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Danby DPR2262W - Technical Descriptions; Gas Equipment Components; Combination Control Valve Functions; Flame-Failure Device Testing

Danby DPR2262W
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oTum thedrip pan (E2) aroundsoIhat khedrainhereis
towardsthe front and place a suitablecontainerunder it,
to catchlhe runoffofmelting Fce.
Leave the deers open until aqlIhe ice has melted dc_,m
and then remove the container.
Themelt-watertrom Ihe uppercompartmentisdrained
downIhrough(Ed) tothe drippan.
=Washthe componenls withwateranda mirddetergent
and thendrythem.
=Clean _J:,_F_efrigeratctonthe insidewitha damp cloth
and wipeitdry.
= Reassemblethe components,turningthedrippanto ils
normalposition.
If the Refrigerator is net to be used for some length el
lime, _eavethe doors ajar and d'o not reinstall the batteries
inthe lighting assembly.
6.Technicaldescription
Beforegoingintothesubjeels of maintenanceand
koubleshootiag,we wouldliketoprovidea brief
descriptiononlhe fu_lional unitsofthe gas equipment,
whichwillmakefor a better understandingofthese items.
6.1 The gas equipment (Fig. D)
The gasconnector(D14) isconnectedto a manualshut
offvalve (D13),normally"to be left open(handtein
alignmenlwithlhe gasflow).
Thevalve(D13) isconnectedto the combinationcontrol
valve(seefollowingitem) by a union(D15).
If the Refrigeratoristo be remoeedfor maintenanceor the
like,closethevalve and uncoupletheunion.The valvewill
keepthe endoftheconnectorsealed,thus maintaining
thegas supplysystemoperational
ToreconnecttheRelr_gerator,simplyhook-upthe union
again,openthe valveand use detergentto checkfor
leaksat Eneunionandadjoining fittings.The unionshould
notbe overl[ghtened.Tighlenfirm_ withthehand and
thena larther10 or 20 degreeswithanopen-endwrench,
oruntilthereareno leaks.
6.2 Combination control valve (Fig. G)
Theconlrol has severalfunctions.Theinlet (G2) carries
a gumfiller Ioremovecedaincontaminantsfromthe
gas.Alterthelilter comesa se[eolorvalvewithits shaft
(G3) withtwo positions:openorclosed.Usethisto turn
off the Refrigerator,sinceit isnotenoughto turnthe
thermostat(G4)down !o the warmeslposition.
Togetherwiththe selectorcomesthe flame-failure
dark>e,connectedby(GT)to the lhermocouple(H1) at
theburner.II the flameshould gooulfor anyreason, Ibis
willcutoff thegassupplywithinaboulforty seconds,
prevenlinglurther amountsof unbumtgasfrom
escaping.
To tightIha burner, it is necessary to keep the gas supply
open manually, by depressing (G3), until the flame
ignite& Within 3 to 4 seconds,the frame will heat the
thermocouple (H1) enough Io bold the gas passage
open.
6.3. Testing the flame-failure device (Fig. C)
ThedeviceisfaiPsafe:any malfunction,suchas poor
electdccontacl,etc.,willcauseit to close.Even so, it
mustbe checkedlor properoperationwhenthe
Relffgeralorisfirstinstalledandthen periodicallylaleron
(seeunder" PeriodicMaintenance").The follczwingis to
be done',
a) Placethe Refrigeratorin operatlonwithIhethermostat
settothecoldestposilion.
b) CloseandthenimmediatelyopenIha selectorvalve
[c3),
Theflamewil_gooutbulthegassupplywillcontinueto
flow.
c) Listen carefully.In about 30 to 40 seconds you will
hear a slight but very dislinct "c1_c_€'to signify that the
valve hasclosed.
6.4 The thermostatic valve and the bypass
(Fig. G)
Thetemperatureissensedviaa coppercapillarytube
(Gt) risingbehindtheRel_gerator(D3) andw_hthe tip
reachingintoa receplacleon Iheevaporator(El).
Thelemperatureo!the tip andthepositronoftheshaft
(G4) causethepassageotgas tothe bume_toopento a
greateror lesserextenl. Whenreinstallingthe capillary
tube altera repair,makesure that it fits properlyinto the
_eceptacleandcaulkthe cutlet{D2)with sealing
compound,
Evenwhenthethem]esteLlavalveisclosed,a small
amountofgasstill p_ssesIhroughto keep the flame
alightand Ihe Freezercompartmentoperating,
This gas ismeteredbyan orifice[n the bypass screw
(G6).Theorificeis nonadjustableandthe screw
indicatesthecapacity.
05

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