YORK INTERNATIONAL
12
FORM 160.54-O2(1102)
FORM 160.54-O2(1102)
13
YORK INTERNATIONAL
OPERATING INSPECTIONS – See Section 2
By following a regular inspection using the display
readings of the Microcomputer Control Center, and
maintenance procedure, the operator will avoid seri-
ous operating difficulty. The following list of inspec-
tions and procedures should be used as a guide.
Daily
1. Check OptiView™ Control Center displays.
2. If the compressor is in operation, check the bear-
ing oil pressure on the
SYSTEM
Screen. Also
check the oil level in the oil reservoir. Operating
oil level should be between the upper and lower
sight glasses. Drain or add oil if necessary.
3. Check entering and leaving condenser water pres-
sure and temperatures for comparison with job
design conditions. Condenser water temperatures
can be checked on the
SYSTEM
Screen.
4. Check the entering and leaving chilled liquid tem-
peratures and evaporator pressure for comparison
with job design conditions on the
SYSTEM
Screen.
5. Check the condenser saturation temperature (based
upon condenser pressure sensed by the condenser
transducer) on the
SYSTEM
Screen.
6. Check the compressor discharge temperature on
the
SYSTEM
Screen. During normal operation
discharge temperature should not exceed 220°F
(104°C).
At start-up, the entering condenser water tempera-
ture may be as much as 25°F (14°C) colder than the
standby return chilled water temperature. Cooling
tower fan cycling will normally provide adequate
control of the entering condenser water temperature
on most installations.
OPERATING LOG SHEET
A permanent daily record of system operating condi-
tions (temperatures and pressures) recorded at regular
intervals throughout each 24 hour operating period
should be kept.
An optional status printer is available for this purpose
or Fig. 5 shows a log sheet used by YORK Personnel
for recording test data on chiller systems. It is avail-
able from the factory in pads of 50 sheets each under
Form 160.44-F7 and may be obtained through the
nearest YORK office. Automatic data logging is pos-
sible by connecting the optional printer and program-
ming the
DATA LOGGER
function.
An accurate record of readings serves as a valuable
reference for operating the system. Readings taken
when a system is newly installed will establish normal
conditions with which to compare later readings.
For example, an increase in condenser approach
temperature (condenser temperature minus leaving
condenser water temperature) may be an indication of
dirty condenser tubes.
FIG. 5 –
LIQUID CHILLER LOG SHEETS
*
NOTE:
These items can be printed by an electronic printer connected to the Microboard
and pressing the
key on the Keypad, or automatically using the Data Logger feature.
LD00467
23889A
