Sullivan-Palatek D185PKR, Руководство по эксплуатации и обслуживанию

Страница: 29 / 50

21 COMPONENT DESCRIPTION
4.8 ELECTRICAL AND PROTECTIVE CIRCUIT SYSTEM
The compressor electrical system is a 12-volt negative ground system used on smaller-capacity (185–375
CFM) compressors and a 24-volt negative ground system used on larger-capacity (750–1800 CFM)
compressors. It is equipped with a protective circuit to minimize damage. Damage could be caused by high
compressor discharge temperature, high engine water temperature, or low engine oil pressure. Refer to
wiring diagrams as required. The following conditions will cause automatic shutdown of the compressor:
» Compressor discharge temperature (CDT) of approximately 265°F (129°C). A warning is shown when the
temperature reaches 245°F (118°C) and the unit will be forced to unload.
» Low engine oil pressure (EOP) dependent upon engine manufacturer’s specifications.
» High water temperature (EWT) dependent upon engine manufacturer’s specifications.
4.9 ENGINE SHUTDOWN PROTECTION
Sullivan-Palatek uses electronically controlled engines in the 185–1800 CFM line of compressors. Personnel
operating and maintaining these compressors MUST be familiar with and understand the operation and
protection features available with these engines.
WARNING! Failure to follow the electronic control warnings and attempts to override, bypass, or ignore these
warnings can lead to severe engine damage. This damage will not be covered by either the engine
manufacturer’s or Sullivan-Palatek’s warranty.
Electronically controlled engines have software that monitor engine parameters during operation. If the
parameters exceed the normal operating threshold, the engine software will take appropriate actions to
protect the engine from damage. There are two levels of action: derate and shutdown. If either of these
actions are initiated, the software will also activate the yellow warning sign and red engine shutdown/
diagnostic warning sign on the Sullivan-Palatek Electronic Controller (SPEC).
4.9.1 ENGINE DERATE
The engine will derate the power output of the engine in an attempt to correct the parameters that are out
of range. In almost every case, power deration will result in the engine stalling, which will protect the engine
from damage.
NOTE! The yellow warning will be lit on the SPEC screen when this occurs.
4.9.2 ENGINE SHUTDOWN
The second level of protection in the controller is engine shutdown. If the derate feature cannot correct the
unsafe parameters or the engine does not stall, the controller will shut down the engine to protect it from
damage.
NOTE!
The warning and shutdown information will be lit on the SPEC screen when this occurs.
If either of these protection features activate, the engine requires inspection by an authorized engine
manufacturer’s Dealer before attempting to run the machine again.
WARNING! Failure to inspect and correct the fault in the engine or at the point of the external sensor will result in
repeated derates and shutdowns, which can lead to engine damage.
NOTE!
The engine software stores all derate and shutdown information to be reviewed by the engine manufacturer’s
representative. Attempts to restart the compressor without repairing the fault sensed by the protection
system will be recorded in the engine software and will void the engine manufacturer’s warranty.
The Sullivan-Palatek warranty DOES NOT COVER the engine. The engine and its components are warranted
only by the engine manufacturer.
Operators, rental customers and anyone responsible for the operation and maintenance of this compressor
MUST be instructed and briefed on the proper responses to control module warnings. In particular, they
must be instructed to report warning instances and not attempt to restart the compressor until faults are
cleared by certified personnel.