Generac Power Systems MAC400HC, Owner'S Manual

Page: 19 / 40

Owner’s Manual for Flameless Heat Cart 15
Operation
Figure 3-10. Reset Handle in Ready State
Figure 3-11. Emergency Stop T-Handle
Testing the PAS
Test the PAS at least once a month to ensure optimal
valve performance.
Pull the T-handle with the unit completely shut down to
manually test the PAS. This action triggers an actuator,
closing the butterfly valve inside the valve body. An
audible click or series of clicks can be heard when the
actuator engages. Confirm that the valve is closed by
verifying that the reset knob is rotated completely
clockwise. If any resistance is felt, or the valve does not
close, contact Generac Mobile Products Technical
Support.
Resetting the PAS
The emergency PAS system must be reset after each
emergency event according to the steps below:
1. Turn the control power switch to OFF (O).
2. Locate the PAS valve located inside the cabinet of
the unit.
3. See Figure 3-11 . Pull T-handle on the PAS valve
outwards until there is an audible “click”.
4. See Figure 3-10 . Turn rest knob counter-clockwise
90 degrees until there is an audible “click”.
5. Reset the T-handle.
6. Repeat steps in Engine and Heater Startup to
start unit.
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