User's Manual

Repair

48 332144C

Heater

Test Heater Element

1. See Before Beginning Repair, page 39.

2. Wait for heater to cool.

3. Remove heater shroud (90) and electronics cover

(55).

4. Disconnect heater element wires from heater wire

connector. Test with ohmmeter. Replace heater ele-

ment if the resistance reading does not fall within

the range.

Remove Heater Element

1. To remove heater element, first remove thermocou-

ple (310) to avoid damage, see step 7, page 49.

2. Remove heater element (307) from housing (301).

Be careful not to spill any fluid left in housing.

3. Inspect element.

NOTE: It should be relatively smooth and shiny. If there

is a crusted, burnt, ash-like material adhered to element

or sheath shows pitting marks, replace element.

4. Install new heater element (307), holding mixer

(309) so it does not block thermocouple port (P).

5. Reinstall thermocouple, page 49.

6. Reconnect heater element leadwires to heater wire

connector.

7. Replace heater shroud (90) and electronics cover

(55).

Line Voltage

The primary heaters output their rated wattage at either

120 Vac or 230 Vac, depending on system. Low line

voltage will reduce power available and the heaters will

not perform at full capability.

. 15

ti21845a

Heater

Voltage

Heater

Wattage Per

Zone

Element

Wattage Ohms

120 1500 500 24-32

1000 12-16

230 2000 620 73-94

1380 32-43