Roberts Gorden UHA[X][S] 75 Pressure Switch, Ignition Control, Axial Fan/Guard/Motor Assembly

SECTION 14: REPLACEMENT PARTS

14.7 Pressure Switch

Pull off 3 way connector. Spring open plastic clips of mounting cradle. Replace with correct type of pressure switch for model. The pressure switches are color coded for each pressure setting. Carry out a start-up after working on or changing a pressure switch. See Page 29, Section 10.

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MODEL	UHA[X][S] 30	UHA[X][S] 45	UHA[X][S] 60	UHA[X][S] 75	UHA[X][S] 100	UHA[X][S] 125
Pressure Switch	90439801	90439810	90439802	90439810	90439810	90439803
Kit P/N
Color Code	pink	black	yellow	black	black	gray
Set Point in. wc	.23	.35	.32	.35	.35	.41
Pressure Switch	90439850	90439850	90439850	90439850	90439850	90439850
Snap Ring P/N

14.8 Ignition Control

The control mounts to the heat exchanger plate. Pull out ignition cable and wiring from board, noting their positions. Release the four mounting standoffs. Refit in reverse. Ensure correct location of ignition cable and all other wiring.

14.9 Axial Fan/Guard/Motor Assembly

The axial fan unit for the heater is supplied completely assembled and balanced.

MODEL	UHA[X][S] 30	UHA[X][S] 45	UHA[X][S] 60	UHA[X][S] 75	UHA[X][S] 100	UHA[X][S] 125
Axial Fan Guard	91901103	91901103	91901102	91901102	91901102	91901102
Axial Fan Motor	90600104	90600104	90600105	90600105	90600106	90600106
Axial Fan Blade	90709004	90709003	90709002	90709001	90709001	90709001

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