Reznor PDH Operation Manual PreevA - Manual (Page 23)

Form O-PreevA, P/N 234661R8, Page 23
Compressor Oil Charge
PDH/SDH/RDH 75/100/25/150/175/200/225 250/300/350/400A
SHH/RHH 130/180 260/350
PXH, RXH 000A/000B/000C 000D/000E
PEH/REH 10A/20A/40A/15B/30B/60B 30D/60D/90D/120D/40E/80E/120E
Compressor ZP29K ZP57K
POE Oil (oz.) 21 52
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Step 3. Mount the Replacement Compressor
Do not remove the dust cover or rubber shipping plugs until all other system con-
nections 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 compres-
sor 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.
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Step 4. Install New Filter Drier(s) (Select procedure that applies.)
IF the oil measured in Step 2 was not significantly less than the amount shown in
the table or the test for acid in Step 2 did NOT indicate burnout , install a new
R410A 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 R410A refrigerant
requires POE oil which absorbs moisture quickly, it is important to change the filter
drier any time the circuit is opened.
It is recommended to use a tubing cutter when cutting out a filter drier as the des-
iccant absorbs and holds moisture better when it is cool. Heat from a torch may
cause moisture to leave the filter and be absorbed in the oil.
Continue to Step 5.
IF the oil measured in Step 2 was significantly less than shown in the table or the
test for acid in Step 2 did indicate compressor burnout, do the following:
a) Install a liquid line filter drier. If there is acid, install an acid removing filter drier.
Size the acid-removing filter drier at least one capacity size larger than normally
required for the circuit.
b) Install a temporary filter drier in the suction line. When there is acid, a 100%
activated alumina suction filter drier is recommended. The suction line drier
should be sized properly for the circuit and have a service access fitting to
monitor pressure drop across the drier. ( NOTE: Suction line filter drier must be
removed after 72 hours of operation.)
Step 12 includes the remaining procedures required for cleanup of a burnout.
Continue to Step 5.
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Step 5. Braze on Suction and Discharge Lines
CAUTION: Do not leave system open to the atmosphere any longer
than minimum required for installation. POE oil in the compressors is
extremely susceptible to moisture absorption. Always keep ends of
tubing sealed during installation. See Hazard Levels, page 2.
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 dis-
posal method.