Operation; General - Hatco Imperial Série Manuel D'installation

OPERATION

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 115° to 145°F (46° to
63°C) and should not exceed 155°F (68°C).
NOTE: Minimum temperature differential between inlet and
outlet should never be less than 30°F (17°C).
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
ON/OFF (I/O) switch on the control panel to the ON (I)
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 ON/OFF (I/O) 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
185°–190°F (85°–88°C) and flow pressure should be
20 psi (138 kPa) 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.
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 ON/OFF (I/O) switch to the OFF (O)
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.
Always drain booster heater with power to the unit off or
element burnout could occur.
24
English
Power ON/OFF
(I/O) Switch
Indicator Light
NOTICE
Form No. EBOOSTERm-0816