2
ELECTRICAL
General
Consult the wiring diagram located inside the compressor
terminal box cover and the diagrams shown below associat-
ed with the correct terminal plate and overloads for proper
wiring connections.
The compressor will have one of 3 terminal plate configura-
tions: one is a 5-pin assembly and the remaining two are 6-
pin assemblies. Refer to Fig. 5 through 7 for details on each
arrangement. To determine which terminal plate arrange-
ment is used, refer to digit 10 of the nameplate model num-
ber and Table 1.
Table 1 — Terminal Plate Arrangement
Identification
Fig. 1 — 06D 2-Cylinder Compressors 8 and 9 CFM
(0.23 and 0.25 m
3
/min)
LIFTING LUG
7/16-20 SAE
OIL DRAIN
CONNECTION (NOT SHOWN)
DISCHARGE SERVICE
VALVE LOCATION
NAMEPLATE
CRANKCASE HEATER
(ACCESSORY) MOUNTS
TO UNDERSIDE OF
BOTTOM COVER
SUCTION
SERVICE
VALV E
LOCATION
1/4” NPT HIGH
PRESSURE
CONNECTION
1/4” NPT PUMP
PRESSURE
(HIGH SIDE
OIL SAFETY
SWITCH
CONNECTION)
SIGHT GLASS
7/16-20 FLARE (45°)
CONNECTION USED FOR:
a) LOW PRESSURE
CONNECTION
b) LOW SIDE OIL SAFETY
SWITCH CONNECTION
c) OIL FILL (SUMP)
CONNECTION
Fig. 2 — 06D 4-Cylinder Compressors
13 and 16 CFM (0.36 and 0.45 m
3
/min)
1/4” NPT HIGH PRESSURE CONNECTION
SUCTION SERVICE
VALVE LOCATION
(MOTOR NAMEPLATE
BARREL END)
NAMEPLATE
1/4” NPT OIL FILL
(SUMP) CONNECTION
ALSO LOW SIDE OIL
SAFETY SWITCH
CONNECTION
SIGHT GLASS
CRANKCASE HEATER
(ACCESSORY)
MOUNTS TO UNDERSIDE
OF BOTTOM COVER
7/16-20 SAE
OIL DRAIN
CONNECTION
1/4” NPT OIL PUMP
PRESSURE
(HIGH SIDE OIL SAFETY
SWITCH CONNECTION)
CYLINDER HEAD
COOLING
FAN MOUNTING
STUDS (06DR
MODELS ONLY)
DISCHARGE SERVICE VALVE LOCATION
7/16-20 FLARE (45°) LOW
PRESSURE CONNECTION
DISCHARGE VALVE
LOCATION
LIFTING LUG
(NEW MODELS ONLY)
1/4" NPT HIGH
PRESSURE
CONNECTION
7/16-20 FLARE
(45) LOW
PRESSURE
CONNECTION
CYLINDER HEAD
COOLING FAN
MOUNTING STUDS
(06DR MODELS ONLY)
1/4" NPT OIL PUMP
PRESSURE (HIGH
SIDE OIL SAFETY
SWITCH
CONNECTION)
7/16"-20 SAE DRAIN
CONNECTION
SUCTION VALVE
LOCATION (MOTOR
BARREL END)
NAMEPLATE
1/4" NPT OIL FILL
(SUMP)
CONNECTION
ALSO LOW SIDE
SAFETY SWITCH
CONNECTION
SIGHT GLASS
CRANKCASE HEATER
(ACCESSORY)
INSERTS INTO WELL
IN BOTTOM COVER
Fig. 3 — 06D 4-Cylinder Compressors
18 and 20 CFM (0.52 and 0.56 m
3
/min)
DIGIT 10 OF
NAMEPLATE
MODEL NUMBER
TERMINAL
PLATE
ARRANGEMENT
FIGURE
A, C, or G 5-Pin 5
0, 1, 2, or 3 6-Pin Universal 6
BorD 6-Pin Part Wind 7
Fig. 4 — 06D 6-Cylinder Compressors
24/25, 28, 37 and 41 CFM (0.68, 0.79, 1.05 and
1.16 m
3
/min)
7/16”-20 SAE OIL
DRAIN CONNECTION
CRANKCASE HEATER
(ACCESSORY)
INSERTS INTO HOLE
IN BOTTOM COVER
SIGHT GLASS
NAMEPLATE
CYLINDER HEAD
COOLING FAN
MOUNTING STUDS
SUCTION SERVICE
VALVE LOCATION
(MOTOR BARREL END
7/16-20 FLARE (45°) LOW
PRESSURE CONNECTION
(BEHIND CYLINDER HEAD)
1/4” NPT HIGH PRESSURE
CONNECTION
DISCHARGE SERVICE
VALVE LOCATION
CYLINDER HEAD
COOLING FAN
MOUNTING STUDS
(06DR MODELS ONLY)
1/4” NPT OIL PUMP
RESSURE (HIGH
IDE OIL SAFETY
WITCH CONNECTION)
1/4” NPT OIL FILL (SUMP)
CONNECTION ALSO LOW
SIDE OIL SAFETY SWITCH
CONNECTION
BEARING HEAD
Fig. 5 — 5-Pin Plate Assembly
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