a
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reSSure
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eLief
V
aLVe
When placing the operator into service, pressure relief valve
adjustments are required! To provide instruction during
installation, a cautionary yellow tag is wire tied to every pump
pack. The same instructions are provided in this section.
Pressure relief valves differ depending on the model.
Tools Needed:
½
" and
9/16
" box end wrenches.
NOTICE:
Pressure relief valve adjustments establish the threshold for the inherent entrapment sensor (IES). The
optimal pressure setting produces uniform gate travel and trips the IES when the gate encounters an
obstruction.
Model #
Model
Gallons per Minute
Motor hp
Maximum PSI
1
HydraSwing 150
3.1
2 hp
1000 psi
2
HydraSwing 80F
4.0
2 hp
1000 psi
3
HydraSwing 40 and 40 Twin 0.8 and 1.6
2 hp
1200 psi
4
HydraSwing 40F
1.2
2 hp
1200 psi
CAUTION
Never exceed the maximum psi setting.
Make sure the gate is properly installed and aligned before performing the following steps. Take precautionary
measures to keep the gate’s travel path clear. The gate will be moving while you adjust the pressure relief
valve.
DANGER
DO NOT attempt to adjust the pressure relief valve unless you are an experienced hydraulic gate
operator installer. Incorrect pressure settings can cause injury and even death!
1. Expose several threads on the Pressure Relief Valve by loosening
the locknut with a
9/16
"
box end wrench.
2. Use a
½
" box end wrench to turn the Adjustment Screw.
3. Use the keypad to cycle the gate Open or Close and, while the motor
is running, turn the Adjustment Screw clockwise (CW) to raise the
pressure. The motor runs for a few seconds, stops, and then enters
safe mode. SAFE appears on the display.
4. Press Reset and repeat step 3 until gate travel is reliably consistent
without entering SAFE mode.
5. To lock in the pressure setting, hold the Adjustment Screw with or
wrench and tighten the locknut.
.
.
.
.
.
Pressure
Relief Valve
© 2018
Initial Setup
MX3636-01 Rev. D
25
Summary of Contents for HSG80F
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