MAINTENANCE—CONTINUED
Maintenance Procedures—Continued
Venter Motor, Wheel, and Pressure Sensing Tap Maintenance
NOTES:
• Venter motor bearings are permanently lubricated.
• Keep all hardware removed to be used in reassembling and installing the replacement parts.
Remove dirt and grease from the motor casing, venter housing, pressure sensing tap, and venter wheel. Replace
the venter motor and wheel assembly as follows:
1. Turn OFF gas and disconnect electric power.
2. Remove burner/control compartment access panel.
3. Disconnect three venter motor wires at DSI control, capacitor wires at capacitor (if applicable), and ground screw
(located on control panel).
4. While holding venter motor, remove six screws that secure venter motor mounting plate to venter housing. Remove
motor and wheel assembly from heater.
5. Reassemble with replacement venter motor and wheel. Ensure that venter wheel is properly positioned on shaft
(see Figure 32).
1/2 INCH (13 mm) FROM
MOTOR PLATE TO WHEEL
VENTER
MOTOR
VENTER WHEEL
MOTOR PLATE WITH GASKET
Figure 32. Venter Wheel Position on Shaft
6. Reconnect venter wires in accordance with wiring diagram.
7. Install access panel.
8. Restore electric power to heater and turn ON gas.
9. Follow instructions on lighting instruction plate to light heater.
10. Check for proper heater operation.
52
I-UEZ (04-21) 1034347-0
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