Changing Controller Mode; Shutting Down Engine And Heater; Emergency Stop Switch; Battery Disconnect Switch - Generac Mobile MFH900 Owner's Manual

Changing Controller Mode

See Figure 3-6. The Mode icon (A) displays on various
pages. When it displays, change controller mode by
pressing corresponding button once.
Figure 3-6. Mode Icon

Shutting Down Engine and Heater

1. Switch main power to OFF (O).
Engine runs until heat exchangers are cooled.
2. When engine stops, disconnect and stow ducting.
3. When amber light on battery disconnect switch
shuts off, switch battery disconnect to OFF (O).
4. Pull (detach) the battery disconnect lever from

battery disconnect switch.

NOTE: See Figure 3-7. While the amber light is on, the
Wait to Disconnect icon displays on the controller.
Figure 3-7. Wait to Disconnect Icon
IMPORTANT NOTE: Do not switch battery disconnect
OFF (O) until amber light switches off. The light indi-
cates DEF is being purged from the DEF lines. Purg-
ing the lines (the purge cycle) prevents DEF freezing
in the lines.
NOTE: The purge cycle could last up to 10 minutes.

Emergency Stop Switch

CAUTION
Equipment Damage. The emergency stop switch is
not to be used to power down the unit under normal
operating circumstances. Doing so could result in
equipment damage.
See Figure 3-8. The unit is equipped with one
emergency stop switch. The red button is clearly labeled
EMERGENCY STOP. The switch can be accessed and
Owner's Manual for Flameless Air Heater
activated
locked.
A
Activate the emergency stop switch by pushing the
button in until it locks down. This trips the main circuit
breaker which then opens the contact, disconnecting the
load to the connection lugs. This will also open the fuel
circuit, shutting down the engine. The emergency stop
fault will be displayed on the control panel. The switch
will remain closed until it is pulled out.
Battery Disconnect Switch
When switching OFF the battery disconnect switch:
1. Switch to the OFF position.
2. Remove the lever from the switch.

Before Towing Unit

Before towing unit:
•
•
•
(000246b)
with all
Figure 3-8. Emergency Stop Switch
Drain any fluids from containment.
Close and lock all doors.
Verify tire pressure.
Operation
doors closed and
006235
003575b
23