DLC-100R WATER DISPENSER SERVICE MANUAL
Contents
1. and storing cold water and also for shunt a temperature sensor is fixed in the cold tank to determine water temperature Hot tank assembly 35 the hot tank contains a heating wire one end of which connects a dry boiling prevention temperature controller to avoid dry boiling a temperature sensor is fixed in the cold tank to determine water temperature Compressor assembly 36 including PTC starter condenser etc containing R134a cool producing medium Tap assembly 46 47 outlet of the water dispenser made of edible grade plastic Defrosting pan 37 receiving water overflowing out of the water glass Separator 4 separate the water from the drinking water bottle Refrigerator chest 28 supply refrigeratory function Decorative panel of the door 30 replaceable and easy cleaning Decorative panel of front carapace 49 replaceable and easy cleaning IV List of Universal and Wear Parts See the exploded view in Attachment 2 Power switch 5 115V 10A plastic tumbler switch Hot tank assembly 35 115V 60Hz 420W insulation cotton temperature sensor and self reset temperature controller are installed in advance Bottle supporter 2 Tap assembly 46 47 inner the water dispenser Connecting tube 14 silica gel Block of protect key press 44 protect the children V Common Failures and Maintenance Methods No Problems Possible reasons Elimination 1 The whole unit fails to Power is not supplied2. Inspect power lead and socket work 2 No water comes out 1 The cold tank or hot tank does 1 Shake the water dispenser gently after the bottle is not discharge air smoothly mounted The tap is broken or tap silica gel 2 Replace the tap falls off 3 Hot water is not hot 96 bimetallic thermostat acts 1 wait for 5 10 minute the Heating wire has poor contact or thermostat will self reset is damaged 2 Inspect or replace the hot tank 4 Cold water is not cold Cooling system is damaged or aging Inspect the system or replace its components See Attachment 3 5 Water leakage at the The tap is broken Replace the tap tap 6 Water leakage inside The sealing ring of cold tank 1 Open the upper cover and fix the machine becomes loose The inside pipeline becomes loose or damaged the sealing ring 2 Inspect or replace the inside silica gel tube VI Cautions 1 Wait for 5 10 minute after the 96 bimetallic thermostat acts It will self reset If multiple false prevention actions happen to the same machine confirm whether the 96 bimetallic thermostat causes greater errors It is required to replace the manual reset temperature controller 2 Incase water leakage failure to reset or component rupture happen to the tap replace the entire tap without repairing it 3 In maintenance or cleaning be sure not to pull the sealing ring off the cold tank If it g
3. S N DLC100RO01 DLC 100R WATER DISPENSER SERVICE MANUAL Prepared By Water Dispenser Development Dept NOV 2004 DIRECTORY 1 Working Principle sccccvessessaictencseeisensnies 6s eA en at ev ee ee eee ees 1 2 Main Technical Parameters iiion ii sents depvcuseaes E ENE euladersvedvies roar 1 3 Main Components and Their Functions sesssesesesssessresseesstesseesreeseeesstssesseesseessressressresseese 1 4 List of Universal and Wear Parts cece esesccsscsseesecseceseesecseeseceseeseeeceseesecseseesesessesseeeeseaees 2 5 Common Failures and Maintenance Methods cece sseeeecseceseesecseceecesesseseeceseesesseeeeeeaees 2 Ge Cautions NE E eederieleenedntesd eibliieed iesde cad desi eteed aultndstisteealtesloiest anlelaelees 3 7 Attachment 1 Wiring Principle Diagram cecceccceesceeseeeeseeeeseeeeeneceseeeesesesseeeseeesseeenes 4 8 Attachment2 Exploded View ctsiccv c sccidisitesdiesdevdiateuetvent A E E 5 9 Attachment 3 Compressor Working Principle and Failure Analysis e0eee I Working principle The water dispenser is a kind of device which provides bottled drinking water distilled water pure water mineral water etc or daily life water treated through purification equipment to people for drinking after being heated cooled or at its original water temperature Diversion and shunt functions through the effect of atmospheric pressure guide 3 gallons or 5 gallons of commercial water co
4. ets loose repair it in due course Attachment 1 Water Dispenser Wiring Principle Diagram Attachment 2 Water Dispenser Exploded View Attachment 3 Compressor Working Principle and Failure Analysis Brief outline of compressor cooling working principle The water dispenser compressor cooling system mainly includes compressor condenser filter evaporator capillary and other components Drying filter gt Capillary gt e Condenser Compressor The water dispenser adopts a rotary compressor filled with cool producing medium R134a R134a gas is by the compressor compressed into high pressure gas goes into the condenser and then becomes high pressure liquid After being filtered by the drying filter the liquid has its pressure reduced through the capillary and then enters the evaporator Because the evaporator has much larger volume than that of the capillary liquid freon will absorb a great deal of heat from outside to become gas and finally returns to the compressor forming the closed circulatory system Compressor common failures and their maintenance methods Because the compressor and electrical machine are b
5. he body respectively If the resistance between any one of the terminals and the ground is zero the winding is short circuited Winding short with an ohmmeter or a multimeter measure the insulation resistance between any two windings If the insulation resistance is too low the windings are short circuited HI Compressor Shaft Seizing and Cylinder Blocking Compressor shaft seizing and cylinder blocking mean that broken in surfaces of moving parts hug each other and can no longer run which are caused by bad lubricating parts oil cut off or blocked oil circuits Troubleshooting disassemble the compressor to determine where the failure takes place In the case of shaft seizing knock on the seized surface or counterbalance with a wood stick or a copper rod If it moves slightly that would be good and otherwise replace the compressor
6. ntained in a large bottle through the bottle supporter into their tanks respectively to realize the purpose of auto provision and supplementation of water Heating function guide the water into a stainless tank of about 1 5L heat the water and automatically maintain it at above 90 by means of a built in 420W heating tube automatically controlled by a92 temperature controller for instant use Cooling function through a complete set of compressor condenser evaporator system the compressor cool the pure water inside the cool tank by using R134a as the cooling medium Under the auto control of the temperature controller keep the temperature of water and refrigerator below 10 for instant use II Main Technical Parameters Surrounding Power Supply 115V 60Hz 10 38 Temperature Relative humidity 0454 75 Height above sea level Less than 1000m Ability to prepare hot Heating power 420W 5L h water i Ability to prepare cold Cooling power 100W 1L h water In the ambient air there is no flammable explosive and corrosive gas and Service conditions conducting dust and no strenuous shock HI Main Components and Their Functions Here we introduce the water dispenser s major components and their functions for the drawings see Attachment 2 Bottle supporter 2 a bottle head is connected to support the drinking water bottle Cold tank assembly 6 the cold tank is used for preparing
7. oth sealed there are a suction pipe and a exhaust pipe but no cut off valve on the body and capillary throttle is utilized the compressor may also fail to work or cause the electrical machine to be burned when the electrical machine s cooling conditions become worse or failures happen in the system Below are some methods for judgment and maintenance of common compressor failures I Methods for Compressor Maintenance l The single hermetic compressor has three terminals on the body R primary coil or moving coil S starting coil C public point Judgment of compressor exhaust pipe oil vent Generally little oil discharges from a hermetic compressor If oil is found to drip from the exhaust pipe continuously it is shown that the compressor is discharging too much oil Over oil discharge is mainly because that the clearance between cylinder and piston exceeds more than 1 5 times the stipulated maximum fit clearance In this case disassemble the compressor and inspect the fit clearance between cylinder and piston If it is out of tolerance utilize a new piston II Judgment of Compressor Electrical Machine Burning l Winding turnoff detect the three winding by using an ohmmeter or a multimeter If the resistance between any two windings is infinite turnoff happens Winding earthing with a multimeter at low resistance level measure between the three terminals from the hermetic compressor and the copper pipes out of t
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