Operating Manual
V
ACU
M
ASTER
VHB 250-500
Chapter 7
Maintenance
J. Schmalz GmbH
Aacher Straße 29
D - 72293 Glatten
Tel +49 +7443 / 2403 - 0
Fax +49 +7443 / 2403 - 259
http://www.schmalz.de
e-mail: [email protected]
BA 30.30.01.00223
Status 03.2013 / Index 00
Page 15 / 16
7.3 Vacuum Pump
See Operating instructions of the vacuum pump (appendix).
7.4 Suction Pads /
Seals
Remove items and contaminations such as adhesives, glue, saw dust, dust etc.
sticking to the seals at least once a week. Use glycerine to clean the seals.
Immediately replace damaged seals (tears, holes, waves).
7.5 Oil and Water
Separator
Danger
Check the oil and water separator at least once a week.
Let out the condensation water regularly and clean the sintered filter. If the sintered
filter is very dirty, it should be replaced.
Caution
: if the oil and water separator is very dirty, the vacuum at the suction pads
differs from that at the warning device.
The oil and water separator must therefore be cleaned regularly in order to ensure
safe operation of the lifting device.
Do not allow dust to enter into the suction opening when you take out the filter
cartridge.
7.6 Leak Test
Danger
Check the device for leaks once per month.
Place the suction pads on an airtight, smooth surface such as a sheet of
metal.
Switch on the vacuum generation.
Move the manual slide valve to the position "Grip" to grip the workpiece. Switch
off any suction pads which are not in contact with the workpiece.
Caution
: simply grip the workpiece without lifting it, since it may drop from the
suction pads during the test.
Wait until a vacuum of about
–0.7 bar is reached.
Switch off the pump and check that the vacuum does not drop by more
than 0.1 bar within 5 minutes.
If the vacuum pressure drops faster, check:
the suction pads, seals, hoses, connections for damage or leaks,
whether the oil and water separator is dirty or blocked; if so, clean or replace it.
7.7 Inspection by a
Qualified Person
Accident prevention rules require a yearly inspection of lifting device and crane by
a qualified person.
