Page 12
SENSING
BULB
SUCTION LINE
SUCTION
MUFFLER
DISTRIBUTOR
DEFROST
SWITCH S6
FILTER/DRIER
W/INTERNAL
CHECK VALVE
ROTARY COMPRESSOR
VAPOR LINE FROM
INDOOR COIL
LIQUID LINE FROM INDOOR COIL
ACCUMULATOR
REVERSING VALVE
MUFFLER
TO OUTDOOR COIL
EXPANSION VALVE
STRAINER
SERVICE
VALVES
FIGURE 22
HP23-141 REFRIGERATION COMPONENTS
LIQUID LINE
SERVICE PORT
DISCHARGE LINE
SERVICE PORT
HIGH PRESSURE
SWITCH PORT
HIGH PRESSURE
LIMIT S4
RESET BUTTON
VAPOR LINE FROM
INDOOR COIL
HP23-211 AND LARGER TYPICAL REFRIGERATION COMPONENTS
SUCTION LINE
FIGURE 23
EXPANSION VALVE
COMPRESSOR
SENSING BULB
DISTRIBUTOR
SERVICE
VALVES
ACCUMULATOR
-460,-510 AND -650 ONLY
DEFROST
SWITCH S6
FILTER/DRIER
W/INTERNAL
CHECK VALVE
MUFFLER
LIQUID LINE FROM
INDOOR COIL
TO
OUTDOOR COIL
DISCHARGE LINE
SERVICE PORT
STRAINER
LIQUID LINE
SERVICE PORT
REVERSING
VALVE
HIGH PRESSURE
LIMIT S4
RESET BUTTON
HIGH PRESSURE
SWITCH PORT
A – Pumping Down System
CAUTION
Deep vacuum operation (operating compressor
below 0 psig) can cause internal fusite arcing
resulting in a damaged or failed compressor. This
type of damage will result in denial of warranty
claim.
The system may be pumped down when leak checking
the line set and indoor coil or making repairs to the line
set or indoor coil.
1– Attach gauge manifold.
2– Front seat (close) liquid line valve.
3– Start outdoor unit in cooling mode.
4– Monitor suction gauge. Stop unit when 0 psig. is
reached.
5– Front seat (close) suction line valve.
