Bunn H5M Guía Del Usuario

13

Location:

The tank heater is located in the tank lid.

Test Procedure:

1.  Disconnect the dispenser from the power source.

2.  Check the voltage across the terminals of the tank 

heater with a voltmeter. Connect the dispenser to 

the power source. The indication must be:

 

a.) 100 to 120 volts ac for 100 to 120 volt mod-

els,

 

b.) 200 to 240 volts ac for 200 to 240 volt mod-

els,

 

c.) 230 volts ac for 230 volt models.

3.  Disconnect the dispenser from the power source.

If voltage is present as described, proceed to #4.

If voltage is not present as described, replace the tank 

heater.

FIG. 7 TANK HEATER

FIG. 8 TANK HEATER WIRING

BLK to Limit 

Thermostat or

BLK to Contactor

WHI to Terminal 

Block or RED to 

Contactor

P1780

P1793

4.  Remove the tank heater from the tank lid and in-

spect it for cracks in the sheath.

If the sheath shows no sign of damage, proceed to 

#5.

If the sheath is damaged, replace the tank heater.

5.  Check for continuity across the tank heater termi-

nals.

If continuity is present as described, reinstall the tank 

heater. The tank heater is operating properly.

If continuity is not present as described, replace the 

tank heater.

Removal and Replacement:

1.  Remove the wires to the tank heater.

2.  Remove  the  8-32  nuts  from  the  tank  heater 

flange.

3.  Remove the tank heater.

4.  Inspect the tank heater gasket and replace if neces-

sary.

5.  Securely install the new tank heater. Be certain of 

a watertight seal.

6.  Reconnect the wires, FIG. 8.

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