Vestil HDC-900 - Manual (Page 3)

OPERATING INSTRUCTIONS
The HDC-900 is equipped with a momentary contact control. This relieves the operator from having
to hold the "Start" button while the unit cycles.
Sequence of Operation:
In order to operate, the crusher must be prepared as follows: 1) place a drum inside the crusher; 2)
close the door; 3) lock the door latch handle; 4) turn the key switch to the appropriate mode; 5) select
“CRUSH” or “COMPACT”; 6) pull out the Emergency Stop button; 7) momentary press the cycle “START”
button to activate the crush/compact cycle.
The direction of the platen's travel will be determined by its starting position -- if it is fully raised to the
top of the cabinet, the platen will move down to crush a drum; otherwise, the cylinder will raise the platen
until it finally is all the way up and in its starting ("home") position, at which point the power unit will turn off.
Pressing the cycle start button again will cause the platen to move downward. The operator must hold the
button for a few seconds to latch the circuit.
When the crusher is in its "home" position and the cycle start button is pressed, the cylinder pushes
the platen down onto (or into) the drum. In order to achieve a short cycle time, both sections of the pump
in the power unit drive oil to the cylinder until the cylinder pressure reaches approximately 1000 PSI. At that
time, the higher-displacement section recycles oil to the reservoir while the low-displacement, high-pressure
section continues to pump oil to the cylinder, i.e. a typical High-Low circuit.
As the platen crushes or compacts the drum to a height of about 6 inches, the cylinder pressure
increases until it reaches the set-point of the appropriate pressure switch. The valve shifts to center and a
timer activates to control the period of decompression. Once the period ends the directional valve shifts
and reverses the direction of oil flow to the cylinder. Reversing the flow of oil raises the platen to its starting,
or "home" position. When the cylinder returns the platen all the way to the top of the cabinet, the power
unit turns off. At this point, the cabinet door can be opened to remove the drum.
If the unit needs to be stopped at any point during its cycle, the operator can depress the red
emergency stop button located on the control panel. This stops the motor and prevents the unit from
cycling any further. To return the platen to its starting ("home") position, pull the emergency stop button out
to release it and depress the cycle start button again. This will cause the platen to ascend back to the
starting position. To cycle the unit again, simply depress the cycle start button.
RESPONSIBILITIES OF OWNERS/USERS
It is the responsibility of the owner/user for the following:
1.) Inspected and maintain this product according to the guidelines in this manual.
2.) Any unit not in normal operating condition should immediately be removed from service and remain
out-of-service until it is returned to normal
operating condition.
Unsafe conditions include, but are not limited to, the following: excessive hydraulic or air leakage, missing
pins, or fasteners, any cracked or deformed structural members, cut or frayed hydraulic, electric or air lines,
and damaged controls or safety devices. All repairs and maintenance must be performed by qualified
personnel.
3.) Unit should only be used by authorized personnel. All operators must read and understand all operating
procedures and safety guidelines in this manual prior to using the crusher for the first time.
4.) Operator should verify that all safety features function properly before each use.
5.) Any modifications to the unit must be approved in writing by the manufacturer.
Ordering Replacement & Spare Parts
Our company takes pride in using the finest available parts for our equipment. We are not responsible for
equipment failure resulting from the use of unapproved replacement parts. To order parts for your
equipment, contact Customer Service at the factory. In any correspondence with the factory please
include the Serial Number which is inscribed on the nameplate of the piece of equipment. Use only the part
numbers provided in this Owner's Manual. When ordering parts for AC power units please indicate the
motor phase and voltage that the equipment is operating on. Ordering Replacement or Extra Parts.