Form No. HHM-0517
11
MAINTENANCE
General
Hydro-Heaters are designed for maximum durability and
performance with minimum maintenance.
ELECTRIC SHOCK HAzARD:
• Turn OFF power switch, unplug power cord/turn off
power at circuit breaker, and allow unit to cool before
performing any cleaning, adjustments, or maintenance.
• DO NOT submerge or saturate with water. Unit is not
waterproof. Do not operate if unit has been submerged
or saturated with water.
• Do not steam clean or use excessive water on unit.
• Do not clean unit when it is energized or hot.
This unit has no “user-serviceable” parts. If service is
required on this unit, contact an Authorized Hatco Service
Agent or contact the Hatco Service Department at
800-558-0607 or 414-671-6350.
Use only Genuine Hatco Replacement Parts when service
is required. Failure to use Genuine Hatco Replacement
Parts will void all warranties and may subject operators of
the equipment to hazardous electrical voltage, resulting in
electrical shock or burn. Genuine Hatco Replacement Parts
are specified to operate safely in the environments in which
they are used. Some aftermarket or generic replacement
parts do not have the characteristics that will allow them
to operate safely in Hatco equipment.
Recommended Cleaning Schedule
Complete cleaning and power flushing should be done:
• On a daily basis.
• Whenever food particles accumulate in the tank.
• Whenever a food product spill occurs.
• Whenever the unit is to be stored or shipped, especially in
freezing temperatures.
Helpful Hints for Maximum Performance
• Keep inlet and outlet free of debris.
• Keep perforated water baffle (not supplied) in place and
free of debris (FR2 units only).
• Delime unit using a non-corrosive deliming solution.
Daily Cleaning
1. Move the POWER ON/OFF (I/O) switch to the OFF (O)
position and allow the unit and water to cool.
2. Drain water from the sink or holding vessel.
3. Connect one end of a drain hose onto the unit drain with
the other end in a bucket or open site drain in a manner
according to local plumbing codes.
4. Drain water from the unit.
• Open the unit drain by moving the drain handle
backward until it is in the horizontal position and allow all
water to drain.
• Unscrew and remove the pipe cap(s) from the clean-out
drain(s) and allow all water to drain, if applicable.
5. Wipe visible deposits from the sink or holding vessel. For
units with Auto-Fill, clean water sensor on sidewall of tank.
WARNING
6. Close the drain by moving the drain handle toward the front
of the unit until it stops.
7. Screw the pipe cap(s) onto the clean-out drain(s), if
applicable.
8. Add appropriate cleaning solution to the unit.
For daily cleaning:
Dissolve a safe, non-toxic, non-
corrosive sanitizer into 1 gallon (3.7 L) of hot water and
pour into sink or holding vessel. Allow to soak for a
minimum of 15 minutes.
For removing lime and mineral deposits:
Add a mixture
of 75% water and 25% white vinegar into the heat tank
through the sink strainer assemblies. Do not use flavored
vinegar. Allow the unit to stand with the mixture in the
reservoir for an appropriate period of time.
NOTE: The amount of lime and mineral content in the water
and how often the unit is operated will dictate how often
the unit needs to be delimed. Units used with water that
contains high lime and mineral content may require
deliming on a daily basis.
NOTE: The time required will vary depending on the solution
used and amount of deposits in reservoir.
NOTE: Product failure caused by liming or sediment buildup is
not covered under warranty.
9. After cleaning, drain all expended solution from the unit
through the drain and the clean-out drain(s).
10. If applicable, scrub the clean-out drain(s) with the cleaning
brush.
11. Thoroughly rinse unit with fresh water until discharge is
clear and all sanitizers have been removed and rinsed.
12. Upon visual inspection, if tank is not thoroughly clean,
repeat steps 8–11.
13. Close the drain by moving the drain handle toward the front
of the unit until it stops.
14. Screw the pipe cap(s) onto the clean-out drain(s), if
applicable.
Draining Heater For Service Protection
Use the following procedure when shutting down the unit for
long periods of time.
1. Move the POWER ON/OFF (I/O) switch to the OFF (O)
position.
2. Perform the entire “Cleaning” procedure in this section.
3. Turn off the electrical power supply to the heater.
4. Make sure the water has been drained from the unit as well
as the sink or holding vessel.
