If chain is used as the interconnection,
be careful it is not the type of chain that
can loop on itself, and make sure it cannot
grab on anything in its movement area.
This will definitely cause the throttle to be
stuck in the open position.
Step 4 : Install the pressure transducer
on the pressure side of the pump. This
Solid State transducer will operate over a
pressure range of 0-300 psi. Pressures
to 500 psi will not harm it, but consult the
factory if you operate the pump with
pressure over 500 psi.
The transducer should not be mounted
using any tube. It SHOULDN'T be
mounted directly over the volute, but before
any check valves.
Step 5 : IMPORTANT : Connect RED wire
to Pump Engaged switch and the BLACK
wire to ground.
The 12V supply for the Governor
should only be supplying 12V when the
apparatus is in pump.
Connect the YELLOW wire to the
chassis ground. If you have a 24 Volt
vehicle, make sure the unit was
purchased with the 24VDC option.
Consult factory for details.
Step 6 : Connect extension cables from
control unit to the Governor motor and
pressure transducer.
Step 7 : With engine off, switch to
MANUAL. Press "INC" button. Check the
Governor motor travel. It should pull the
throttle for a distance of at least 2". Press
"DEC" button. Make sure that the rod on
the servo motor stops at the end of the
travel.
Step 8 : Turn the unit to MANUAL, and
run Governor motor up and down with
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increase and decrease switches to check
the travel and stops. In the MANUAL and
in the AUTO mode, when the "INC" or
"DEC" button is pushed, the electronics
are completely bypassed and the system
operates as a straight DC motor.
This unit will operate in this fashion
even if the electronics failed, the fuse is
missing or is blown.
Step 9 : Put the pump in operation. Turn
to AUTO. Set pressure selector to
approximately 150 psi. Press "INC" button
until RPM advances sufficiently to give
pump pressure greater than 50 psi.
Release the "INC" button. Automatic
operation will proceed and bring pump
pressure to 150PSI.
The governor automatically resets
the rpm to idle any time the pump
pressure drops below 50 psi. The
pressure must exceed 50 psi for the
automatic mode to be effective.
Below 50 PSI, it automatically shuts
itself off. Therefore in "Auto" mode, either
the incoming pressure must exceed 50
psi, or pump pressure must exceed 50
psi using the "INC" button.
NOTE :
1) The pressure select dial is a rough dial
for the pressure desired. Use your master
pump gage as your reference.
2) Make sure the transducer is mounted
on the pressure side of the pump, away
from any pressure disturbances.
3) Check that the ground goes right to the
chassis of the vehicle and not just the
body, as many bodies and some of the
pumps are insulated from the body by
rubber or wood. Grounding directly to
the negative side of the battery is best.
