J4AC3 Installation Manual

1/2” nut

5/16” nuts

Fig.10 COVER AND FAN

6.3 REMOVING THE TOP PANEL AND MOTOR

When motor requires changing follow the steps below:

Step 1: Go into electrical panel, disconnect motor power lines.

IMPORTANT NOTE

Disconnect main power to unit. Severe burns and electrical shock will occur if

you do not disconnect main power.

Step 2: Remove cover (be careful of motor wires)

Step 3: Be sure to place fan cover unit on the ground as indicated in Fig. 10

IMPROTANT NOTE

Do not place or lean fan blades on ground or against surface.

Step 4: Remove fan motor by removing 5/16” nuts from cover.

Step 5: Remove fan blade from motor by removing 1/2” nut and place fan on the ground.

Step 6: Reverse removal process to reinstall the fan and motor.

IMPROTANT NOTE

When connecting motor wires be sure to check motor direction.

Damage will occur to condenser unit

if you remove fan nuts prior to cover removal.

NOTE:

Charge for all systems should be checked against the Charging Chart inside the

access corner panel or Charging by weight.

IMPORTANT:Do not operate the compressor without charge in system. Addition of

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7.1 CHARGING BY LIQUID PRESSURE

7.0 CHECKING REFRIGERANT CHARGE

In order to properly charge the system, the following conditions must be met:

1) Outdoor temperature above 60

2) Indoor temperature between 70

F to 100

3) Installation must be complete with brazed joints and drier visually inspected.

4) The unit electrical installation must be checked and unit powered for one (I) hour if

crank case heater is used or five (5) minutes if no crankcase heater is used.

Follow these steps:

1. Run in cooling mode at least 20 minutes.

2. Measure OUTDOOR AMBIENT TEMPERATURE within 6 inches of coil.

3. Measure SUCTION LINE PRESSURE.

4. Find the TARGET LIQUID PRESSURE at the intersection between the SUCTION

LINE PRESSURE and the OUTDOOR AMBIENT TEMPERATURE, if falls between

rows or columns then estimate the TARGET LIQUID PRESSURE or SUCTION LINE

PRESSURE falls between rows or columns then estimate the TARGET LIQUID

PRESSURE between the rows and columns.