36
YORK INTERNATIONAL
1. PRV MOTOR WIRING CHECKOUT (SETUP OF
VANE MOTOR IS IN THE YG/YB SERVICE MANUAL,
FORM 160.60-M1).
a.Place the
COMPRESSOR
switch into
STOP/RE-
SET
position. Verify that the system is in
SER-
VICE
mode by pressing
MODE
key and observ-
ing the displayed message. See Operating Modes,
page 37.
Display will show system ready to start
Vane/Speed toggle must be in vane (0)
position to operate the vanes
Press key and vanes should OPEN
Press key and vanes should CLOSE
Press key and vanes should HOLD
2. OIL PUMP PRESSURE ADJUSTMENT
Confirm that AC supply to the oil pump is turned on.
a.Manually run the oil pump by means of depressing
and releasing the
MANUAL OIL PUMP
key under
SERVICE
section of the control panel keypad. To
stop the oil pump, depress and release the same
key.
b.Manually run the oil pump for 90 seconds, observ-
ing all lubrication system connections for oil leaks.
NOTE: The oil level will drop initially and oil should
be added while the pump is running to estab-
lish a level midway in the top sight glass,
which should then stabilize. The oil pressure
should be 35 PSID minimum steady.
* Refer to the YORK service manual (only to be performed by a qualified YORK service mechanic).
Improper settings may cause severe damage to the unit.
VANE/SPEED TOGGLE
SERVICE KEYS CONTROL: VANE POSITION
This key will allow you to select whether keys control
speed or vane position.
HISTORY PRINT
This key is used to initiate a history
print to the optional printer. Refer to Form 160.60-N2 for
operation of this key. When the
HISTORY PRINT
key
is pressed, the display will show the following:
PRINT REQUEST IN PROGRESS . . .
OTHER SERVICE KEYS
WARNING RESET
To reset any cycling or warning mes-
sage, unless the condition still exists, place the Control
Center in
SERVICE
mode and press
WARNING RE-
SET
key. To reset most safety shutdown messages, press
WARNING RESET
key in
SERVICE
mode with the
COMPRESSOR
switch in the
STOP/RESET
position.
MANUAL OIL PUMP
This key is operational in any
mode. Press and release this key to run the oil pump.
Press and release the key again to stop the oil pump. A
10-minute maximum is imposed on the running of the oil
pump (i.e. the oil pump will automatically shut off after 10
minutes). If a longer running time is desired, the key must
be pressed again. The manual oil pump feature is dis-
abled from Start Sequence Initiated to system shut-
down.
CALIBRATION PROCEDURES
1. PRV motor wiring checkout
2. Vane motor potentiometer calibration*
3. Bearing proximity/sensor warning reset procedure*
4. Drive line parameter selection*
OPEN
INCR
CLOSE
DECR
HOLD
