York YCUL0045E, Установка, эксплуатация и обслуживание

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JOHNSON CONTROLS
109
FORM 150.63-NM8 (1020)
3
MAINTENANCE
It is the responsibility of the equipment owner to provide
maintenance on the system.
IMPORTANT
If system failure occurs due to improper maintenance
during the warranty period, Johnson Controls will not
be liable for costs incurred to return the system to sat-
isfactory 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 Johnson Controls.
System components 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 com-
pressor. When the compressor is running at stabilized
conditions, the oil level must be between 1/4 and 3/4 in
the oil sight glass. Note: at shutdown, the oil level can
fall to the bottom limit of the oil sight glass. Use YORK
“F” oil when adding oil.
Oil Analysis
The oil used in these compressors is pale yellow in color
(mineral oil). If the oil color darkens or exhibits a change
in color, this may be an indication of contaminants 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 vacuum. 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 con-
denser coil surfaces. Cleaning should be as often as
necessary to keep coil clean.
Exercise care when cleaning the coil
so that the coil fins are not damaged.
Do not use a high pressure washer,
acidic coil cleaner, or water high in
chloride content.
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.
Refer to the Operation, Start-Up,
and Installation sections of this manual.
ON-BOARD BATTERY BACK-UP
U5 (031-02565-000) on the IPU2 Board is the Real
Time Clock chip that maintains the date/time and stores
customer programmed setpoints. Anytime the chiller is
to be off (no power to the I/O Board) for an extended
time (weeks/months), the clock should be turned off to
conserve power of the on-board battery. To accomplish
this, the J11 jumper on the I/O Board must be moved
to the “CLKOFF” position while power is still supplied
to the I/O Board.
OVERALL UNIT INSPECTION
In addition to the checks listed on this page, periodic
overall inspections of the unit should be accomplished
to ensure proper equipment operation. Items such as
loose hardware, component operation, refrigerant leaks,
unusual noises, etc. should be investigated and corrected
immediately.