After Use; Troubleshooting - Holmatro SCV 12 Manual

EN
• Connect the hose of the max. 12 bar compressed air source to the inlet air coupling of the xCV 12.
(Fig. 2,4)
The control unit is now ready for use.
5.2 Use
• The SCV (DCV, TCV, QCV) 12 consists of three-way valves with automatic return to their "0"
positions.
• The tool is filled with air by depressing the "+" push-button (Fig. 2,1).
• The tool is depressurized via the discharge filter by pressing the "-" push-button (Fig. 2,2).
• The control unit is protected against overpressure by one pressure relief valve (part is not shown,
safety valve is located internally). This allows air to be relieved at a set pressure of approx. 12.5 bar.
• The pressure gauges indicate the compressed air pressure of the tool.
5.3

After use

• Release all air from the tool and hoses by depressing the "-" push-button.
• All hoses can be disconnected when there is no more air to be relieved.
• Inspect the control unit for damage after each use.
6

Troubleshooting

6.1 General
Consult the Holmatro dealer if the listed solutions do not give the desired result, or in case of other
problems. For malfunctions or repair, always specify the model and serial number of the equipment.
6.2 Lifting bags do not lift
/i
Possible cause
The air source pressure is too low.
The air pressure downstream of the control unit is
too low.
The load is too heavy.
A lifting bag deflates while the "-" of the control
button is not pushed down.
6.3 Air leakage in the system
/i
Possible cause
The pressure relief valve is faulty.
The connections are faulty.
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Solution
Check the pressure.
Check the pressure.
The specified maximum capacity of lifting bags is
only achieved in virtually flat condition. The lifting
capacity decreases with increasing height.
Check the valve of the control device.
Solution
Check the pressure. Have the pressure relief valve
reset if it shows leakage when the pressure is too
low. Refer to 7.3
Check the connections of the couplings to the
hoses.
Check the joints between the couplings.
xCV 12