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To change the speed of the blower motor (BM), remove the fan

motor speed leg lead from the blower relay (BR). This wire is

attached to IGC terminal BM for single-phase and 3-phase units.

To change the speed, remove and replace with lead for desired

blower motor speed. Insulate the removed lead to avoid contact

with chassis parts.

For 460-v GE Motors—The motor leads are color coded as

follows:

3-SPEED

Black = high

Violet = jumper

Orange = medium

Red = low

To change the speed of the blower motor (BM), remove fan motor

speed lead from the blower relay (BR) and replace with the lead

for the desired blower motor speed. The motor speed lead is

attached to terminal BM. For low and medium speeds black must

be connected to the jumper wire. Insulate removed lead end to

avoid contact with chassis parts. To select high speed on 460-v GE

motors, separate the black female quick connect (QC) from the

jumper lead male quick connect (QC) and connect the black lead

to the BR. Insulate the jumper to avoid contact with any chassis

parts.

MAINTENANCE

To ensure continuing high performance, and to minimize the

possibility of premature equipment failure, periodic maintenance

must be performed on this equipment. This heat pump unit should

be inspected at least once each year by a qualified service person.

To troubleshoot unit, refer to Table 5.

NOTE TO EQUIPMENT OWNER: Consult your local dealer

about the availability of a maintenance contract.

The ability to properly perform maintenance on this equip-

ment requires certain expertise, mechanical skills, tools and

equipment. If you do not possess these, do not attempt to

perform any maintenance on this equipment, other than those

procedures recommended in the User’s Manual. FAILURE

TO HEED THIS WARNING COULD RESULT IN SERI-

OUS INJURY OR DEATH AND POSSIBLE DAMAGE TO

THIS EQUIPMENT.

Fig. 27—Cooling Charging Chart, 50JS 042 Units

C00030

SUCTION LINE PRESSURE (KILOPASCALS)

SUCTION LINE PRESSURE (PSIG)

-7 -1 4 10 16 21 27

SUCTION LINE TEMPERATURE (°F)

SUCTION LINE TEMPERATURE (°C)

689

620

551

483

414

345

276

207

100

(042) 60HZ CHARGING CHART

20.0 30.0 40.0 50.0 60.0 70.0 80.0

OUTDOOR TEMP

° F ° C

115 46

125 52

45 7

55 13

65 18

75 24

95 35

105 41

85 29

50JS500091

Fig. 28—Cooling Charging Chart, 50JS 048 Units

C00031

SUCTION LINE PRESSURE (KILOPASCALS)

SUCTION LINE PRESSURE (PSIG)

-7 -1 4 10 16 21 27

SUCTION LINE TEMPERATURE (°F)

SUCTION LINE TEMPERATURE (°C)

689

620

551

483

414

345

276

207

100

(048) 60HZ CHARGING CHART

20.0 30.0 40.0 50.0 60.0 70.0 80.0

OUTDOOR TEMP

° F ° C

115 46

125 52

45 7

55 13

65 18

75 24

95 35

105 41

85 29

50JS500092

Fig. 29—Cooling Charging Chart, 50JS 060 Units

C00032

SUCTION LINE PRESSURE (KILOPASCALS)

SUCTION LINE PRESSURE (PSIG)

-7 -1 4 10 16 21 27

SUCTION LINE TEMPERATURE (°F)

SUCTION LINE TEMPERATURE (°C)

689

620

551

483

414

345

276

207

100

(060) 60HZ CHARGING CHART

20.0 30.0 40.0 50.0 60.0 70.0 80.0

OUTDOOR TEMP

° F ° C

115 46

125 52

45 7

55 13

65 18

75 24

95 35

105 41

85 29

50JS500093

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 26 27 28

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