Evacuating And Recharging; To Remove Evaporator Or Capillary Tube; To Remove Condenser; Equipment Needed - Frigidaire FDH25J Service Manual

in the oil and the compressor. Also, avoid opening the system
when any of the components or lines are cold.
1. Disconnect electrical supply to dehumidifier.
2. Remove bucket, front grille, top cap and wrapper.
3. Remove one screw at bottom of support of blower
motor assembly.
4. Bend all four tabs on top and bottom of condenser to
outside and pull blower assembly away from
condenser.
5. Recover refrigerant by using EPA approved
recovery system.
6. Remove leads from compressor motor terminals.
7. Remove mounting clips or bolts holding compressor to
base.
8. After refrigerant is completely recovered, cut
suction and discharge lines as close to compressor
as possible. Leave only enough tubing to pinch off and
seal defective compressor. Plug or tape any open
system tubing to avoid entrance of moisture and air
into system. Remove inoperable compressor and
transfer mounting parts to new compressor.
9. Install new compressor in exact same manner as
original compressor.
10.Reform suction and discharge lines to align with
new compressor. If they are too short, use additional
lengths of tubing. Joints should overlap 0.5 inch to
provide sufficient area for good solder joint. Clean
and mark area where tubing should be cut. Cut
tubing with tubing cutter. Work as quickly as pos-
sible to avoid letting moisture and air into system.
If process tube is too short, silver solder four
inch piece of tubing onto process tube at this time.
11. Solder all connections according to soldering
procedure outlined on page
12. Evacuate and charge system using recommended
procedure described under Evacuating and
Recharging on pages 15 to 16.
13. Reconnect compressor terminal leads.
14. Reassemble unit.
:On models equipped with Rotary Compres-
sors, the process tube is on the high side of the
system. If you need access to the low pressure side
of the system, it is necessary to install a
suction line and add a process tube to it.
1. Disconnect dehumidifier from electrical supply.
2. Remove bucket, front grille, top cap and wrapper.
3. Recover refrigerant.
12.
in the
16
4. To replace capillary tube, unsweat tube from evaporator
and condenser. Remove and replace.
5. To replace evaporator, unsweat capillary tube and
suction line.
6. Remove top and center screws from left side of evaporator.
7. Swing evaporator out from right hand side of condenser.
1. Disconnect dehumidifier from electrical supply.
2. Remove bucket, front grille, top cap and wrapper.
3. Recover refrigerant.
4. Unsweat capillary tube and discharge line.
5. Remove three screws securing evaporator and
condenser from left side and one screw from bottom
right securing condenser.
6. Pull suction line forward far enough to allow evaporator
to be pulled out.
7. Remove one screw at bottom of support of blower motor
assembly.
8. Bend all four tabs on top and bottom of condenser to
outside and pull blower assembly away from condenser.
9. Lift condenser out and replace.
: Prior to reassembling condenser and evapo-
rator, the gap aound right and left srew hole brackets
must be sealed with Permagum. See Figure 16a.
Gap
Figure 16a
10.Reassemble in reverse order.
Dehumidifiers are not equipped with a filter dryer, but as
a servicer, if you feel you need a filter dryer in this system
after doing your repair, a filter dryer is available through
the Replacement Parts System.
• Heated Dial-A-Charge charging cylinder
• Standard 3-port manifold gauge set:
• four charging hoses
• Tee fitting with valve core stem removed
(Robinair No. 40396)
• Hand shut-off valve (Robinair No.40380)
• Two stage vacuum pump
• Process tube adapter kit (Robinair No. 12458)
• Tubing cutter
• Pinch-off tool capable of making leak proof seal
• Complete brazing torch set
• Small 3-corner file
• Grit cloth or Scotch-Brite
• 45% silver solder and flux or sil floss
Screw Hole Brackets