York YZ MODEL A, Руководство по эксплуатации и обслуживанию

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JOHNSON CONTROLS
24
FORM 161.01-OM1
ISSUE DATE: 6/8/2018
SECTION 2 - SYSTEM OPERATING PROCEDURES
FIGURE 5 - LIQUID CHILLER LOG SHEETS
DATE
TIME
Hour Meter Reading
O.A. Temperature Dry Bulb / Wet Bulb
/ / / / / / / / /
Compressor Discharge Temperature
Motor
Input Power
% Input FLA
% Motor FLA
DC Bus Voltage
Magnetic
Bearing Controller
Motor Housing Temperature
Rotor Elongation
Evaporator
Refrigerant
Evaporator Pressure
Corrsponding Temperature
Small Temperature Difference
Liquid
Supply Temperature
Supply Pressure
Return Temperature
Return Pressure
Flow Rate - GPM (If equipped)
Condenser
Refrigerant
Condenser Pressure
Corresponding Temperature
Drop Leg Temperature
Small Temperature Difference
Refrigerant Level
Liquid
Supply Temperature
Supply Pressure
Return Temperature
Return Pressure
Flow Rate - GPM (If equipped)
Capacity
Control
VSD Command
VGD Command
HGBP Command (If equipped)
Remarks:
161.01-MR1 (817)
New Release
Issue Date: August 30, 2017
YZ CENTRIFUGAL
LIQUID CHILLER LOG SHEET
Chiller Location
System No.
Form 161.01-M
R1 (817)
New Releas
e
Issue Date:
August 31,
2017
...an Energy-Saving
approach to your
Service needs...
YZ MOD
A CENTRIFUGA
L
* NOTE:
A pad of 50 log sheets can be ordered from your local Johnson Controls branch by
requesting Form 161.01-MR1.
STOPPING THE SYSTEM
There are three ways to stop the chiller.
1. Push the soft stop key on the home screen of the
OptiView panel, if in LOCAL control Mode.
2. Send a stop command through the remote system
if in Hardwire or BAS control. If the chiller is in
a remote control state and the local soft stop key
is used to stop the chiller, the Start key must be
pressed before the chiller will again permit a start
via the remote source.
3. In an emergency situation, requiring immediate
stoppage, a safety stop switch is located on the
side of the control panel. A normal stop eases the
driveline to stop and should always be used in-
stead of the safety stop during regular operation.
The safety stop is NOT intended for normal shut-
down of the chiller.
The OptiView Control Center can be programmed to
start and stop the chiller automatically at a designated
time (maximum once each day).
See Figure 23 on page 64
in
SECTION 3 -
OPTIVIEW™ CONTROL CENTER FUNCTIONS
AND NAVIGATION of this manual.
SAFETY STOP
When depressed, the chiller will not run under any
condition. For safety reasons, this position is required
for many maintenance tasks to be completed. The
safety stop button must be rotated clockwise to release
the stop condition. The safety stop is not intended for
normal shutdown of the chiller. If used, an immediate
stop occurs that bypasses the programmed controlled
shutdown.
OPERATING LOGS
A permanent daily record should be kept of system
operating conditions (temperatures and pressures) re-
corded at regular intervals throughout each 24-hour
operating period. Automatic data logging is possible
by connecting a laptop PC or serial printer and pro-
gramming the DATA LOGGER function. Figure 5 on
page 24 shows an example log sheet used for record-
ing test data on chiller systems. Log sheets are avail-
able in pads of 50 sheets and may be obtained through
the nearest Johnson Controls office.
An accurate record of readings serves as a valuable
reference. Readings taken when a system is newly in-
stalled establish normal operating conditions. These
readings can be compared to later readings to identify
possible operational concerns.