Nortek YDHA, Эксплуатация и обслуживание, Страница: 22 / 48

Form O-Y, PN 273647R5, Page 22
Use a high temperature torch to disconnect the suction line and the discharge line from
the compressor.
d) Remove the mounting bolts and the compressor. Save the mounting hardware to
attach the grommets and sleeves shipped with the replacement compressor.
e) To test for acid and to assure excess oil does not remain in the circuit, remove oil
from the failed compressor. Measure the amount of oil.
CAUTION: In addition to the required eye protection and gloves, care
should be taken in handling POE oil because it may cause damage to
certain plastics and roofing materials. See Hazard Levels, page 2.
If the oil taken from the compressor and measured is found to be significantly
lower than listed in the table below, clean the excess oil through use of suction
and liquid line filter driers. Beginning in Step 4, follow the same procedure as for
burnout cleanup.
Use an acid test kit to check the oil for acid. If acid is found, beginning in Step 4 ,
follow procedures indicated for burnout cleanup.
Dispose of oil and compressor using an approved environmentally safe disposal
method.
3.7 Compressor
Operation,
Maintenance,
and
Replacement
(cont'd)
Compressor Oil Charge (POE Oil)
Compressor Model cc oz
ZP51K5E-TF5 1124 38
ZP51K5E-TFD 1124 38
ZP51K5E-TFE 1124 38
ZP72KCE-TF5 1656 56
ZP72KCE-TFD 1656 56
ZP72KCE-TFE 1656 56
ZP83KCE-TF5 1656 56
ZP83KCE-TFD 1656 56
ZP83KCE-TFE 1656 56
ZP103KCE-TF5 3135 106
ZP103KCE-TFD 3135 106
ZP103KCE-TFE 3135 106
ZP120KCE-TF5 3135 106
ZP120KCE-TFD 3135 106
ZP120KCE-TFE 3135 106
ZP137KCE-TF5 3135 106
ZP137KCE-TFD 3135 106
ZP137KCE-TFE 3135 106
ZP182KCE-TW5 3135 106
ZP182KCE-TWD 3135 106
ZP182KCE-TWE 3135 106
ZPD34K5E-PFV 1124 38
ZPD34K5E-TF5 1124 38
ZPD34K5E-TFD 1124 38
Important NOTES: These
R-410A compressors use a
polyester (POE) lubricant.
Types of recommended POE
oil are Copeland Ultra 22
CC, Copeland Ultra 32 CC,
Copeland Ultra 32-3MAF, Mobil
EAL, Arctic 22 CC, Uniqema
Emkarate RL32CF, or Uniqema
RL32-3MAF.
POE oil absorbs moisture much
quicker and to a greater degree
than standard mineral oil. The
compressor must not be left
open longer than 15 minutes
during replacement. During
installation the system must be
swept with an inert gas such as
dry nitrogen to keep moisture
from entering the compressor
and prevent the formation of
oxides.
Compressor Model cc oz
ZPD34K5E-TFE 1124 38
ZPD51K5E-PFV 1124 38
ZPD51K5E-TF5 1124 38
ZPD51K5E-TFD 1124 38
ZPD51K5E-TFE 1124 38
ZPD72KCE-TF5 1774 60
ZPD72KCE-TFD 1774 60
ZPD72KCE-TFE 1774 60
ZPD83KCE-TF5 1656 56
ZPD83KCE-TFD 1656 56
ZPD83KCE-TFE 1656 56
ZPD103KCE-TF5 3135 106
ZPD103KCE-TFD 3135 106
ZPD103KCE-TFE 3135 106
ZPD120KCE-TF5 3135 106
ZPD120KCE-TFD 3135 106
ZPD120KCE-TFE 3135 106
ZPD137KCE-TF5 3135 106
ZPD137KCE-TFD 3135 106
ZPD137KCE-TFE 3135 106
ZPD182KCE-TW5 3135 106
ZPD182KCE-TWD 3135 106
ZPD182KCE-TWE 3135 106
•
Step 3 . Mount the Replacement Compressor
Do not remove the dust cover or rubber shipping plugs until all other system
connections are complete (i.e. new liquid line filter drier(s) installed and all tubing
changes made - see Steps 4 and 5 ). The amount of time the compressor is open
to the atmosphere must be kept to a minimum.
Use the new mounting grommets and sleeves that are shipped with the
compressor to mount it. The sleeves will prevent over compression of the
grommets. Re-use the mounting bolts from the compressor that was removed. The
mounting bolts will bottom out when tight.
•
Step 4. Install New Filter Driers
(Select procedure that applies.)
IF the oil measured in Step 2 was not significantly less than the amount shown in
the table above or the test for acid in Step 2 did NOT indicate burnout , install
a new R-410A refrigerant liquid line filter drier. The filter drier must be rated for
no less than 600 psig and be the proper size for the circuit. Because R-410A
refrigerant requires POE oil which absorbs moisture quickly, it is important to
3.0 Maintenance/Service Procedures - Unit & Cooling (cont'd)