Replacing The Heater - Dometic NEA1402 User Manual

cLEANiNg thE fLUE AND bURNER
Inspect the flue baffle. It should be reasonably clean and free
of soot. Heavy soot formation indicates improper functioning
of the burner.
To clean the flue and burner, follow these steps:
1. Unplug the refrigerator power cord from the 120V
AC outlet.
2. Disconnect/shut off the 12V DC power to the refrig-
erator.
. Turn the manual shutoff valve to OFF.
4. In turn, remove the:
- Cover from the burner housing.
- Burner mounting screw and burner assembly.
- Wire and flue baffle from the top of flue tube.
5. Using a flue brush, clean the flue from the top.
Blowing compressed air into the flue will not prop-
erly clean soot and scale out of the flue tube.
6. Replace the flue baffle.
7. Clean the burner tube with a brush. Blow out the
burner with compressed air.
8. Before removing the burner jet, clean burner area of
soot and scale that fell out of flue tube.
9. Remove the burner jet.
10. Soak the jet in wood alcohol and blow it out with
compressed air.
FIRE HAZARD. Do not use a wire
or pin when cleaning the burner jet
as damage can occur to the precision
opening. Failure to heed this warning
could cause fire resulting in personal
injury.
11. Reinstall and tighten the burner jet.
12. Carefully reinstall the burner. Make sure the end of
the burner fits into the slot on the burner bracket and
that the slots are centered under the flue tube.
1. Check the electrode for proper location and gap.
1/8" to 3/16"
(3-5 mm)
MAiNtENANcE & SERvicE
! WARNING
Electrode
Burner tube
14. Turn on the manual gas shutoff valve. Check all
fittings for leaks with soapy water.
15. Connect the 120V power cord to the outlet.
Reconnect/turn on the 12V DC power.
16. Check the LP gas safety shutoff.

REpLAciNg thE hEAtER

The heat necessary for the operation of an absorption cooling
unit is supplied by an electric heater mounted in a pocket of the
boiler system. The refrigerator is equipped with a series con-
nected twin heater.
To replace the heater, follow these steps:
1. Disconnect 120V AC and 12V DC power.
2. Remove the protection cover.
. Remove the power module cover.
4. Disconnect the heater leads.
5. With a pair of pliers, unfold the lug holding the lid of
the boiler casing and open the lid.
6. Remove some insulation wool so that the heater is
accessible.
7. Turn and lift the heater out of its pocket.
8. Fit the new heater into the pocket.
9. Connect the leads.
10. Put back the power module cover.
11. Put back the insulation wool. Close the lid of the
boiler.
12. Put back the protection cover.
REpLAciNg thE fUSES
powER MoDULE
To replace the fuses, follow these steps:
1. Disconnect 120V AC and 12V DC power.
2. Remove the power module cover.
. Snap the fuse out of the fuse holder.
4. Fit a new fuse in to the fuse holder.
5. Put back the power module cover.
iNLiNE fUSE
The  A inline fuse for the power vent fans is connected to the
12V DC socket. To replace the inline fuse, follow these steps:
1. Disconnect 12V DC power.
2. Open the fuse holder.
. Replace the fuse.
4. Put the holder back together.
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