57Section 3 Decision-Makerr 3+ TroubleshootingTP-6356 4/12
3.6 FASTCHECKr Diagnostic Tool
Features and Operation
The FASTCHECK
®
diagnostic tool serves as an engine
simulator for testing and troubleshooting the 16-light
controller.
3.6.1 Features
The following paragraphs detail the FASTCHECK
®
.
See Figure 3-24 for an illustration. The following engine
switches simulate engine conditions:
D OFF—locked engine (starter energized but not
turning)
D CRANK—engine cranking, but not started
D RUN—engine running
B-291930
1. Toggle switches
2. Indicator lamps
3. Overspeed button
4. Engine switch
1
2
3
4
Figure 3-24 FASTCHECK
®
Diagnostic Tool
Indicator Lamps:
IGN—(ignition) lamp:
D Indicates battery voltage supply to ignition
(gas/gasoline) or fuel solenoid (diesel), fuel valves,
water valve (city-water cooled sets)
D Lights during cranking and running
CRK—(crank) lamp:
D Indicates battery voltage switched to starter (engine
not necessarily turning)
D Lights only during on-crank cycles
REG—(regulator) lamp:
D Indicates battery voltage supply to generator set’s AC
voltage regulator
D Lights only during cranking and running
BATT—(battery) lamp:
D Indicates test battery(ies) or DC power supply
availability to circuit with correct polarity
Note: LOP, HWT, and OVERSPEED simulate
malfunctions causing engine to shut down. LOP
and HWT circuits start timing after engine runs for
30 seconds. Engine shutdown should occur
5 seconds after pushing the LOP or HWT fault
switches. The OVERSPEED shut down is
immediate.
Switches:
LOP—low oil pressure
HWT—high water (engine) temperature
OVERSPEED—simulates a 70 Hz overspeed condition
LF—low fuel (not used for testing)
LWT—low engine water temperature
AOP—anticipatory (low) oil pressure
AWT—anticipatory (high) water temperature
3.6.2 Application
Use the FASTCHECK
®
to test the controller on the
generator set when troubleshooting startup problems,
or to test and troubleshoot the controller when removed
from the generator set.
To operate the FASTCHECK
®″
obtain the following
equipment:
D FASTCHECK
®
simulator (B-291930) and harness
(255915).
D Variable low-voltage DC power supply; 0-30 volt,
3 amp minimum current, 0.5% maximum output
voltage ripple at 30 volts DC. A 12- or 24-volt battery
(depending on system voltage) can also operate the
FASTCHECK
®
.
Note: All 200 kW and above models use a 24-volt
battery engine electrical systems. The
20-180 kW models use 12-volt or 24-volt
engine electrical systems. Check generator
set nameplate for engine electrical system
voltage.
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