Hatco FR2 Series - Manual (Page 12)

MAINTENANCE
10 Form No. FR2M-0604
WEEKLY (See Figure 8)
1. Turn power switch to the OFF position.
2. Drain holding vessel to discharge visible water
and debris.
3. Wipe visible deposits from the sink or tank.
4. Remove clean-out caps (2- or 3-element units
only).
5. Inspect for lime and sediment build-up at the
sump drain outlet and heating element chamber
outlets (2 or 3 element units only have heating
element chamber outlets).
6. Remove any visible lime sediment or debris
deposits from the outlets using the cleaning
brush supplied with the unit, Hatco part number
03.40.060.00.
To remove, insert brush into the clean-out
and sump drain outlets and use a scrubbing
motion until clean.
7. Remove brush and flush clean water through
the chambers until discharge is clear.
8. Reinstall clean-out caps removed in step 4.
9. Close all drains and fill with water before
restarting.
DELIMING INSTRUCTIONS
CAUTION
Inspect weekly for lime buildup inside unit.
Excessive amounts can affect unit performance
and reduce the operating life of the unit.
NOTE: Product failure caused by liming or
sediment buildup is not covered under warranty.
CAUTION
To avoid any damage to the heater unit
use only delimers that are non-corrosive
to aluminum, brass and stainless steel.
Damage caused by corrosive material
or solutions is not covered under warranty.
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 supplied with water that contains high
lime and mineral content may require deliming
on a daily basis.
NOTE: The delimer used should be a safe,
non-toxic, non-corrosive solution. Follow
the delimer’s instructions.
In order to dissolve water scale, lime and rust
deposits from the heating chamber, thermostat
probes and interior surfaces of the unit, perform
the following procedure:
1. Disconnect power supply to heater at breaker
and turn power switch to OFF position.
2. Connect one end of a drain hose onto the sump
drain outlet with the other end in a bucket
or open site drain in a manner according
to local plumbing codes.
3. Open sump drain valve and drain all water.
4. When draining is finished, close sump
drain valve.
5. Slowly add delimer and water mixture into heat
tank through sink strainer assemblies. Allow
the unit to stand with the mixture
in the reservoir for the recommended period
of time.
NOTE: The time required will vary depending
on the solution used and amount of deposits
in the reservoir.