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a low pressure control, since these models do not have
an IPR valve.
11. Internal Temperature Protection
Refrigeration Scroll compressors (1.3-7.5 HP) ZB10-
57KC/E incorporate a Thermo-disc which is a
temperature-sensitive snap disc device located at the
scroll discharge port. It is designed to open and route
hot discharge gas back to the motor protector thus
removing the compressor from the line.
12. Motor Protection
Conventional inherent internal line break motor
protection is provided.
13. Oil Types
Polyol ester lubricants must be provided if the scroll
compressor is to be used with HFC refrigerants. ZBKC
compressors that are to be used with R22 should be
supplied with mineral oil. See
complete list of all Emerson approved lubricants.
WARNING
POE may cause an allergic skin reaction and must
be handled carefully and the proper protective
equipment (gloves, eye protection, etc.) must be
used when handling POE lubricant. POE must not
come into contact with any surface or material that
might be harmed by POE, including without
limitation, certain polymers (e.g. PVC/ CPVC and
polycarbonate). Refer to the Safety Data Sheet
(SDS) for further details.
14. Oil Charges
The recommended oil charges for these compressors
are shown in Table 8.
15. Oil Management for Rack Applications
Copeland Scroll refrigeration compressors may be used
on multiple compressor parallel rack applications. This
requires the use of an oil management system to
maintain proper oil level in each compressor crankcase.
The sight glass connection supplied can accommodate
the mounting of the oil control devices.
Unlike semi-hermetic compressors, scroll compressors
do not have an oil pump with accompanying oil pressure
safety controls. Therefore, an external oil level control is
required.
The Emerson OMB/C Oil Level Management Control
combines the functions of level control and timed
compressor shut-off should the level not come back to
normal within a set period of time. This device has been
© 2020 Emerson Climate Technologies, Inc.
Form 93-11
for a
7
found to provide excellent performance in field tests on
Copeland Scroll compressors and is recommended for
parallel system applications.
For
Technical
details
Management Control follow these links or scan their QR
code:
-
OMB/C Instruction Sheet
https://climate.emerson.com/documents/omb-
c--pa-00388-en-4858298.pdf
-
OMB/C & OLC Adapter Kits Installation
Instructions Sheet
https://climate.emerson.com/documents/omb-
adapter-instructions-en-4924792.pdf
See Table 8 order to select appropiate Adapter Kit.
Note: Emerson Climate Technologies' Application
Engineering Department should be contacted for
approved oil management systems.
Immediately after system start-up the oil reservoir level
will fluctuate until equilibrium is reached. It is advisable
to monitor the oil level during this time to assure
sufficient oil is available. This will prevent unnecessary
trips of the oil control system.
Note: If oil management problems are occurring please
refer to
AE17-1320
or contact to Emerson, Application
Engineering Department.
AE4-1317 R14
about
OMB/C
Oil
Level
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