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Summary of Contents for Midea WHS-185C1
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Page 1: Table Of Contents
Refrigerator Service Manual Model: WHS-185C1 Features • Energy efficiency • Micro foam technology • Low noise operation • Thick insulation for energy efficiency • Latest No. 2 microbiological technology... -
Page 2: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS 1. Table of Contents ..................1 2. Product Code Illumination and Series Introduction ..... 2 3. Specifications ................3 4. Safety Precautions .................. 4 5. Function Schedule ................... 7 6. System Flow Chart .................. 8 7. -
Page 3: Specifications
Specifications Specifications Model WHS-185C1 Capacity 37.5 (gal.) White Color Power Supply 115V/60HZ (V/Hz) Rated Input Power (W) Power Consumption (kWh/Y) Net Weight (lbs.) Gross 70.5 Weight (lbs.) Unit Dimension 29x21x33 (DxWxH) (in.) Packing Dimension 30x21x35 (DxWxH) (in.) Container Quantity 40HQ... -
Page 4: Safety Precautions
Safety Precautions Safety Precautions... - Page 5 Safety Precautions...
- Page 6 Safety Precautions...
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Page 7: Function Schedule
Function Schedule Function Schedule • Energy efficient • Micro foam technology • Low noise operation • Thick insulation for energy efficiency... -
Page 8: System Flow Chart
System Flow Chart System Flow Chart 1. Schematic diagram of System Flow Chart Flow sequence: 123451... -
Page 9: Circuit Diagram
Circuit Diagram Circuit Diagram 1. Schematic Circuit Diagram... -
Page 10: Maintenance Service And Troubleshooting
Maintenance Service and Troubleshooting Maintenance Service and Troubleshooting 1. No cooling No cooling Does compressor Check and repair according to run after turning power "The compressor does not work" chart. off for five minutes and turning back on? Refrigerant is leaking. Check Does compressor and repair. - Page 11 Maintenance Service and Troubleshooting 2. The compressor does not stop Compressor does not stop Does the refrigerator Check and repair according to the refrigerate? "No cooling" chart. Check and repair according to the Is cooling capacity "Cooling capacity is insufficient" insufficient? chart.
- Page 12 Maintenance Service and Troubleshooting 3. Cooling capacity is insufficient Cooling capacity is insufficient. Is the thermostat correct? Is the ambient temperature lower than 60.8°F? Is refrigerant leaking? Adjust and instruct owner how to use. Repair...
- Page 13 Maintenance Service and Troubleshooting 4. The compressor does not work The compressor does not work. Does the refrigerator Is appliance Repair light turn on when the connected to a door is opened? power source? Is the ambient Is the thermostat temperature lower than correct? 60.8°F?
- Page 14 Maintenance Service and Troubleshooting 5. Normal Refrigerator Functions A domestic refrigerator not only does it have a complicated electrical control system, but also a refrigerating system that sometimes makes it difficult to figure out if it is in good working condition. Both systems work in tandem and affect each other.
- Page 15 Maintenance Service and Troubleshooting 6. Common Problems in Refrigerators and Their Remedies Issues occurring in refrigerators are closely related to the quality of their components, the manufacturers’ workmanship, and if they are properly used and maintained. The aspects generally used to gauge the working conditions of a refrigerator include its temperature, operation rate, power consumption, noise level, and other functional indexes.
- Page 16 Maintenance Service and Troubleshooting During compressor’s normal operation, a faint and constant hum due to undulation of electrical current can be heard; this is normal. However, if it sounds like an impact sound inside the compressor, this means that a large quantity of wet saturated vapor of refrigerant or refrigerating oil has entered the compressor cylinder.
- Page 17 Maintenance Service and Troubleshooting instruments or other ways, because several issues may share a common source and several problems may occur simultaneously due to a specific reason. With this method, some suspicious issues can be eliminated and a correct judgment can be reached. 7.
- Page 18 Maintenance Service and Troubleshooting 2. Too much refrigerant charged into the system Analysis of Problem a. If the amount of refrigerant charged into the system exceeds its capacity, the surplus refrigerant will take space in the evaporator, which will reduce its heat-dissipation area and the refrigerating efficiency.
- Page 19 Maintenance Service and Troubleshooting Solution Measure the high and low pressures with pressure gauges to see if they are normal. If an abnormal sound comes from the compressor or the temperature is too high, cut the discharge port open and operate the compressor. With a finger, feel if there is pressure at the discharge port.
- Page 20 Maintenance Service and Troubleshooting a. decrease of gas discharge pressure, b. lower temperature of discharged gas and of the clogged area, and, c. in severe cases, condensation or frosting may appear. Solution Purge tubing and replace the dry filter with a new one or clean it thoroughly. Recharge the system with refrigerant and seal the charging port.
- Page 21 Maintenance Service and Troubleshooting 2. Refrigerating system is clogged with ice Analysis of Problem The expansion valve can become clogged with ice if the moisture is not removed properly from refrigerant system, air purging is done improperly, or the water content in the refrigerant is substandard. The symptoms for this condition are: a.
- Page 22 Maintenance Service and Troubleshooting 4. Clogged filter Analysis of Problem A completely clogged filter rarely happens. When this problem does occur, it is usually caused by a buildup of paste-like matter, dust, or dirt on the filter after the refrigerator has been in use for a long period of time. Sometimes, tapping the filter may remove some of the blockage.
- Page 23 Maintenance Service and Troubleshooting may occur as well. Meanwhile, condensation may occur on the gas return tube, and the gas discharge pressure will rise. When it reaches the maximum value, the protective relay will activate and shut off the compressor. Solution Open the tubing, evacuate, and charge the system with the proper quantity of refrigerant.
- Page 24 Maintenance Service and Troubleshooting 2b. Overload of electric motor Analysis of Problem The motor might stop running if: i. too many items are placed inside the refrigerator, which will cause the thermal load to exceed its refrigerating capacity, or ii. The power supply voltage drops considerably, causing the current flowing through the motor to increase drastically, activating the thermal protector and blowing a fuse.
- Page 25 Maintenance Service and Troubleshooting b. Check the compressor accessories, including its thermal protector and relay. If the thermal protector is damaged, the compressor cannot be powered on. If the relay is out of order, the motor will not run and a humming will sound when the compressor is turned on.
- Page 26 Maintenance Service and Troubleshooting 4b. Faulty control relay Analysis of Problem Overheating, burnouts, and/or wearing of control relay contacts will generally occur. All these will cause poor contact in electricity. Solution Dismantle the control relay to repair or replace it with a new one. 4c.
- Page 27 Maintenance Service and Troubleshooting 2. Temperature is set incorrectly Analysis of Problem The temperature control knob is set to the "coldest" setting. This setting is for fast freezing and can cause continuous running because the temperature for the compressor to power off is too low, so it won't stop running until it reaches the "coldest"...
- Page 28 Maintenance Service and Troubleshooting F. Leakage Current 1. Slight leakage current Electrical insulator has deteriorated due to dampness, thus resulting in a slight leakage current. 2. Serious leakage current Refrigerator has become electrically charged due to an electrical problem or faulty wiring in power cord or outlet. This is extremely dangerous. 3.
- Page 29 Maintenance Service and Troubleshooting 4. Inspection guidelines To find the source(s) of noise, press the vibrating spot while the refrigerator is in operation and listen if the vibration becomes weak or disappears. If the refrigerator has not been levelled, put a leveler on the refrigerators top and adjust the leveling screws.
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