Vestil AHLT-3060-3-43 handleiding
Handleiding
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3
Hydraulic Circuit & Component Operation
To raise the deck of the table, press the "RAISE" button of the hand controller. This opens the air motor
supply valve and flowing air turns the hydraulic pump. Oil from the reservoir moves through the suction filter
and into the pump. From the pump, pressurized oil flows through the check valve and then enters the
cylinders.
The function of the check valve is to restrict oil flow to one direction, i.e. towards the cylinders. It
prevents oil from flowing back into the pump circuit when the pump stops running. This traps oil in the
cylinders and maintains the desired elevation of the deck.
If the weight of a load on the table exceeds the capacity of your table, then although the "RAISE"
button might be pressed the deck cannot ascend. Instead, pressure builds in the circuit between the pump
and the cylinders. This pressure causes the "ball" (or "poppet") in the relief valve to unseat and directs the
pump output to the reservoir through the return pipe rather than to the cylinders.
To lower the deck, press the "LOWER" control button. This opens a hydraulic dump valve. The
poppet in the solenoid valve unseats and oil flows from the cylinders through the flow control valve, return
filter, solenoid valve, and the oil return pipe to the reservoir.
The flow control valve controls the lowering speed of the table. It is preset and cannot be changed.
Releasing the "LOWER" control button deenergizes the solenoid and closes the valve poppet. This
prevents oil from returning to the reservoir and consequently the cylinders stop retracting. The deck will
maintain its elevation.
Cartridge Valves
The lowering valve, as discussed above, is of cartridge construction and is virtually maintenance free.
If a malfunction occurs, refer to the trouble shooting section.
To clean the cartridge valve:
1.) Use a thin tool to push the poppet in from the bottom to open the valve.
2.)
Repeat several times while valve is immersed in kerosene or mineral spirits. Blow the valve
dry.
3.)
4.)
Inspect O-rings and the polytetrafluoroethylene (PTFE) extrusion washer.
Reinstall the valve. Tighten the valve in its seat to approximately 30 ft-lb.
Velocity Fuse
There is a brass velocity fuse with a stainless steel spring in the base of each cylinder. The fuse is a
safety feature that activates if a pump failure occurs. If the pump were to fail, the deck would lower much
more rapidly. However, as soon as the descent speed exceeds a preset threshold speed, the velocity fuse
closes and prevents oil from flowing. When the fuse shuts, the platform stops lowering and maintains
position until hydrualic pressure is reestablished. This safety feature reduces the likelihood of personal
injury or property damage as a result of pump failure. To reset the velocity fuse, briefly activate the pump by
pressing the "RAISE" button.
Bekijk gratis de handleiding van Vestil AHLT-3060-3-43, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Vestil |
| Model | AHLT-3060-3-43 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 2909 MB |
