YORK INTERNATIONAL
13
FORM 160.60-O1
Left PURGE
: This position should be selected to
purge the engine of unburned gas.
Center IDLE
: This position should be selected if it
is desired to run the engine manually at Idle speed.
Right RATED
: This position should be selected if it
is desired to run the engine manually at Rated speed.
NOTE:
NEVER
MANUALLY ENGAGE THE CLUTCH
TO ATTEMPT TO RUN THE SYSTEM WITH-
OUT THE YORK MICRO PANEL CON-
TROLS. THIS WILL RESULT IN COMPRES-
SOR DAMAGE AND POSSIBLE PERSONAL
INJURY.
4. Electronic Ignition System Diagnostic Reset: This
switch is used to clear EIS alarms as described in
the following section.
RESETTING SYSTEM UNDER ALARM/SAFETY
SHUTDOWN CONDITIONS
1. Alarms Engine Control Panel
The following procedure must be followed to clear
ENGINE related alarm conditions:
A. Alarm conditions will flash the appropriate Alarm
LED and sound the horn on the Alarm Module
until the Alarm Silence button is pressed to ac-
knowledge the alarm condition. At this time, the
LED will stay on continuously and the horn will
turn off.
B. If the alarm condition clears itself after the Alarm
Silence button is pressed, the LED will extinguish,
indicating the alarm condition has returned to nor-
mal operating state.
C. If the Alarm condition does not clear itself, the
LED will remain on continuously until the cause of
the condition is removed.
NOTE: Electronic Ignition System (EIS) Alarms are
the one exception to the above procedure.
The DIAGNOSTIC RESET push-button must
also be pressed in addition to the above pro-
cedure.
2. Purging the Gas Engine
Safety shutdown is any normal shutdown that occurs
during start-up or while in operation that causes the
system to disengage the clutch (stops the compres-
sor), closes the inlet vanes, and allows the compres-
sor lubrication pump to run for two (2) minutes; and
allows the gearbox lubrication pump to run during the
four (4) minute coastdown (engine cooldown) cycle.
When the safety occurrence failure has been satis-
fied, the system can be restarted. (i.e. flow switch).
Emergency stop (E stop) is any failure that shuts
down the system immediately without letting the sys-
tem go through a normal shutdown procedure as de-
scribed above.
Before attempting to re-start the
system the engine must be purged of any raw
gas or ignition by-products that may have been
trapped in the engine/exhaust to prevent any
possibility of damage/injury caused by ignition
on start-up. (See purge procedure page 14.)
Below is a list of quick shutdowns which require a
purge:
Quick Shutdown (Also see page 49)
Flow Switch
Low Evap Press
Low Oil Press
High Press
Evap Transducer or Probe Error
High Discharge Temp
High Oil Temp
High Oil Pressure
Faulty Cond Pressure XDCR
Faulty Oil Pressure XDCR
Oil Pressure XDRC Error
Prox Sensor Safety Shutdown
High Speed Drain Temp
Aux Safety Shutdown
Compressor Overspeed
Surge Safety
PLC Failure
Engine Overload
Engine Overspeed
Engine Fault
Clutch Failure
Low Oil Pressure
High Engine Jacket Temp
Low Evap Pressure Brine
Open Drain Temp Thermocouple
Quick Shutdown
YORK supplies a contact closure
which tells the Caterpillar Panel it is an emergency and
cuts the fuel and ignition. The YORK panel de-clutches.
COMP COASTDOWN – ENGINE SHUTDOWN
This shutdown occurs very quickly to avoid potential equip-
ment damage.
NOTE: In a Quick Shutdown, the engine panel must
be manually reset. This is due to the emer-
gency stop on the engine.
A. Clutch Engage Failure Shutdown
If the clutch of the chiller driveline does not en-
gage, a fault has occurred, and the engine will
shut down. Before attempting to re-start the en-
gine/chiller, a trained operator or YORK/Caterpil-
lar Technician should troubleshoot the system and
correct the problem.
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