United States

SALES OFFICESDOMETIC SALES CORP.2320 Industrial Pkwy.Elkhart, IN 46515Phone 219-295-5228

DOMETIC SALES CORP.14441 Bonelli St.City of industry, CA 91746Phone 818-968-9431

DOMETIC SALES CORP.

1625-A Rock Mountain Blvd.Stone Mountain, GA 30083Phone 404-493-6214

DOMETIC SALES CORP.

7895 SW. Hunziker Rd.Portland, OR 97223Phone 503-620-9510

DOMETIC SALES CORP.

2920 Avenue “E” EastAlington, TX 76011

- P h o n e 817-277-72 1

DOMETIC SALES CORP.

East Oak Ridge Dr.Rt. 9, Box I7 AHagerstown, MD 21740Phone 301-797-0826

CanadaEuroclean Canada Inc.

Dometic Recreation Division866 Langs DriveCambridge, OntarioN3H 2N7 Canada(519) 653-8880

Edition 1

Publication No.5415-E I Service

DSC #650

etic1

1

RM360 RM460

RM660 RM760

REFRIGERATOR

, RM360S E R V I C E M A N U A L RM460

RM660 RM760

Diagnostic Service Manuals

2

Installation page 3

Instructions for use page 6

Cabinet adjustments

To change door panel

page 8

page 8

Panel dimensions page 8

Replacement of door gasket page 9

Reversing outer door page 9

Replacement of evaporator dooron RM360/460/660 page 9

Replacement of evaporator doorgasket on RM360/460/660 page 10

The absorption cooling unit page 10

Operation analysis for cooling unit page 10

Cooling unit replacement RM360/460/660 page 11

Cooling unit replacement RM760 page 12

The gas/electric equipment page 13

Replacement of gas/electricequipment complete page 14

Disassembly of gas/electric equipment page 14

Disassembly of burner jet and burner page 15

Operation analysis for LP gas refrigerators - p a g e 1 5

Operation analysis for refrigeratorsoperating on electricity page 16

Wiring diagrams page 17-18

3

INSTALLATION ELECTRICAL CONNECTION

GENERAL INSTRUCTIONS 115 Volts A C

The refrigerators outlined hereon have been de-sign certified under ANS Z 21.19 Refrigeratorsby the American Gas Association for installationin a mobile home or recreational vehicle and areapproved by the Canadian Gas Association. Thecertifications are, however, contingent on theinstallation being made in accordance with thefollowing instructions.

The installation must in the USA conform with:

The refrigerator is equipped with a threeprong (grounded) plug for protection againstshock hazard and should be plugged directlyinto a properly grounded three prong recept-acle. Do not cut or remove the groundingprong from this plug. The cord should berouted to avoid coming in contact with theburner cover, flue cover or other hot com-ponents.

12 Volts VDC optional for certain models1. National Fuel Gas Code Z223.1-19742. Mobile Homes A119.1-19723. Recreational Vehicles A119.2-1970

The unit must be electrically grounded in accor-dance with the National Electrical Code ANSI, CI-1968, when installed if an external alternatingcurrent electrical source is utilized.

4. Any applicable local code

On "Tri-Pover units there is an additionalterminal block marked "12 V". The refrigera-tor must be connected to the battery circuitwith two wires of adequate capacity to avoidvoltage drop. The wire gage should be chosenwith consideration to the wire length inaccordance with the following tabel: The 12 Vcircuit must be fused with an appropriatefuse.

In Canada TABLE

1. Standard CGA lO.l/CSA 2240.4 gas equippedmobile housing and recreational vehicles

2. Standard CSA Z240.6.1 electrical requirements

Maximum two conductor wire length for differentAWG numbers.

for mobile housing Maximum two conductor wire length in feet3. Standard CSA Z240.6.2/C22.2 No 148 electrical

requirements for recreational vehicles AWG

Ventilation

The installation shall be made in such a manneras to separate the combustion system from theliving space of the mobile home or recreationalvehicle. Openings for air supply or for ventingof combustion products shall have a minimum di-mension of not less than l/4 inch.

14 1012 1710 278 436 694 110

Proper installation requires one lower fresh airintake and one upper exhaust vent. The ventila-tion kits shown in this instruction booklet havebeen certified for use with the refrigerator mo-dels listed in the tables. The ventilation kitsmust be installed and used without modification.An opening towards the outside at floor level inthe refrigerator compartment must be provided forventilation of heavier-than-air fuel gases. Thelower vent of the recommended kits is providedwith proper size opening.For ready serviceability of the burner and con-trol manifold parts of the refrigerator the lowerside vent is fitted with a lift-out panel whichprovides an adequate access opening.

Do not use the body or chassis of thevehicle as a substitute for either of the twoconductors. No other electrical equipmentor lighting should be connected to the re-frigerator circuit. The refrigerator will drawfrom l0-21 Amps at 12 Volt depending on model.

CAUTION

Do not operate the refrigerator on 12 Volt whenthe vehicle is parked. You will run out ofbattery in a rather short time.

GAS CONNECTION

Hook-up to the gas supply line is accomplish-ed at the manual gas valve, which is furnish-ed with a 3/8" SAE (UNF 5/8"-18) male flareconnection. All completed connections shouldbe checked for leaks with soapy water.The gas supply system must incorporate apressure regulator to maintain a supply pres-sure of not more than 11 inches water gage. F i g . 1

RM360120w

RM460 RM660 RM760135w 175w 250W

9 7 515 12 825 19 1340 31 2264 49 34

102 79 55

4

If possible the installation of a 12 Voltoperated refrigerator should be completed witha relay mounted either in the car or in therecreational vehicle (see Fig. 1). This relaywill automatically cut out the refrigeratorwhen the car motor is stopped.

SPECIAL HINTS

The refrigerator must be installed in a sub-stantial enclosure and must be level. A spiritlevel is supplied with each refrigerator andby placing it in the freezer compartment onecan level the refrigerator both ways front toback and side to side. When installing the re-frigerator in the enclosure care should betaken to ensure a complete sealing between thefront frame of the refrigerator and the top,sides and bottom of the enclosure. For thispurpose a length of sealing strip is applied to the rear surfaces of the front frame.A sealing strip should also be applied to theforemost floor of the enclosure as shown inFig. 2.

Be careful not to damage the sealing stripapplied to the floor of the enclosure when therefrigerator must be blocked. The heat producedat the rear of the refrigerator will otherwisebecome trapped in this space making the top ofthe refrigerator hot and reducing the effi-ciency of the refrigerator.

CERTIFIED INSTALLATION

Certified installations require one roof ventand one lower side vent or as optional oneupper vent and one lower side vent. The twoalternatives are provided for by using thedifferent kits listed in the Appendix.

For further information contact your dealeror distributor.

METHODS OF INSTALLATION

The methods of installation are shown infigures 3 and 4. It is essential that allmaximum or minimum dimensions are strictlymaintained as the performance of the refrige-rator is dependent on an adequate flow ofair over the rear of the refrigerator.

VENTILATION HEIGHTS

Refrige-rator

Minimum ventilation heights in inches

RM360 37 31RM460 34RM660 42RM760 56

M i n i m u m ventilationheight

Fig.3

Ventilationarea 5"x 18”

5

CLEARANCES

Minimum clearances in inches to combustiblematerials are:

G : Top 0K: Side 0L: Bottom 0M: Rear 1

Clearance M between the rear-most part of therefrigerator and the wall behind the refrige-rator.Clearance N on top of the condenser is relatedto the minimum ventilation height.See Fig. 5 and examples below.

Fig.5

MEASUREMENTS

Distance

Refrigerator Overall Installation Recessbetween top

dimensions dimensions dimensionsof condenser

model to top of

Height Width Depth Height Width Depth Height Width Depthrefrigerator

A B C h W d H W D e

RM360 30 3/8 21 11/16 22 1/16 29 9/16 20 1/4 20 3/16 29 3/4 20 1/2 21 3/16 1 1/4RM460 32 15/16 23 24 11/16 32 1/8 21 9/16 22 3/4 32 5/16 21 13/16 23 3/4 1 1/4RM660 40 13/16 23 24 11/16 40 21 9/16 22 3/4 40 3/16 21 13/16 23 3/4 1 1/4RM760 52 23 24 11/1 51 3/16 21 9/16 22 3/4 51 3/8 21 13/16 23 3/4 1/8

Storane volumes

Refrigerator Total storage volume in cu ftmodel

RM360 3.0RM460 3.9RM660 5.1RM760 6.0

EXAMPLES

The clearance N for the RM360 model is derivedin the following way:at

A. Installation with upper and lower side vents.N=Minimum ventilation height 37 minus in-stallation height 29 9/16 plus distancebetween condenser top and refrigerator top1 l/4N=37-29 9/16+1 l/4=8 11/16.

B. Installation with roof vent and lower sidevent.N=Minimum ventilation height 31 minus in-stallation height 29 9/16 plus distancebetween condenser top and refrigerator top1 l/4 plus distance between roof surfaceand roof vent cap 5 l/4.N=31-29 9/16+1 l/4+5 l/4=7 15/16. Fig.6

6

INSTRUCTIONS FOR USE

INSTALLATION OF THE REFRIGERATOR IN A VEHICLE

The refrigerator must be installed on a solidfloor and must be level. With the vehicle care-fully leveled the refrigerator should level bothways in the freezer compartment.Free air circulation over the fins of the coolingunit is essential. Clearances around the refrige-rator should be in accordance with the labelattached to the rear plate of the refrigerator.In case detailed instructions on the installationand connection to the gas supply are required,contact your dealer or distributor.

Leveling

In the boiler ammonia vapor is distilled from anammonia-water mixture and carried to the finnedcondenser, where it liquifies. The liquid flowsto the evaporator, where it creates cold byevaporating into a circulating flow of hydrogengas. If the evaporator coil is not level theliquid readily accumulates, forming pocketswhich can impair the gas circulation or evenblock it, in which case, of course, the coolingwill stop.When the recreational vehicle is stationary itmust be leveled to be comfortable to live in. Ifthe refrigerator is properly installed, i e thefreezer shelf parallel to the floor, the refrige-rator will then also perform well.A bubble level should be placed on the freezershelf. When the vehicle is on tow, the continuousrolling and pitching movement will not affectthe refrigerator as long as the movement passeseither side of level, but when the trailer istemporarily parked this sensitivity of the re-frigerator should be remembered. So, once more,before you start the refrigerator, make sureit is level.

HOW TO START THE REFRIGERATOR.

4. After the gas is lit keep the button C pushedfor 10 seconds. Release the button and checkthrough the reflector that the burner flamestays burning. If not repeat the lighting pro-cedure.

NOTE: After a replacement of the gas con-tainer or a long shut off period the gasline is likely to be filled with air. Insuch a case the lighting procedure hasto be repeated until the air is pushedout of the line and the gas has reachedthe burner.

Flame Blow Out

If trouble is encountered with the flame blowingout under specially windy conditions, try toavoid the wind blowing against the wall wherevent outlets are located. If the trouble persists,set the thermostat to MAX. This later measurecan of course only be temporary such as when thevehicle is on tow, for after a day or so at thissetting the foodstuffs in the cabinet will freeze.

Electric Operation (Fig. 7)

1.

2.

3.

Check that the attachment plug is correctlyconnected to the mains supply. When the re-frigerator is equipped also for 12 Volts D Coperation the low voltage connection is madeat the marked terminals at the rear of the re-frigerator.Turn the knob A to desired position for electricoperation.Turn the thermostat knob B to setting 4.

HOW TO USE THE REFRIGERATOR

Food Storage Compartment

The food storage compartment is completely closedand unventilated, which is necessary to maintainthe required low temperature for food storage.Consequently foods having a strong odor or liableto absorb odors should be covered. Vegetables,salads etc. should be covered to retain theircrispness. The coldest positions in the refrige-rators are underneath the cooling evaporator andat the bottom of the refrigerator, and the leastcold positions are on the upper door shelves. Thisshould be considered when different types of foodare placed in the refrigerator.

Frozen Food Storage Compartment

Fig.7

Gas Operation(Fig. 7)

The ice trays should be placed in direct contactwith the freezer shelf for fastest ice making.Quick frozen soft fruits and ice cream should beplaced in the coldest part of the compartment,

1. To startposition

2. Turn the3. Push the

D of therepeatedThis can

the refrigerator turn the knob A to"GAS".thermostat knob B to setting 4.button C to stop and push the buttonpiezo igniter. The pushing has to beuntil the gas is lit at the burner.be observed through the reflector E. precooled in the refrigerator, can however, also

which is at the bottom of the aluminum liner or,in models with a shelf, on this or just below it.Frozen vegetables, on the other hand, may bestored in any part of the compartment.The compartment is not designed for the deep orquick freezing of foodstuffs. Meat or fish foods,whether raw or prepared, and provided they are

7

be stored in the frozen food storage compartment.They can then be stored about three times aslong as in the fresh food storage compartment.To prevent drying out, keep food in covereddishes, in plastic bags or wrapped in aluminumfoil.

CAUTION

Do not store explosive substances in the re-frigerator, such as cigarette lighter gas,petrol, ether or the like.

Ice Making

Ice cubes can be made in the ice trays whichshould be filled with water to within l/4"(5 nun) from the top. To release the ice cubesseize the tray with both hands and twist thetray. Cubes not required should preferablybe replaced in the tray. Refill the tray withwater and replace the tray on the freezershelf.Ice making is accelerated if the thermostatknob is turned to setting "MAX". It is a goodidea to do this a few hours before an anti-cipated need for ice but be sure to turn theknob back to normal setting when the ice isformed or the foodstuffs in the cabinet maybecome frozen hard.

Defrosting

Some refrigerator models are equipped with anautomatic defrosting device incorporated withthe cooling unit. This device makes a quickdefrost of the finned evaporator section aboutonce a day without affecting the frozen foodstorage compartment or the frozen foods containedin. When the frozen food storage 'compartment iscovered with frost the refrigerator must be shutdown temporarily till the frost is melted. Beforethe refrigerator is restarted the compartmentshould be dried, the ice trays washed and re-filled with fresh water.When the frost on the finned evaporator sectionhas melted, water will be collected in the driptray. The drip tray should be emptied at regularintervals.Some refrigerators without the automatic de-frosting device should be defrosted regularly'by turning off the refrigerator. Empty the re-frigerator leaving the drip tray under the finnedevaporator and the cabinet and freezer doorsopen. If desired, defrosting may be speeded upby filling the ice tray with hot water andplacing it in the freezer.When all frost is melted, empty the drip tray anddry the interior of the refrigerator with aclean cloth.Replace the drip tray and ice tray, replace allfood stuffs and set the thermostat to "MAX" fora few hours. Then reset the thermostat knob toits normal position.

To Shut Down the Refrigerator

To shut down the refrigerator temporarily setthe thermostat to off and turn off the gas tap.If the cabinet is not in operation over a period

of weeks, it should be emptied and cleaned andthe door left ajar. The ice trays should alsobe dried and kept outside the cabinet.

Cleaning

To clean the interior lining of the refrigeratoruse lukewarm weak soda solution. The evaporator,ice trays and shelves must, however, be cleanedwith warm water only. Never use strong chemicalsor abrasives to clean these parts or the pro-tective surface will be spoiled. It is importantalways to keep the refrigerator clean.

Periodic maintenance

NOTE: Before working on the refrigerator, makesure that 110 V A. C. and optional 12 VD.C.leads are disconnected.

Once or twice a year depending on use, it isnecessary to clean and adjust the burner assembly.Proceed as follows:

1.

2.3.4.

5.

6.7.

8.9.

Loosen screw and remove cover plate for burnerhousing.Disconnect lighter cable from the electrode.Loosen burner fixing screw and withdraw burner.Clean burner tube with a brush. Blow withcompressed air.Screw off jet and clean with alcohol. Blowwith compressed air. Never use a needle orsimilar.Clean flue baffle and flue.Clean the cooling unit and the floor under therefrigerator.Reassemble.The entire gas installation should be checkedfor leaks. Test all pipe connections withsoapy water, not with an open flame.

a

CABINET ADJUSTMENTS

To change door panel

The refrigerator is normally delivered without doorpanel(s). Before starting the mounting work checkthat the panel dimensions are in compliance withthose given in the table and read the instructionsthrough. When mounting the panel, proceed as follows:

1.

2.

3.

4.

5.

6.

Remove the top decoration strip (2) withtwo screws (1).

its

Insert one of the vertical edges of the panelinto the groove of the door frame (3).

Bend the panel gently so that the free side ofthe panel can be slipped into the correspondinggroove of the door frame (4).

Push the panel downwards so that the lower hori-zontal edge of the panel is fitted into thebottom groove (5).

Between the upper edge of the panel and the doorframe there is now a gap which should be coveredby the decoration strip.

Put the strip across the door so that the gapis covered and push it upwards (6).The tabs on the inside of the strip should fitin behind the flange of the door frame. Securethe decoration strip by means of the two screws (1).

Panel dimensionsThickness max. 5/32"

Height WidthType Max. Min. Max. Min.

RM 360 636 633 516,5 513,5 m m25" 24 7/8" 20 11/32" 20 7/32"inch

RM 460 679 67626 23/32"

550,5 547,526 19/32" 21 11/16" 21

RM 660 879 876 550,5 547,5 m m34 5/8" 34 l/2" 21 11/16" 21 9/16"inch

RM 760 288 285 550,5 547,5 m mupper 11 11/32" 11 7/32" 21 11/16" 21 9/16"inch

RM 760 801 798 550,5 547,5 m mlower 31 17/32" 31 13/32" 21 11/16" 21 9/16"inch

Fig.8

9

Replacement of door gasket (Fig. 9)

1. Pull the old gasket out from the door frame.2. Make sure that no gasket parts are left in

the groove.3. Beginning in one of the corners, fit the new

gasket by pressing it into the groove.

Reversing outer door (Fig. 10)

1. Remove the plastic cover (1) by loosening thescrews (2) underneath.

2. Remove the upper hinge pin (3).3. Remove the door and move the lower hinge pin (4)

to the other side.4. Fit the door and press the upper hinge pin

(3) into the adequate hole.

For two-door refrigerators the middle hinge andthe travel latch should change position.

Replacement of evaporator door on RM360,RM460, RM660 (Fig. 11 and 12)

1.

2.

3.

4.

5.

Pry the spring housings (B) away from the li-ning so that it snaps out and turn the springhousing downwards

Push the carrier (A) inwards by means of ablunt mandrel or pin and remove the shutter.

Mount the new shutter in close position firston one side, making sure that the cross slotsengage in the cross on the hinge plate (C).

Press the carrier on the opposite side so thatthe hinge plate on the shutter can be pushedover it. See that the crosses engage.

Turn the spring housing round and up until thesmall tag (D) snaps into the slot into thelining.

Fig.9

Fig.10

Fig.11 Fig.12

Replacement of evaporator door gasket on RM360,RM460, RM660

1. Remove the door as previously described.

2. Unscrew the hinge plates (A fig. 13).

3. Put shutter on a flat surface with the sealinggasket up.

4. Pry the shutter front away from the innerpan by means of a screwdriver.

CAUTION: It is of great importance that thescrew driwer is applied in front of one ofthe plastic tongues (B fig. 13) which holdthe inner panel and the shutter front to-gether.

5. Replace the sealing gasket round the in-ner panel and snap the inner panel withsealing gasket into the shutter frontuntil the tongues snap in position.

6. Mount the shutter as described above.

Fig.13

THE ABSORPTION COOLING UNIT

Sealed system construction

The sealed system of the absorption refrigerator If an excessive vaporizing of the ammonia within theis constructed of welded steel piping which con- boiler occurs due to the reasons above, the liquidtains the refrigerant charge. The charge consists mixture in the boiler becomes very weak and the pumpof ammonia, hydrogen and water. There are no mo- will cease to operate, which means that the circula-ving parts associated with the absorption system. tion of liquid stops with the result that the eva-

porator inside the cabinet ceases to produce coo-ling.

When servicing an absorption system refrigerator, Such a blockage of the unit in the liquid circuitdo not puncture or break the piping. Should a ist most usually made evident by signs of overhea-break occur and ammonia contact the skin, wash the ting on the vapour pipe leading from the boiler toaffected area immediately with clear water. Do not the condenser, the paint on this pipe being bliste-attempt to open the valve on the absorber vessel. red and the metal becoming discouloured.The valve is covered with a plastic can and shouldnever be removed. To remedy this fault it is recommended to remove the

OPERATION ANALYSIS FOR COOLING UNIT

It is obviously important that all external fac-tors affecting the unit should be checked properlybefore a unit is condemned as faulty and that empha-sis has been placed upon the necessity for correctinstallation, upright refrigerator, correct heat in-put, baffle position, etc. Check the size and thewattage of the electric heater and make sure thatthe heater element is inserted to its full lengthin its pocket. If the electric heater is only part-ly inserted, the heat distribution will be incorrect,causing an excessive vaporizing of the ammonia withinthe boiler when operating on electricity. The samesymptom can show up with too much or too little

unit or refrigerator complete whenever possible andto allow sufficient time to- cool down the unit. Turnthe unit or refrigerator upside down several times,so that the liquid in the absorber vessel can bemixed with the liquid in the boiler. This procedurewill restore the liquid balance to the unit.

The temperatures on various parts of a unit varycontinuously when it is operating on thermostaticcontrol and it is impossible to base a judgment onthe symptoms given unless the refrigerator has beenoperating continuously on fully correct heat inputfor at least 5 hours, and preferably 12 hours, priorto examination. In many cases this can be arrangedby a telephone call to the customer, asking him toswitch the thermostat to "MAX" on the day before the

heat input either on electric or on gas operation inspection call. If after 12 hours' operation onand also if the refrigerator had been operating in "MAX" the performance is satisfactory, the unit isan off-level position or with inadequate ventila- not at fault unless the complaint is one of varyingtion. or intermittent performance. In this connection

11

the room temperature at the time of the complaint Unit filling valvemust be considered, as a unit which is satisfactoryatbe

an ambient temperature may notsatisfactory at 95 F (+35 C).

cases where satisfactory performance is obtained"MAX" but not on other settings, the thermostatto be suspected.

The needle valve used for admitting the fillingcharge to a cooling unit is fitted to the unit'sabsorber vessel and is covered by an aluminium orplastic cap. It is strictly applied provision ofthe warranty extended on the unit to the customer,that any interference with the filling valve willautomatically void the warranty.

In

is

When a normal unit is working on "MAX" the absorbercoil will be warmer at the bottom than it is at the Unsatisfactory unit performance due to an ammoniatop. The absorber vessel will be warmer. The vapour leak can be determined in the case of a visiblecooling pipe from the boiler to the condenser will leak by traces of a yellow deposit at the pointbe warm, bearably to the hand, at the bend where where the ammonia is escaping. If there is a leakit joins the condenser, with a gradual rise in tem- on the evaporator inside the cabinet, a smell ofperature towards the boiler end. ammonia may bee noticeable.

COOLING UNIT REPLACEMENT RM360, RM460, RM660

Remove the refrigerator from its recess as follows

1. Check that refrigerator is empty and removeice tray.

2. Turn off gas bottle.

3. Disconnect gas line to inlet valve

CAUTION: Use a backup wrench to preventundue rotation.

4. Unplug the electric line from the traileroutlet.

5. Remove the 4 screws in rear front frame.

6. Check for any additional screws which thevehicle manufacturer may have used tofasten the refrigerator in place.

7. Carefully slide the refrigerator straightout of its recess.

To remove the cooling unit from the cabinet,proceed as follows:

1. Place the refrigerator on a work bench ofsuitable height.

2. Remove the thermostat capillary tube byloosening the two screws (1) on the eva-porator fins (fig. 14).

CAUTION: The locations of the thermostatcapillary tube should be noted at thistime for relocation later on. The tubesmust be placed in the right position,otherwise, improper performance may re-sult.

3. Remove the two sealing plugs for capillarytube, one on the back and one inside thecabinet, and straighten the tubes.

4. Remove the capillary tubes by going to theback of the refrigerator and gently pullingthe tubes straight out.

Fig.14

Fig.15

- 6

12

5.

6.

7.

8.

9.

10.

11.

12.

Remove the screws (2) in fig. 14 and take away theevaporator fin. Remove the screws (3).

Remove the connection block (4) cover (Fig. 15) and dis-connect the electrical wires for the heaters.

Remove the grounding screw (5).(Fig. 15).

Remove the flue and the flue baffle.

Remove the screws (6), holding the absorption unitonto the back of the cabinet.

Disconnect the burner case by turning the lever(7) as shown in the picture.

Carefully bend absorption unit out of cabinet(Use a crowbar or similar and a wooden piece asprotection when doing this).

To replace absorption unit, reverse above procedure.

CAUTION:

1. Be sure to apply sealing permagum (8) on theunit mounting plate (Fig. 16).

2. Be sure to apply proper amount of "Thermal Mas-tic" on the evaporator coil (9).

3. When fitting the evaporator fin be sure to tightenthe screws properly in order to obtain a perfectcontact between the evaporator coil and evapora-tor flange, otherwise improper cabinet performancemay result.

COOLING UNIT REPLACEMENT RM760

The following steps are different from the models RM360,RM460 and RM660.

8 9

1. The screws (1) in the freezer should be removed (Fig. 18)

2. The capillary tube should carefully be pulledout from the tube (2).(Fig. 19).

3. When bending the cooling unit out, place the crowbaror similar as well as the wooden protection as shownin the picture.

Fig.16 Fig.17

Fig.18

Fig.19

13

THE GAS/ELECTRIC EQUIPMENT

Gas equipment parts

1. Burner tube2. Burner, housing3. Jet4. Feeler point thermocouple)5. Flame failure safety device6. Bypass screw7. Gas/Electric thermostat8. Pressure test gage connection9. Capillary tube for thermostat

10. Shut-off value11. Piezo igniter12. Firing tip13. Flue baffle

Fig.20

Electric equipment parts

14. Flexible cord15. Change-over switch16. Terminal block, 12 VDC17. Fuse18. Relay19. Heater

14

Replacement of gas/electric equipment complete

1. Remove the covers by removing the screws (1).

2. Disconnect the heater cords at the terminalblocks (note the locations for later relocation).

3. Remove the capillary tube carefully from theevaporator.

4. Remove the screws (2).

5. Release the burner housing from the flue byturning the lever (3) as shown.

6. Pull the equipment out from the cabinet.

Fig.21

115v 220v240v

_12V

Disassembly of gas electric/equipment

1.

2.

3.

4.

5.

6.

7.

Press the plastic latch (leftwardsin Fig. 22).

Pull the relay out (if any).

Snap off the fuse holder.

Press the spring.

Pull the shut-off valve out.

Press the gas/electric thermostat left-wards and lift it out.

Unscrew the thermocouple from the flamefailure safety device.

8. Press the retaining spring for release ofthermocouple.

9. Pull out the thermocouple leftwards.

10. Pull the flame failure safety device leftand lift it out.

11. Pull off the ignition cord.

12. Snap off the retaining spring.

13. Pull out the igniter.

NOTE: When assembling, always use new O-rings

for the joints.

2 Fig.22

15

DISASSEMBLY OF BURNER JET AND BURNER

1. Remove the cover by removing the screw (1).

2 . Unscrew the burner jet (2).

3. Remove the burner by removing the screw (3)

OPERATION ANALYSIS FOR LP GAS REFRIGERATORS

S Y M P T O M C A U S E

Note: It will be noted in this tabulation that 8 8 several causes can be responsible for the one

8 effect. The real cause or causes should be de-

termined by a process of elimination, investi-

gation each possible cause. proceeding to the

bottom.

x Gas leaks

Fig.24

16

OPERATION ANALYSIS FOR REFRIGERATORS OPERATING ON ELECTRICITY

rS Y M P T O M

-

--

X-

-

-

X

--X-

-x-X-X-X-

-

X-X-X-

-X-

-

-

-

-

X-

X-

-

-

-X-X-X-X-X-X-X-X--X-----X-X--

-

------

--X-

X-

-

X-

-

-

-

-

-----------X-X-X-----

C A U S E

Note: It will be noted in this tabulation that

several causes can be responsible for the one

effect. The real cause or causes should be deter-

mined by a process of elimination, investigating

each possible cause, starting at the top of the

tabulation and proceeding to the bottom.

Not adequate ventilation

Refrigerating unit not level

Heater faulty,wrong voltage or type

Voltage not constant

Electric connections loose

Heater not inserted correctly in its pocket

Improper food storage

The thermostat incorrectly used

Improper storage of liquids and moist foods

Leaky cabinet seals

Infrequent cleaning of food compartment

Refrigerator shut off with closed door

Unwrapped odorous food

Incomplete contact of thermostat capillary tube

Lost thermostat charge

Failed refrigerating unit

Room temperature too low

1 7

200 7 3 9 0 12VOLTS DC

12VOLTS DC

NL 115 VOLTS AC

THERMOS TAT JUNCTION BLOCK

TERMINAL BLOCK

GREEN GREEN/YELLOW

Fig.25 Wiring Diagram for Product No. 926 63 01RM760

115VOLTS AC

Fig.26 Wiring Diagram for Product No. 926 63 02RM760

18

20075871115VOLTS AC

SWITCH THERMOS TAT B L O C K

W H I T E BLACK GREEN

Fig.27 W i r i n g D i a g r a m f o r Product No. 926 69 01, 926 70 01, 926 71 01RM360 RM460 RM660

115 VOLTS AC

BLACK GREEN GREEN/YEL LO W

- - -

I

SWITCH THERMOSTAT JUNCTION BLOCK HEATER TERMINAL BLOCK FUSE HEATER

Fig.28 Wiring Diagram for Product NO. 92 6 02, 92 7 02, 926 71 02RM360 RM660

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