UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL

15.9.1Fan Removal and Replacement

WARNING

Severe Injury Hazard

Turn off gas and electrical supply before service.

Fan can start automatically at any time.

Failure to follow these instructions can result in severe injury or product damage.

15.10 Limit Switches

15.10.1 Removal and Replacement

1.Remove the electrical connections to the switch.

2.Unscrew the two screws securing the switch.

3.Fit a new switch with two screws.

4.Reconnect the electrical connections and test operation.

Remove the screws

and washers.

Description

Part Number

Qty.

Axial Fan UHA[X][S] 150 - 175

90710417*

1

Axial Fan UHA[X][S] 200 - 250

90710417

1

Axial Fan UHA[X][S] 300 - 400

90710416

2

*For units built after July 2011.

For units built before July 2011, P/N 90710416.

15.9.2 To Replace the Fan Assembly

To replace the fan assembly, reverse the procedure shown above.

Check that the fan blades are free to rotate before turning on the power to the fan.

Strictly comply with the color code of the fan

wires to ensure correct operation. See Page 24, Section 10.5 wiring diagram.

Use only genuine replacement parts sold and supplied by Roberts-Gordon LLC.

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Roberts Gorden 225, 200, 350, 150, 400, 250, 300, 175 service manual To Replace the Fan Assembly

175, 225, 300, 250, 400 specifications

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