C.E. Niehoff & Co. EPM Troubleshooting Guides - Manual (Page 2)

Page 2
TG0051A
Section A: Component Description and Operation
EPM Description and Operation
EPM Electric Power Manager used with these units
• is rated for continuous current at 200 A on 28 V
side. The 14 V side is rated for continuous current
at 100 A.
• manually connects batteries after battery connect
switch on vehicle is pressed.
• automatically disconnects batteries from vehicle
loads 3 minutes after engine shuts down.
• provides 28 V auxillary output power for up to four
20 A channels and 14 V auxillary output power for
one 20 A channel, protected by an internal, reset-
table, electronic circuit breaker.
• keeps batteries connected to system when emergency
flashers are activated.
Normal Start-Up Procedure
1. Press the vehicle battery-connect switch for about
one second to connect batteries to electrical system.
2. Turn START-RUN switch to RUN.
3. Wait until glow plug light goes off.
4. Turn START-RUN switch to START and crank
engine.
5. Return switch to RUN when engine starts.
6. If engine fails to crank, turn START-RUN switch to
OFF, repeat steps 1-5 above.
Emergency Start-Up Procedure
1. Connect slave vehicle Nato connector to vehicle.
2. Follow steps 2-5 under “Normal Start-Up Procedure.”
3. Disconnect slave NATO connector after engine is
running.
Shutdown Procedure
1. Place gear shift in park or neutral and set parking
brake.
2. Turn start-run switch to OFF to stop engine.
3. Batteries will be disconnected from vehicle in 3 min.
unless emergency flashers are on, then batteries
will stay connected until flashers are turned off
or battery is discharged.
This procedure will bypass EPM
and batteries in system. Use this
procedure ONLY when vehicle
must be removed immediately from
location in an EMERGENCY.
WARNING
Figure 1 – Battery Connect Switch