Hardy LC2500 Installation And Operating Instructions Manual Download

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HARDY MANUFACTURING CO., INC (MODEL LC300, LC500 & LC2500)

PAGE 34

7-2

Preseason Maintenance (continued)

WATER PUMP – Unplug the power cord going to the water pump. Close the valve
above the water pump and the return water valve at the bottom of the heater. Remove
the pump motor from the pump housing by removing the four bolts in the pump
housing. Remove the impeller cartridge assembly from the pump housing. Check the
impeller to determine that it is free by spinning the impeller in the cartridge. Check the
pump housing for rust or any other build up that could impede the flow of water.
Reassemble the water pump, making sure the “O” ring in the cartridge is seated right.
Once the pump is reinstalled, open the water valve above the pump and the return
valve.
GASKETS - Check all door seals. To replace a door seal remove the door and frame
from the heater. Pull out old seal and clean the door and frame of all old silicone. Put
two small beads of silicone in the gasket area of the door and install rope into this area
starting at one corner. New rope seals are 5/8” diameter and 64” length for the fire box
door, and 48” length for the ash door. Work the rope down smooth all the way around
the door and cut off excess rope. Fill in the corner gaps with silicone, allow to dry
before seating against the frame. To reinstall the door, clean the frame of the heater of
all old silicone. Put a generous bead of silicone on the heater door frame being sure to
fill the corner joints with the silicone. Reinstall the door into the same screw holes.
Tighten all screws, wipe off any silicone that might have squeezed out.
Check the gasket on the clean out lid on the air tube in back of the heater. To replace
the gasket on the clean out lid first remove old gasket completely. Put a generous
bead of silicone on the back side of the lid where it will be coming into contact with the
square air tube going into the heater. Place a piece of wax paper across the silicone to
prevent it from sticking to anything other than the lid. Spray the wax paper with a
misting of water to allow the paper to become more flexible. Close the lid down gently
onto the air tube, lift back up to check for a indent into the paper and silicone seal. If
indent has wrinkles in the paper gently lift the paper away from the silicone to
straighten back out and set lid back down to form the seal again. You may have to do
this step a couple of times until you get a good seal. Once the seal has been formed,
let the lid rest on the air tube until silicone seal has cured.

7-3

In Season Maintenance

WATER LEVEL- Monitor water level in the heater by removing the condenser stack
and looking inside the water tank. You should be able to see the low water switch
inside the splash guard in the water tank. The low water switch is a horizontally
mounted reed switch that has a magnet in the floating portion of the switch. When the
water level is high enough to raise the magnet up off of the reed switch this allows the
switch to break contact, and discontinues power to the water solenoid and low water
light. When the water level drops the floating portion of the low water switch the
magnet will once again come into close proximity of the reed switch and close the
contacts allowing power to be applied to the water solenoid and low water light. On
models that do not have automatic fill the low water switch turns on power to the low
water light only. The heater water level will need to be corrected manually by adding
water to the condenser tank area until the low water light goes out. It is recommended
that you check this water level at least once a week while the heater is in operation.