Grindmaster 850, 815, 830 Thermostat Adjustment, American Metal Ware Hot Water Boiler, Page

Thermostat

Factory set so that knob on BREW setting holds unit at brewing temperature toward HIGH end of brew zone on thermometer dial. Then, if turned back to HOLD position, thermostat should cycle on and off and hold at LOW 'end of BREW zone on thermometer.

Thermostat Adjustment

1.If water temperature is below HIGH end of BREW zone on thermometer dial with knob on BREW setting, remove knob by pulling straight outward. Using a small screwdriver, insert in hole in center of shaft, turn slotted screw counter-clockwise until red pilot light goes on. Check to see that water in unit holds at HIGH end on BREW zone on thermometer and does not boil.

2.If water boils with thermostat knob set at the BREW position, remove knob by pulling straight outward. Using a small screwdriver, insert into hole in center of shaft, turn slotted screw clockwise until red pilot light goes out. Hold shaft so it does not turn while adjusting screw. Add cold water and check that heat comes back on (Pilot light glows), and that thermo- stat cycles at temperature at HIGH end of BREW zone on thermometer dial.

If thermostat will not cycle, replace entire control.

American Metal Ware Hot Water Boiler Page 4