Carrier 26H - Manual (Page 29)

Carrier S E R V I C E 26H
To check the oil level:
a. Install gauges and pump down the compressor.
b. Remove one of the oil fill plugs on the side
of the compressor.
c. The oil level should be 1-1/4" as shown in
Fig. 12. Oil can be added through the oil filler
plugs. Reinstall the filler plug immediately to
prevent absorption of moisture. It may damage
the motor windings.
Caution: Avoid overcharging as excess oil may
restrict the capillaries and reduce unit capacity.
On those compressors with a sight glass, oil level
should be between 1/2 and 2/3 above bottom of glass.
TESTING THE COMPRESSOR MOTOR
Series Test Light and Hermetic Test Cord
Fig. 13 shows atest cord that is useful as a 110/220
volt test light or as a cord for starting the com­
pressor without using the unit controls. When used
as a series test light, turn screw base outlet into
the lamp socket, plug into a power source and use
insulated leads indicated in Fig. 13 as probes to
determine continuity. When used as a compressor
starting cord, the fuse is used in the lamp socket.
To start compressor using test cord, disconnect
all leads from compressor terminals. Clip common
and running leads of cord to "C" and "R" terminals
respectively. Plug cord into source of power, and
NOTE MEASURE OIL LEVEL AT 45®ANGLE AS SHOWN FROM OUTSIDE
FACE OF OIL FILL HOLE. OIL GUAGE CONSISTS OF A l/4"COPPER
TEE SOLDERED TO A STRAIGHT PIECE OF 1/4"COPPER TUBING
FIG. 12 - COMPRESSOR OIL LEVEL
momentarily touch starting lead of cord to "S" on
compressor terminals. Do not leave this prong in
contact with terminal "S" for more than one or two
seconds; otherwise the starting winding will be
damaged.
Caution: When using test cord on compressor, stand
clear of terminals. If current should arc or terminal
break, terminal may blow out with considerable
force. An arc might also ignite oil entrained in es­
caping gas.
NOTE: SINGLE CAPACITORS USED FOR II5V. DUTY AND
230 V DUTY ARE DIFFERENT AS NOTED ABOVE
FIG. 13 - TEST CORD DIAGRAM
29 26H-57PD