Frigidaire_Dehumidifier

1. PREFACE

This Service Manual provides various service information, including the mechanical and electrical parts. This dehumidifier was manufactured and assembled under the strict quality control procedures.

The refrigerant is charged at the factory. Be sure to read the safety precaution prior to servicing the unit.

1.1 SAFETY PRECAUTIONS

???Disconnect the power supply before servicing or replacing any component.

???Do not cut off the grounding prong or alter the plug in any manner.

1.2 FEATURES AND DIMENSIONS

1.2.1 FEATURES

???Quiet operation

???High efficiency

???Adjustable humidistat

???Automatic defrost

???Automatic shut-off

???Bucket-full indicator light

???Easy roll casters

???Removable & large capacity bucket.

???Washable air filter

???Two-speed fan

???Drain hose connection.

???Low temperature operation (DH504EL/LD50EL/LD65EL)

1.2.2 DIMENSIONS (mm/in)

540 (21 1/4)

Figure 1

???3???

1.3 MODEL NAMES

1.4 SPECIFICATIONS

MODELS

ITEMS

POWER SUPPLY(Phase,V,Hz) INPUT(W)

RUNNING CURRENT(A) ENERGY FACTOR(L/kw.h)

REFRIGERANT REFRIGERANT CHARGE, oz(g)

OPEN

THERMISTOR CLOSE

SOLENOID VALVE*

COMPRESSOR MODEL No.

PROTECTOR

CAPACITOR

MOTOR ASSEMBLY,SINGLE

SWITCH ASSEMBLY,MICRO

OUTSIDED MENSIONS

WxHxD,mm(in)

NET WEIGHT,kg(lbs)

*NOTE:Specifications are subject to minor change without notice for further improvement.

???4???

1.5 CONTROL TYPE

1.5.1 Mechanical type

Humidity Control

???When you first use the dehumidifier, turn the humidity control to 5 or 6. If you still have moisture, turn the humidity control to a higher setting.

MAX is the highest setting.

???When excess moisture and dampness odors are gone, adjust the control to a lower setting. Use the dehumidifier as long as excess moisture is present.

Humidity Control

Auto Shut-Off

Figure 2

Fan Speed

???This light glows when the bucket is full, or when the bucket is removed or not placed in the proper position. In these cases the Water Level Control Switch shuts off the dehumidifier.

???When the light glows, check the bucket condition.

1.5.2 Electronic type

Figure 3

Fan Speed

???This controls the speed of the airflow.

???High: Fan speed is set to high.

???Low: Fan speed is set to low.

???When Fan Speed button is pressed, the fan speed mode is changed.

Timer

???Press this button to select type of operation.

???Select continuous On for uninterrupted operation.

???Select either 2 or 4 hr. On/Off for cycled operation: The unit will operate for 2 or 4 hours, and then shut off completely for 2 or 4 hours.

The cycle repeats until you change the setting.

???When Timer button is pressed, the Timer indicator lights shift as follow from 2hr.On/Off to 4hr.On/Off.

Bucket Full Indicator

???This light glows when the water bucket is full and needs to be emptied.

Power

???Operation starts when this button is pressed and stops when the button is pressed again.

Auto Restart

???Once power is restored after a power outage, the unit returns to its previous operation setting after a 2 minute delay.

The fan runs immediately when the power is restored.

Humidity Control

??? This button controls the humidity in the room.

???The humidity setting can be set to a permanent "On" setting or to a specific humidity setting between 35% and 70% in 5% increments.

???"On" setting: Dehumidifier runs continuously regardless of humidity condition.

???35% - 70% setting: Dehumidifier runs on and off according to surrounding humidity conditions.

??? 5???

1.6HOW TO OPERATE DEHUMIDIFIER

1.6.1HOW DOES THE DEHUMIDIFIER WORK?

Moist, humid air is drawn over a cold refrigerated dehumidifying coil. Moisture in the air condenses on this coil and drains into a bucket (or through the bucket into a hose and drain).

Dry, clean air is drawn over the condenser where it is actually heated several degrees and discharged out the rear grill into the room. (See Figure 4)

??? It is normal for the surrounding air to become slightly warmer as the dehumidifier operates.

This warming effect further reduces the relative humidity of the surrounding air.

1.6.2 LOCATION FOR THE DEHUMIDIFIER

Allow at least 12 inches of space on all sides of the unit for good air circulation. (See Figure 5)

???The dehumidifier must be operated in an enclosed area to be most effective.

???Close all doors, windows and other outside

openings to the room.

Place the dehumidifier in a location that does not restrict air flow into the front grille or out the rear grille.

The operation of dehumidifier in a basement will have little or no effect in drying an adjacent enclosed storage area, such as a closet, unless there is adequate circulation of air in and out of the area.

Motor

12"12"

Figure 5

1.6.3 MICRO SWITCH

The micro switch assembly, which is located on the drain pan of inside unit, automatically shuts off the dehumidifier when the bucket is full (note, the Auto Shut Off lights, to indicate bucket must be emptied). The bucket replaces in its place, the unit again turns itself on.

1.6.4 AUTO DEFROST

When frost builds up on the cooling coils, the unit will automatically cycle off until the frost disappears. The fan continues to run.

NOTE: The unit will not operate satisfactorily if the room temperature is below 65??F(18??C). If the dehumidifier is operated in low temperature conditions frost can form in the evaporator coil and the unit will cycle ON/OFF repeatedly. In this case, please check your room temperature conditions and stop the unit.

NOTE: The low temperature operation feature in the DH504EL, DH50EL and DH65EL models will continuously cycle up to a temperature of 42??F(6??C).

??? 6???

1.6.5 HUMIDITY CONTROLLER

1.6.5.1 Mechanical Type

The humidity control can be set anywhere between Off and Max for normal operation.

If you need more dehumidification, turn the Humidity Control toward Max. If you need less dehumidification, turn the Humidity Control toward Off.

The relative humidity range is from 20% to 80%. (See Figure 6)

Turn the Humidity Control to Off to stop the unit manually.

1.6.5.2 Electronic Type

The humidity control can be set 'on' or 35%-70% RH(Relative Humidity) for normal operation. (See Figure 7)

If you need drier air, press the Humidity Control button.

If you need moister air, press the Humidity Control button.

Press the Power button to stop the unit manually.

Figure 6

HUMIDITY

CONTROL

HUMIDITY

SETTING

Figure 7

???7???

3. DISASSEMBLY INSTRUCTIONS

3.1 MECHANICAL PARTS

3.1.1 BUCKET AND AIR FILTER

1. Turn the Humidity Control off(Mechanical type) or press the power button off. (Electronic type)

2. Disconnect the power supply.

3. Remove the bucket. (See Figure 9)

4. Pull out the air filter. (See Figure 10)

3.1.2 FRONT CASE AND REAR GRILLE

1. Remove 2 screws which fasten the front grille.

2. Pull the front grille forward and upward. (See Figure 11)

3. Remove 6 screws that secure the rear grille.

4. Remove the rear grille. (See Figure 12)

3.1.3. CABINET AND CONTROL BOX

1. Remove the Bucket, the Air filter and Front grille according to the procedure above.

2. Remove 1 screws that fasten Control box. (See Figure 13)

3. Remove 8 screws on all sides of the cabinet. 4. Lift the Cabinet from the base.(See Figure 13)

5. Remove a screw fasten the earth wire on the inside of control box.

6. Remove 1 screw that fasten control box and unhook control box from hook on the shroud. (See Figure 14)

??? 13???

3.2 CONTROL PARTS

3.2.1 POWER CORD ASSEMBLY

1.After opening the control box, remove the screw that holds the ground wire. (See Figure 15)

2.Disconnect the remaining leads of the power cord from the PWB(PCB) ASSEMBLY, MAIN, then remove it from the control box.

3.2.2 SENSOR ASSEMBLY

1.Disconnect the sensor assembly from the

PWB(PCB) ASSEMBLY, MAIN.

2.Remove the screw which fastens the humidity sensor. (See Figure 16)

3.Remove the thermistor from the holder. (See Figure 16)

4.Disconnect the switch wires from the micro switch assembly. (See Figure 16)

3.2.3 PWB(PCB) ASSEMBLY, MAIN

1.Disconnect all leads of the motor and the compressor from PWB(PCB) ASSEMBLY, MAIN.

2.Remove the screw which fastens the PWB(PCB) ASSEMBLY, MAIN and pull it out after unhooking from 2 rectangular holes of the control box (lower). (See Figure 17)

3.2.4 CAPACITOR

1.Remove the screw that fastens the capacitor. (See Figure 17)

2.Disconnect all leads from the capacitor and then remove it from control box.

3.2.5 MICRO SWITCH ASSEMBLY

1.Turn the nut counterclockwise and pull out the micro switch from the drain pan. (See Figure 18)

???14???

Figure 15

Figure 16

Figure 17

Figure 18

3.2.6COIL ASSEMBLY, SOLENOID (DH504ELY5, LD50ELY5, LD65ELY5)

1.Disconnect the housing of the COIL ASSEMBLY, SOLENOID from the PCB(PWB) ASSEMBLY, MAIN.

2.Remove the screw that fastens the COIL ASSEMBLY, SOLENOID. (See Figure 19)

3.Pull it out upwards.

3.2.7 CONTROL PANEL

3.2.6.1CONTROL PANEL - Mechanical Type (DH305Y5/DH300MY5/DH400MY5/LD40Y5)

1.Disconnect housing and all leads of the rocker switch, SWITCH ASSEMBLY, ROTARY and PWB(PCB) ASSEMBLY, DISPLAY from PWB(PCB) ASSEMBLY, MAIN (3.1.3)

2.Pull out the knob assembly.

3.Remove the nut which fastens the SWITCH

ASSEMBLY, ROTARY.

4.Remove the knob of the rotary switch by pulling it upward.

5.Pull out the rocker switch by pushing the hooks on the both sides of rocker switch.

6.Pull out the PWB(PCB) ASSEMBLY, DISPLAY after turning over both hooks of the display cover.

3.2.6.2CONTROL PANEL - Electronic Type (DH300EY5/DH404EY5/DH400EY5/LD40EY5/DH504ELY5/ LD50ELY5/LD65ELY5)

1.Disconnect the housing of the PWB(PCB) ASSEMBLY, DISPLAY from PWB(PCB) ASSEMBLY, MAIN (3.1.3).

2.Remove 6 screws that secure the PWB(PCB) ASSEMBLY, DISPLAY to the display cover.

Figure 19

ENERGYS

TAR

Figure 20

Figure 21

??? 15???

3.2.8 FAN AND MOTOR

1.Turn the nut left and full out the Fan by hands carefully.

2.Remove 2 screws that fasten Heat Exchange.

3.Lift the H/E and open the H/E around 45 degree clockwise carefully. (See Figure 22)

4.Unfasten 3 screws that secure the Motor and earth wire. (See Figure 23)

5.Remove the Motor.

3.2.9 SHROUD AND DRAIN PAN

1.Discharge the refrigerant by using a refrigerant Recovery System.

2.After purging the unit completely, unbrace the Discharge and the Suction tube connected compressor carefully.

3.Remove 2 screws that fasten the H/E.

4.Unfasten 2 screws that secure the shroud on the sides and then lift shroud from the drain pan. (See Figure 24)

5.Unfasten 2 screws that secure the drain pan to base pan. (See Figure 25)

6.Pull the drain pan backward then take it up from the base. (See Figure 25)

??? 16???

Figure 22

Figure 23

Figure 24

Figure 25

3.3 REFRIGERATING CYCLE

3.3.1 CONDENSER, EVAPORATOR AND

CAPILLARY TUBE

3.3.2 COMPRESSOR

1.Discharge the refrigerant by using a refrigerant Recovery System.

2.After purging the unit completely, unbraze the suction and discharge tubes at the compressor connections.

3.Remove the nuts and washers which fasten the compressor. (See Figure 29)

4.Remove the compressor. (See Figure 29)

Figure 28

Using Rotary Compressor models

Figure 29

???17???

3.4 HOW TO REPLACE THE REFRIGERATION SYSTEM

1.When replacing a refrigeration component, be sure to discharge the refrigerant system by using a refrigerant recovery system.

2.After discharging the unit completely, remove the desired component, and unbraze the pinch-off tubes.

3.Solder service valves into the pinch-off tube ports, leaving the valves open.

4.Solder the pinch-off tubes with service valves.

5.After doing the above procedures, the valve must be closed and left in place on the system for any subsequent procedures.

6.Evacuate as follows.

1)Connect the vacuum pump, as illustrated in Figure 31A.

2)Start the vacuum pump, slowly open manifold valves A and B two full turns counterclockwise and leave the valves open.

The vacuum pump is now pulling through valves A and B to valve C by means of the manifold and entire system.

CAUTION

If high vacuum equipment is used, just crack valves A and B for a few minutes, then open slowly with the two full turns counterclockwise. This will keep oil from foaming and being drawn into the vacuum pump.

3)Operate the vacuum pump for 20 to 30 minutes, until 600 microns of vacuum are obtained. Close valves A and B, and observe vacuum gauge for a few minutes. A rise in pressure would

indicate a possible leak or moisture remaining in the system. With valves A and B closed, stop the vacuum pump.

4)Remove the hose from the vacuum pump and place it on the charging cylinder. See Figure 31B. Open valve C.

Discharge the line at the manifold connection.

5)The system is now ready for final charging.

7.Recharge as follows :

1)Refrigeration cycle systems are charged from the High-side. If the total charge cannot be put

in the High-side, the balance will be put in the suction line through the access valve which you installed as the system was opened.

2)Connect the charging cylinder as shown in Figure 31B.

With valve C open, discharge the hose at the manifold connection.

3)Open valve A and allow the proper charge to enter the system. Valve B is still closed.

4)If more charge is required, the high-side will not take it. Close valve A.

5)With the unit running, open valve B and add the balance of the charge.

a.Do not add the liquid refrigerant to the Low- side.

b.Watch the Low-side gauge; allow pressure to rise to 30 lbs.

c.Turn off valve B and allow pressure to drop.

d.Repeat steps B and C until the balance of the charge is in the system.

6)When satisfied the unit is operating correctly, use the pinch-off tool with the unit still running and clamp on to the pinch-off tube. Using a tube cutter, cut the pinch-off tube about 2 inches from the pinch-off tool. Use sil-fos solder and solder pinch-off tube closed. Turn off the unit, allow it to set for a while, and then test the leakage of the pinch-off connection.

???18???

Equipment needed: Vacuum pump, charging cylinder, manifold gauge, brazing equipment. pinch-off tool capable of making a vapor-proof seal, leak detector, tubing cutter, hand tools to remove components, service valve.

EVAPORATOR ASSEMBLY

(LOW PRESSURE SIDE)

CONDENSER ASSEMBLY

(HIGH PRESSURE SIDE)

COMPOUND GAUGE

MANIFOLD

GAUGE

CAPILLARY

TUBE

SEE INSETS

BELOW

COMPRESSOR

EXTERNAL

VACUUM PUMP

CHARGING

CYLINDER

??? 19???

Loose foreign material inside the housing. Tube hits frame.

Fan blade hits frame Internal compressor noise. Loose set screws

Worn bearings of Motor Assembly

Remove it.

Adjust tubing routine carefully.

Check Motor Mount. If loose, tighten it. Replace compressor.

Tighten them.

If knocking sounds continue when running or loose, replace the motor. If the motor hums or noise appears to be internal while running, replace motor assembly.

The bucket should be properly positioned on the hangers of the drain pan.

Heat Exchange clogged with dust or dirt. Motor

Short circuit or ground in electrical circuit Unit pressures not equalized

Capacitor

Wiring

Refrigeration system

Stuck compressor

Overload protector (OLP)

Clean dust or dirt on the Heat Exchange.

If not running, determine the cause. Replace if required.

Check electrical circuit. Repair.

Allow 2 or 3 minutes for pressure to equalize before starting compressor.