Hatco Powermite PMG-100 Manuel D'installation Et D'utilisation page 23

English
Vent Outlet Adjustment to Right Side
1. Shut off electrical power to the heater.
2. Remove front panel.
3. Remove both side panels by removing two screws on each
panel from inside the cabinet. (Save these screws.)
4. Remove five screws holding the top of the back panel and
two nuts form below the front supports. (Save fasteners.)
5. Clear wires from raceway clips and lift the top off the heater.
6. Remove three screws holding the straight 90° elbow duct
to the exhaust blower and pull duct out.
7. Remove three screws holding the straight duct to the 90°
elbow duct and separate. (Save the screws.)
8. Attach the straight duct to the discharge of the exhaust
blower using the three screws previously removed. Retain
the 90° elbow duct for future relocation or discard.
9. Reassemble top and side panels in reverse order from
above.
10. Remove vent hole cover from right side panel and place on
back panel before reinstalling side duct letting exhaust duct
protrude.
Heat Exchanger Replacement
1. Shut off gas supply.
2. Shut off electrical supply.
3. Shut off water supply.
4. Allow unit to cool down to room temperature.
5. Open the drain valve under the Booster Water Heater to
remove water from the tank and pump assembly.
6. Disconnect water, gas, and relief valve plumbing as needed
to access the booster.
7. Remove front cover, sides, top and rear panel to access the
heat exchanger.
8. Remove the drain plug located on the front of the heat
exchanger (do not discard) and allow the water to drain from
the heat exchanger into a pan or receptacle. Exchanger
holds approximately 16 oz. (498 g).
9. Mark and remove the two water fittings and discard old
gaskets (new ones are provided), then position flexible
lines away from harm.
10. Carefully remove insulation from around the heat exchanger
and set aside.
11. Remove the perimeter screws from flue vent collection
hood and carefully lift fan with vent collector hood off of
the top of the heat exchanger. Disconnect fan wires if you
cannot set the hood in a secure nearby location.
12. Remove wires from high limit switch and then remove two
screws that hold switch to exchanger.
13. Remove screws that hold the heat exchanger to combustion
chamber and lift exchanger away. Discard old gasket
between exchanger and combustion chamber (new part
provided).
14. Place new gasket o combustion chamber and position new
heat exchanger on top. Fasten exchanger to combustion
chamber with screws removed earlier.
PMG100200M-0222
15. Place new gasket on top flange of heat exchanger and
replace vent collector with power vent fan on top of new
exchanger (reconnect wires if needed) securing with
original screws.
16. Replace insulation around the heat exchanger and fasten
in place with high temperature aluminum tape.
17. Attach high limit switch to exchanger with screws previously
removed, and then attach wire leads to switch.
18. Place new gaskets (provided) onto water fittings and
carefully tighten flexible lines making sure they are oriented
for proper flow.
19. Seal threads of drain plug with a food grade sealant to
prevent leakage and install in new exchanger.
20. Reconnect water and gas lines and relief valve plumbing.
21. Close drain valve under Booster Water Heater and turn
on water supply to booster, then turn on electrical supply
and allow pump to displace trapped air out of the new heat
exchanger, then purge this air out of the booster by running
several rinse cycles on the dishmachine. Check all fittings
for leaks.
22. Turn on gas supply and follow start-up procedures. Check
all fittings for leaks.
Blended Phosphate Water Treatment Cartridge
Replacement
1. Shut off electrical power to the heater.
2. Shut off water supply and open drain valve to remove water
in piping.
3. Loosen canister using wrench attached.
4. Remove canister and discard depleted cartridge.
5. Use a clean damp cloth, wipe interior of canister clean.
NOTE: Make sure O-ring seal is properly placed in canister.
6. Reverse above procedure to reinstall.
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MAINTENANCE