MAINTENANCE
GENERAL
WARNING
To avoid any injury or damage to the booster heater turn the power OFF at the disconnect switch/circuit breaker and allow to cool before performing any maintenance or adjustments.
THERMOSTAT
Thermostat Adjustment
The thermostat is factory calibrated to produce temperatures of
NOTE: Low Temperature Dishmachines require the thermostat(s) to be adjusted to
1.Remove the access cover.
To lower the temperature setpoint, turn the outer adjustment screw counterclockwise.
To raise the temperature setpoint, turn the outer adjustment screw clockwise.
NOTE: 1/6 turn of the outer screw equals 12°F (6.7°C).
If recalibration is necessary, with the outer screw at high stop turn inner adjustment screw clockwise to raise the set point.
NOTE: 1/6 turn of the inner screw equals 8°F (4.4°C).
HIGH TEMPERATURE LIMIT SAFETY SWITCH
All Hatco Electric Booster Water Heaters are equipped with a manually reset high temperature limit safety switch. If the temperature of the water in the heater exceeds 210°F (99°C) the safety switch will shut off the power. The switch must be manually reset by pushing the red button.
If the high temperature limit safety switch needs to be reset use the following procedure (See Figures 18 and 20.):
1.Remove access cover.
2.Push red reset button.
3.If tripping repeats, call an Authorized Service Agent.
Access Cover
Figure 18. Access Cover for Thermostat(s) and High
Temperature Limit Safety Switch
Outer Screw
Inner Screw
Figure 19. Thermostat Adjustment
Red Reset Button
Figure 20. High Temperature Limit Safety Switch
27 | Form No. |