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MODEL 600 SERIES OPERATOR | Rev. 2019.7.1
PURGING THE OPERATOR
THIS STEP IS NOT REQUIRED UNLESS THE OPERATOR IS RUNNING ERRATICALLY
Occasionally during the shipping process, the 600 Series Operator may be turned upside down. This may require
the valve system to be purged after you have completed the installation. It is possible to determine if this is
necessary by whether or not the operator runs in a smooth manner. If it does not (if it jerks or runs unevenly),
use the Allen wrench provided under the locking cap, turn the manual bypass valve
COUNTER-CLOCKWISE
one-
half turn. Slowly swing the operator full open and closed for six to seven complete cycles. Then slowly remove
the fill cap on the rear flange of the operator to expel the air. Replace the fill cap.
Tighten the bypass valve with the Allen wrench and signal the operator to run. While the motor is running, open
and close the bypass valve, pausing between OPEN and CLOSE. Do this ten to twelve times. When finished,
remove the fill cap to expel the air from the operator. Replace the oil filler cap screw and tighten until snug.
DO NOT OVER TIGHTEN
.
ADJUSTING THE OPERATOR
The pressures on the operator are preset at Byan Systems prior to shipment. If the pressures should need to be
adjusted, whether higher or lower, you
MUST
adjust both pressure directions the same amount of turns (i.e. ¼
turn or ½ turn, etc.)
The Pressure Adjustment screws are found under the locking cap on the top of the operator. Looking from the
rear to the front of the operator, the left valve adjusts retracting pressure and the right valve adjusts extending
pressure.
Turning these valves clockwise INCREASES pressure, and turning them counter-clockwise
DECREASES pressure
.
With the motor running,
DECREASE
the pressures equally until the operator stops moving in both directions.
Begin increasing pressure on both valves with the motor running. Adjust the pressure to where it is necessary
to physically stop the gate. At this point, either increase the retracting pressure
OR
decrease the extending
pressure ½ to ¾ of a turn. The retracting pressure
MUST
be higher than the extending pressure.
HYDRAULIC FLUID
Byan Systems Operators use Fuchs Aceite Multi-Temp Hydraulic Fluid. This fluid has a relatively low viscosity
enabling it to start flowing more quickly in colder weather. Once the fluid reaches operating temperature, it
has a steady flow meaning no rush of thin fluid to cause poor hydraulic performance, or worse yet, excessive
pump wear, failure and expensive operational downtime.
Fuchs fluids minimize the effect temperature has on viscosity and resists the shearing action of high speed
pumps by maintaining their stable viscosity longer.
There is a zinc type additive in the fluid to help impede wear and premature replacement. It helps prevent
corrosion to metals and is designed to be compatible with the hoses, seals and other elastomer products.
Fuchs Aceite Multi-Temp readily separates air and water to prevent foaming, keeping the hydraulic fluid fit and
dielectric strength high.
