OPERATION
SYSTEM START-UP
WARNING
Water in the unit is very hot. Wear protective gloves and proper attire when operating to avoid injury.
1.Close drain pipe valve.
2.Open shutoff valve to primary water supply. Water temperature at inlet should be 110° to 140°F (43° to 60°C) and should not exceed 160°F (71°C).
NOTE: Minimum temperature differential between inlet and outlet should never be less than 20°F (11°C).
3.When tank is filled with water, vent all the air from the tank through the dishwasher rinse nozzle and the temperature/pressure relief valve.
CAUTION
Do not turn on power to booster heater until the tank has been filled with water and all air has been vented through the dishwasher rinse nozzle. The heating elements will burn out in seconds if operated when they are not immersed in water.
4.Check all plumbing connections for leaks.
5.Check the temperature/pressure relief valve discharge opening to be sure it is not blocked and no scale or other foreign matter has reduced the size of the opening.
6.Turn on the electrical supply to the booster heater. On Imperial and Compact models, position the on/off switch to the ON position and the indicator light will come on. (See Figure 17.)
7.When the booster heater has had sufficient heating time, operate the rinse cycle and check the water temperature and pressure readings on the gauges.
Water temperature at the booster outlet should be
Indicator Light | On/Off Switch |
Figure 17. Controls-Imperial and Compact Models
NOTE: Outlet water temperatures can be adjusted for
WARNING
Units are equipped with a High Temperature Limit Safety Switch that will shut the power off if the unit overheats. To avoid any injury to personnel or damage to the unit, contact an Authorized Hatco Service Agent if the High Temperature Limit Safety Switch cannot be reset or continues to trip.
SHUT DOWN
Under normal and regular operation Hatco recommends that the unit be turned on at all times.
If the booster heater will not be used for an extended period of time or will be exposed to freezing conditions it should be drained to prevent damage to the unit.
1.Disconnect power supply to the booster heater.
2.Close
3.Open drain valve and drain water from booster heater tank.
CAUTION
To avoid damage to the unit always drain the booster heater with power to the unit off, or element burnout could occur.
Form No. | 26 |
