator condenser and all connecting
tubing with dry nitrogen or equivalent. Use approved
flushing agent to remove all contamination from
system. Inspect suction and discharge line for
carbon deposits. Remove and clean if necessary.
Ensure all acid is neutralized.
Reassemble the system, including new drier strainer
and capillary tube.
Proceed with step 8-10 on previous page.
SPECIAL PROCEDURE IN THE CASE OF MOTOR
COMPRESSOR BURNOUT
Basically, troubleshooting and servicing rotary compres-
sors is the same as on the reciprocating compressor with
only one main exception:
NEVER , under any circumstances, charge a rotary com -
pressor through the LOW side. Doing so would cause
permanent damage to the new compressor.
ROTARY COMPRESSOR SPECIAL TROUBLESHOOTING
AND SERVICE
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