Generac Power Systems 941-2 - Manual (Page 77)

Section 4.2
SHUTOFF VALVE AND REGULATOR
GENERAL
See Figure 1. The fuel shutoff valve (lockoff solenoid)
and the secondary regulator are retained to a flat
mounting bracket which, in turn, mounts to the gener-
ator base cover. The fuel lockoff solenoid is retained
to the mounting bracket by means of a u-bolt. The
secondary regulator is retained to the mounting
bracket with two 1/4"-20 x 3/4" long capscrews.
ITEM
QTY DESCRIPTION
1 1 LP Gas Regulator
2 1 Fuel Lockoff Solenoid
3 1 U-Bolt-1.25" wide (5/16"-i 8)
4 2 3/4" NPT Street Elbow
5 1 3/4" NPT Close Nipple
6 1 3/8" NPT Street Elbow
7 1 1/2" x 3/8" NPT Fitting
8 1 Hose Clamp
9 1 1/2" ID Hose (11.5" long)
10 2 1/4"-20 x 3/4" Capscrew
11 2 1/4" Lockwasher
12 2 5/16" Lockwasher
13 2 5/16"-18 Hex Nut
14 1 Regulator Mounting Bracket
15 1 Sleeving (9" long)
Figure 1. Shutoff Valve & Regulator
ADJUSTMENTS
There are no adjustments on the fuel lockoff solenoid
or the secondary regulator. This system is NOT
equipped with a load block.
THE LP GAS REGULATOR
The secondary regulator is a GARRETSON® Model
KN. It is designed for simplicity and simple operation.
The regulator is suitable for use with low pressure
vaporized gaseous fuels where dependable starting is
a requirement. Recommended inlet pressure to the
regulator is 11 inches water column.
The regulator comes with a 3l4 inch NPT fuel inlet
and a 3/8 inch NPT fuel outlet.
The LOCKOFF ADJUSTMENT SCREW shown in
Figure 2 has been preset at the factory. No additional
adjustment is authorized.
Figure 2. LP Gas Regulator
DANGER! DO NOT ATTEMPT TO ADJUST
THE GAS REGULATOR. REGULATOR
ADJUSTMENTS SHOULD BE ATTEMPTED
ONLY BY QUALIFIED GAS SERVICE TECHNI-
CIANS WHO HAVE THE KNOWLEDGE AND
SPECIALIZED EQUIPMENT FOR SUCH
ADJUSTMENTS.
TESTING THE FUEL LOCKOFF SOLENOID
GENERAL:
The fuel lockoff solenoid is energized open by 12
volts DC power from the A6060 circuit board during
engine cranking. The solenoid can also be energized
open without cranking by actuating the fuel primer
switch on the generator panel.
(Continued)
!
Page 4.2-1