Thermo Products GDM1-80N, GMD1-60N service manual Viii. Dealer Maintenance, A.Electrical, B.Burners

Models: GMD1-60N GDM1-80N

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All installations and services must be performed by qualified service personnel.

VIII. DEALER MAINTENANCE

A qualified heating contractor should perform the following maintenance procedures at the beginning of each heating season. Correct any deficiencies at once.

WARNING: Personal injury or property damage could result from repair or service of this furnace by anyone other than a qualified heating contractor. Only the homeowner/user routine maintenance described in the Users Information Manual may be performed by the user.

WARNING: To avoid injury from moving parts, shut off the power to the furnace before removing blower compartment door.

CAUTION: Label wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.

A.ELECTRICAL:

1.Check all wiring for loose connections and any signs of damage or unusual wear.

2.Check for correct voltage at the furnace when operating.

3.Check amp-draw on blower motor and inducer motor to assure they are not exceeding nameplate amp rating.

4.Check for correct operation and proper settings (if manually adjustable) of all controls.

Shut off gas and disconnect power before continuing.

B.BURNERS

If it appears that material is accumulating in the burner box, the burner box cover can be removed and the box and burners can be vacuumed. If necessary, the burners assembly can be removed by taking out the two screws/one on each bracket on top of burner box and removing the burner manifold assembly (See Fig. 9). Assembly must be pulled & tilted down in order to remove from box. If necessary, the individual tubes can be cleaned out using compressed air to blow out the individual tubes. Care must be taken not to damage the igniter.

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Thermo Products GDM1-80N, GMD1-60N service manual Viii. Dealer Maintenance, A.Electrical, B.Burners