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13HPD SERIES
Typical Unit Parts Arrangement
CAPACITOR
(C12)
SINGLE POLE
CONTACTOR (K−1)
DEFROST CONTROL
(CMC1)
GROUND LUG
CONTROL BOX
LIQUID LINE BI−FLOW
FILTER DRIER
DEFROST
THERMOSTAT
(S6)
LIQUID LINE
SERVICE PORT
VAPOR LINE SERVICE
PORT
CRANKCASE HEATER
(HR1) (−042, −048, −60
UNITS ONLY)
REVERSING VALVE (L1)
CHECK / EXPANSION
VALVE
MUFFLER
HIGH PRESSURE SWITCH (S4)
(−018 UNIT ONLY)
TRUE SUCTION PORT
Figure 1. Typical Unit Parts Arrangement
Torque Requirements
When servicing or repairing heating, ventilating and air
conditioning components, ensure the fasteners are
appropriately tightened. Table 1 lists torque values for
fasteners.
Table 1. Torque Requirements
Parts
Recommended Torque
Service valve cap
8 ft.− lb.
11 NM
Sheet metal screws
16 in.− lb.
2 NM
Machine screws #10
28 in.− lb.
3 NM
Compressor bolts
90 in.− lb.
10 NM
Gauge port seal cap
8 ft.− lb.
11 NM
Operating Gauge Set and Service Valves
USING MANIFOLD GAUGE SET
When checking the system charge, only use a manifold
gauge set that features low loss anti−blow back fittings.
OPERATING SERVICE VALVES
The liquid and vapor line service valves are used for
removing refrigerant, flushing, leak testing, evacuating,
checking charge and charging.
Each valve is equipped with a service port which has a
factory−installed valve core. Figure 2 provides information
on accessing and operating both angle and ball service
valves.
IMPORTANT
To prevent stripping of the various caps used, the
appropriately sized wrench should be used and fitted
snugly over the cap before tightening.
IMPORTANT
Only use Allen wrenches of sufficient hardness (50Rc −
Rockwell Harness Scale minimum). Fully insert the
wrench into the valve stem recess.
Service valve stems are factory−torqued (from 9 ft−lbs for
small valves, to 25 ft−lbs for large valves) to prevent
refrigerant loss during shipping and handling. Using an
Allen wrench rated at less than 50Rc risks rounding or
breaking off the wrench, or stripping the valve stem
recess.