40
FRONT LIMIT
There should be 69 ¾" from the left end of the aluminum housing to the edge of the limit switch mounting angle. This should stop the
ram 1" to 1 1/2" from the end of its stroke.
This may be checked by switching the selector switch to HAND and extending the ram completely. Measure the distance from the
front face of the ram to the baler door and compare this to the same measurement taken with the machine cycling on AUTO. The
difference should be 1" to 1 1/2"
HYDRAULIC ADJUSTMENTS
Adjustments to the hydraulic system must be carried out by authorized service technicians.
Pressure settings specified by the factory must never be exceeded. Exceeding these pressures will void the
warranty, cause permanent damage to the baler, and may result in personal injury.
PRESSURE SWITCH ADJUSTMENT
The pressure switch is factory set at 2800 PSI and in not adjustable. This switch controls the maximum baling pressure.
PUMP COMPENSATOR AND RELIEF VALVE ADJUSTMENT
The pump compensator is set to reduce the pump flow to zero at 3000 PSI. It may be necessary to adjust the compensator if the pump is
rebuilt or replaced. A set screw and lock nut are located on the pump compensator control for this purpose. The relief valve is provided
on this system as a backup pressure control should the pump compensator fail.
To set compensator and relief valve pressures follow these instructions.
1. Place the selector switch on HAND and extend the ram completely.
2. Have an assistant continue to hold the FORWARD button to sustain maximum pressure while you turn the compensator bolt
clockwise to increase pressure to 3200 PSI on the pressure gauge. See Diagram O on the next page for correct location of
compensator adjusting bolt. Never adjust the torque limiter bolt without contacting an EXCEL Manufacturing
representative. (Torque limiter found on Vickers Pumps.)
If this pressure cannot be attained, then the relief valve is bypassing.
3. Turn the relief valve adjustment clockwise 1 or 2 turns and then continue adjusting the compensator screw to reach 3200 PSI on
the pressure gauge.
4. Turn the relief valve adjustment counterclockwise until the pressure on the gauge drops just slightly below 3200 PSI. Lock relief
valve jam nut.
5. Turn the compensator adjustment counter-clockwise until pressure drops to 3000 PSI. Tighten the compensator lock nut.
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