Post-Start Inspection; Stopping Instructions; Sequence Of Operation - Carrier RG2059 Series Operation And Service

4. With the intake heater switch held in the PREHEAT position, place the ignition switch in the START position.
5. After the engine has started, continue to hold the intake heater switch in the PREHEAT position until the
engine develops sufficient oil pressure to close the oil pressure safety switch (approximately 5 seconds).
When released, the intake heater switch will automatically return to the OFF position and the heater will
remain energized for 3 minutes.
Units with Auto Restart
1. Make sure that CB-1 is in the OFF position.
2. Hook up the 460 volt cable from the refrigerated unit to the Genset receptacle.
3. Place the Ignition switch (IGN) (See
4. The auto restart module will energize the heater for 30 seconds and the safety buzzer will sound. After the
30 second delay, the unit will attempt to start.
3.3.3

Post-Start Inspection

1. Allow the Genset unit to run for at least 2 minutes.
2. Turn on CB-1.
3. Check generator output with a volt meter, voltage output at start up with no load at 50Hz operation should be
1500 RPM, 360-460 VAC. Voltage output may vary and fall with ISO specifications based on ambient (Refer
to Section 2.7).
4. Start the refrigeration unit.
5. Run engine 10 minutes and check total time meter operation.
6. Listen for abnormal bearing noise from the AC generator.
7. Check fuel lines, lube oil lines, and filters for leaks.
8. Check exhaust system for leaks.
3.3.4

Stopping Instructions

1. Place CB-1 in the OFF position.
2. Place the ignition switch in the OFF position.
3.4

SEQUENCE OF OPERATION

Standard Units
With the intake heater switch (HS) held in the ON position, current flows through the ammeter to the intake heater.
While heater is on, the ammeter will show an approximate 42-amp draw.
A second set of contacts also energizes the safety relay (S).
If the high water temperature switch (HWT) opens to break the safety relay ground connection, the safety relay will
not energize, and the engine will not start, To start the engine, the ignition switch (IGN) is held in the START posi-
tion. With the switch in the START position, current flows to the start solenoid (SS), through the SS contacts to the
starter motor (SM). Current then flows to the intake heater timer, intake heater relay (HR) and to the heater, while
simultaneously powering the electronic governor module (EG), fuel solenoid (FS), and engine speed sensor (ESS).
The starter motor turns over the engine resulting in pumping of fuel to the engine cylinders by the injection pump.
This fuel is ignited by heat of compression; thus starting the engine. When the engine has developed sufficient oil
pressure, the low oil pressure (LOP) switch contacts close to maintain power to the safety relay (S).
Figure 2.6) in the Run position.
WARNING
!
Beware of moving V-Belt and belt driven components.
3–5 T-361