Operation; General - Hatco Imperial Series Installation And Operating Manual

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General

Use the following procedures to operate Hatco Electric Booster
Water Heaters.
BURN HAZARD: Water in unit is very hot. Wear protective
gloves and proper attire when operating to avoid injury.
Startup
1. Close the drain valve.
2. Open the shutoff valve to the primary water supply line.
The water temperature at inlet should be 46° to 63°C (115°
to 145°F) and should not exceed 68°C (155°F).
NOTE: Minimum temperature differential between inlet and
outlet should never be less than 16°C (29°F).
3. Vent all the air from the tank through the dish machine
rinse nozzles and the temperature/pressure relief valve
when the tank is filled with water.
DO NOT turn on power to the booster heater until tank has
been filled with water and all air has been vented through
the dish machine rinse nozzles. Heating elements will burn
out in seconds if operated when 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 booster water heater.
• For Imperial and Compact models, move the Power I/O
(on/off) switch on the control panel to the I (on) position.
• For Mini-Compact models, turn on power at the fused
disconnect switch/circuit breaker.
NOTE: Mini-Compact models can be configured with an
optional Power I/O (on/off) switch.
7. When the booster water 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
85°–88°C (185°–190°F) and flow pressure should be
138 kPa (20 psi) maximum.
NOTE: Outlet water temperatures can be adjusted for
Low-Temperature Dish Machine applications. See the
MAINTENANCE section for thermostat adjustment
procedure.
WARNING
Units are equipped with a high temperature limit safety
switch that will shut off the power if the unit overheats.
Contact an Authorized Hatco Service Agent if the high
temperature limit safety switch cannot be reset or
continues to trip.
Form No. EBOOSTER_AAM-1017
CAUTION
CAUTION
Control Panel (Imperial and Compact models shown)
Shutdown
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. Move the Power I/O (on/off) switch to the O (off) position,
and turn off power at the fused disconnect switch/circuit
breaker.
2. Close the shutoff valve to the primary water supply line.
3. Open the drain valve and drain the water from the booster
heater tank.
BURN HAZARD: Water in unit is very hot. Wear protective
gloves and proper attire when operating to avoid injury.
Always drain booster heater with power to the unit off or
element burnout could occur.
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OPERATION

Power I/O (on/off) Switch
Indicator Light
CAUTION
NOTICE