Quantech QTC3040T, Installation Operation & Maintenance, Page: 183 / 190

183
QUANTECH
FORM QTC3-NM1
ISSUE DATE 08/03/2022
10
SECTION 10 – MAINTENANCE
It is the responsibility of the equipment owner to per-
form maintenance on the system.
Important
If system failure occurs due to improper maintenance
during the warranty period, Quantech will not be liable
for costs incurred to return the system to satisfactory
operation. The following is intended only as a guide
and covers only the chiller unit components. It does
not cover other related system components which may
or may not be furnished by Quantech. System compo-
nents should be maintained according to the individual
manufacture’s recommendations as their operation will
affect the operation of the chiller.
COMPRESSORS
Oil Level check
The oil level can only be tested when the compressor is
running in stabilized conditions, to ensure that there is
no liquid refrigerant in the lower shell of the compres-
sor. When the compressor is running at stabilized con-
ditions, the oil level must be between 1/4 in. and 3/4 in
the oil sight glass. At shutdown, it is acceptable if the
oil level falls to the bottom limit of the oil sight glass.
Use YORK “V” oil for Copeland compres-
sor and “PVE” oil for Bitzer Compressor.
Compressor
Brand
P/N of Oil SAP of Oil
Copeland 11-00949-000 729001
Bitzer 11-00982-000 729009
Oil Analysis
The oil used in these compressors is pale yellow in
color (POE oil). If the oil color darkens or exhibits a
change in color, this may be an indication of contami-
nants in the refrigerant system. If this occurs, an oil
sample should be taken and analyzed. If contaminants
are present, the system must be cleaned to prevent
compressor failure.
Never use the scroll compressor to pump
the refrigerant system down into a vacu-
um. Doing so will cause internal arcing
of the compressor motor which will result
in failure of compressor.
CONDENSER FAN MOTORS
Condenser fan motors are permanently lubricated and
require no maintenance.
CONDENSER COILS
Dirt should not be allowed to accumulate on the condenser
coil surfaces. Cleaning should be as often as necessary to
keep coils clean.
Exercise care when cleaning the coil
so that the coil fins are not damaged.
OPERATING PARAMETERS
Regular checks of the system should be preformed
to ensure that operating temperatures and pressures
are within limitations, and that the operating controls
are set within proper limits. See SECTION 8 – UNIT
OPERATION , SECTION 6 – COMMISSIONING , and
SECTION 4 – INSTALLATION of this manual.
ON-BOARD BATTERY BACK-UP
U5 is the Real Time Clock chip located on the 031-02630
IPU II board that maintains the date/time and stores custom-
er programmed setpoints.
Do not confuse JP1 on the IPU II (031-
02630) board with JP1 on the I/O
(031-02550) board.