Vestil SCTAB-2500-2040-DC handleiding
Handleiding
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Rev. 3/26/2014 SCTAB, manual.doc
Copyright 2014 Vestil Manufacturing Co.
Page 10 of 14
Operation Instructions:
This lift table features an auto-shifting two-speed pump, which means that pump speed is
automatically selected based on the output pressure of the hydraulic system. For example, when the
table is unloaded and consequently pressure in the hydraulic system is low, the pump operates in high
speed mode. Each stroke of the foot pedal pumps approximately 1.2 cubic inches of oil. When weight is
applied to the table, system pressure increases. At pressures in the range of 800-1000 psi the plump
automatically shifts to low speed mode. In low speed mode, less effort is required to move the pedal
because each stroke only pumps ~ 0.44 cubic inches of oil.
The platform will rise with each stroke of the foot pedal. If too much weight is applied to the table,
i.e. weight exceeding the capacity, a pressure relief valve opens and allows oil to flow the hydraulic
reservoir rather than to the cylinder. As a result, the table will not rise until the weight of the load is either
equal to or less than the capacity of the table (1,000 pounds).
To lower the table, press the release lever (see item no. 25 on p. 5, 6). A pressure compensated
flow control valve ensures that the table lowers at a controlled rate. Never increase the pressure relief
setting more than necessary. Never exceed the pressure rating of the components in the hydraulic
system.
Pump Purging Procedure:
Whether your pump is new or used, air is probably trapped inside the pump and must be removed.
When air is present in the hydraulic system, you might notice a spongy feel to the foot pedal when
pressing it. To remove air from the system:
1. Raise the table and install the maintenance prop(s); then lower the table until the tabletop is
entirely supported by the maintenance prop(s);
2. Remove the fill plug from the oil reservoir.
3. Disconnect the hydraulic hose from the port on the cylinder and insert the free end of the hose
into the fill port of the reservoir;
4. Pump the foot pedal several times and pay close attention to the stream of oil flowing into the
reservoir. Pockets of air will escape as oil flows into the reservoir.
5. Once air is completely removed, reconnect the pump to the cylinder by reattaching the hydraulic
hose to the cylinder port.
6. Check all of the hydraulic lines for oil leaks; then return the table to service.
7. Although air has been removed from the pump, air could still be trapped in the cylinder. The next
procedure explains how to remove air from the cylinder.
Cylinder purging procedure:
A bleeder screw is located at the top of the cylinder. The bleed screw includes a hose fitting to allow
attachment of a small diameter hose. By attaching a hose to the screw, any oil that escapes during the
bleeding process can be directed into a container for proper disposal. To bleed air from the cylinder:
1. Raise the table and install the maintenance prop(s); then lower the table until the tabletop is
entirely supported by the maintenance prop(s);
2. Gently pump the foot pedal once;
3. Carefully open the bleed screw. The pressure built in the system from pumping the pedal
causes air (and oil) will flow out of the bleed screw. Pressure will drop as air and oil flow from the
cylinder. To repressurize the system, close the bleed screw and pump the pedal once. Open the
bleed screw again to allow more trapped air to escape;
4. Repeat step 3 until air is completely removed from the cylinder (only oil flows from the bleed
screw);
5. Check all of the hydraulic lines for oil leaks; then return the table to service.
Loading the Table:
The load capacity, which appears on the data label (see p. 10, label 287) of your unit, is the maximum
net weight the table can support. All loads applied to the table must be centered and evenly distributed. DO
NOT exceed the capacity because personal injury or permanent damage to the table might occur.
Bekijk gratis de handleiding van Vestil SCTAB-2500-2040-DC, 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 | SCTAB-2500-2040-DC |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3059 MB |
