Dometic 2500 Instrukcja Użytkownika Pobierz pdf (Strona 11)

With a pair of pliers unfold the lug holding the lid of the boiler

casing and open the lid

Remove some insulation wool so that the heater is accessible

Turn and lift the heater out of its pocket

Fit the new heater into the pocket and pull on the hose around

the leads

Connect the leads and put on the plastic cover

Reset the insulation and close the lid of the boiler casing

The Switch

The electric control also comprises an on-off switch operated by

the selector knob at the front panel. The switch has two “on”-

positions, one for 120 Volts A C (ELEC.) and one for 12 Volts D C

operation.

The Thermostat

The electric thermostat is combined with the gas ther-

mostat and is thus operated by the knob (B) at the front

panel. The temperature in the refrigerator can be

regulated by turning the thermostat knob. Although the

exact setting is not critical choose a setting at which the

frost that gradually forms on the cooling evaporator is

just maintained in dry condition.

It will be necessary to turn the thermostat knob closer to MAX

when the ambient temperature becomes higher or the load

unusually heavy.

If less cooling is required a lower setting should be chosen.

PERIODIC MAINTENANCE

NOTE. Before working on the refrigerator make sure that 120 V

A. C. and optional 12 V D. C. leads are disconnected.

Shutoff gas valve.

The Burner and the Burner Jet

The color of the flame should be clear blue over the slots

of the burner.

Once or twice a year depending on use, it is necessary to

clean and adjust the burner assembly. Proceed as

follows:

1 Loosen screw and remove cover plate for burner

housing.

2 Disconnect lighter cable from the electrode.

3 Loosen burner fixing screw and withdraw burner.

4 Clean burner tube with a brush. Blow with-

compressed air.

5 Unscrew jet and clean with alcohol. Blow with com-

pressed air. Never use a needle or similar instrument

to clean jet.

6 Reassemble.

7 Be careful that the end of the burner fits into the

slot on the bracket.

The slots of the burner must be centrally located under

the boiler tube.

The Electrode

For a proper ignition function it is necessary to keep the electrode

insulation dry and free from dirt. The gap between burner tube

and electrode shall be max.

3/16”

(5 mm) and min.

1/8"

(3 mm).

WARNING

If the refrigerator is used intermittently it should be checked at

least once a year.

It is important to keep the appliance area clear and free from

combustible materials, gasoline and other flammable vapors

and liquides. Check the venting system. The flow of combustion

and ventilating air must not be obstructed.

Check the flue baffle that it is clean and reasonably free from

soot. Heavy soot formation indicates improper functioning of the

burner. Clean baffle and flue. Further, clean cooling unit and floor

under refrigerator.

The entire gas installation should be checked for leaks at

intervals. Test all pipe connections with a soap and water

solution, not with an open flame.

NOTE:

Any service of the gas controls, with exception of

above mentioned replacement, maintenance and clean-

ing operations must be performed by an authorized ser-

vice center only.

Note: Avoid water spraying through the

refrigerators vents while washing your RV.

FAULT TRACING

The refrigerator does not freeze

satisfactorily

Causes and remedies

Jet orifice clogged. Unscrew jet and blow clear or wash in

alcohol. Do not use wire or pin to clean orifice.

Check the leveling of the refrigerator.

Flame has gone out. Remedy: 1) Gas in bottle is us-

ed up. 2) Tip of the thermocouple is not heated

enough by flame.

3) Clogged by-pass screw

clean or exchange it.

Air circulation around cooling unit is restricted. Be sure that

refrigerator is properly ventilated.

The evaporator is heavily coated with frost. Defrost.

Flue baffle not inserted into the central tube of the cooling

unit.

The thermostat is incorrectly used. See paragraph on ther-

mostat. In hot weather the setting should be closer to MAX

than usual.

Gauze in burner head clogged. Clean.

Burner damaged. Replace.

Burner may be dislocated. Relocate.

Wrong gas pressure at the burner. Have pressure checked at

burner and at gas bottle. Pressure at burner must not fall

below 11

”

W.G. when thermostat is set on MAX.

ODOR FROM FUMES

Causes and remedies

The flame touches side of the boiler due to dislocation of the

burner. Relocate. Burner dislocation may also cause smoke

and discoloring of walls and ceiling.

Burner damaged. Replace.

The flame touches flue baffle. Remedy: 1) Burner damaged.

Replace. 2) Flue baffle too low. Correct the position of the

baffle.

The flue tube is dirty. Clean flue as follows: Cover burner and

jet. Remove flue top and baffle. Clean flue with special flue

brush. Clean baffle before putting back in place.

All the above instructions are to be followed closely. The

refrigerator is quality-guaranteed. However, we are not responsi-

ble for any failures caused by improper adjustments and

unfavorable installation conditions. Contact service point or dis-

tributor service dept. for assistance.

Replacement Parts Suppliers: See cover.

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