Low Fuel (Level/Pressure) Switch - Kohler APM402 Operation

6.1.8

Low Fuel (Level/Pressure) Switch

Some gaseous-fueled models offer a low fuel pressure switch. The low fuel pressure switch connects to the same controller
terminal as the low fuel level switch on diesel-fueled models. See Figure 73, Figure 74, and Figure 75.
Note:
The main tank or the transfer/day tank includes the low fuel level switch. The fuel tank supplier typically provides the low fuel
level switch.
Figure 73 Low Fuel Switch (Level or Pressure)
Figure 74 Low Fuel Switch Connection to Controller Connection
Switch Rating
Wiring Recommendation
Gauge
18-20
14
10
Figure 75 Switch Rating & Wiring Recommendation
140
Low Fuel Switch (Optional)
Provided by Fuel Tank Supplier
Connect to TB1 (for
warning) or TB3
(for shutdown)
APM402 / DEC 3000 Controller
Aux Warning Switch
(Customer Provided)
12 volts DC minimum, 0.5 amp minimum
mm (ft.)
30.5 (100)
153 (500)
305 (1000)
Located in Main Tank as
Battery Ground
Aux Shutdown Switch
(Customer Provided)
TP-6694 9/20