Starke Arvid AB Tel: +46 522 - 22 000 Fax: +46 522 - 22 344
Lyckåsvägen 3
www.starkearvid.se [email protected]e
SE-459 30 Ljungskile
Sida
24
av
25
Leak check
A leak test of the two independently functioning vacuum circuits must be performed at
least once a week. First you should check the entire vacuum circuit with all suckers and
the hose lines.
To do this, it is necessary to set all suckers of the vacuum cross bar on a gas-
impermeable, flat material (for example, a metal or glass sheet) that can be sucked up.
Also set the manual valves (2.1 / 2.2) to SUCTION other. Then the vacuum pumps are
switched on, and when the maximum achievable vacuum, as a rule approx. -0.7 bar in
each vacuum circuit, has been achieved, the pumps are switched off. Read the achieved
vacuum from the vacuum meters (5.1 / 5.2) and record the value in writing. The indicator
of the vacuum meters (5.1 / 5.2) is only should only change slightly within the next 15
minutes, not more than 5%. If the result of this test is positive, the vacuum lifting device is
tight, and you can work with it without risk.
If a leak is detected even in one vacuum circuit, so the device will not function and may not
be put into operation. The leak must be corrected immediately or the porous material re-
placed.
Caution!
-
Always check the operational safety of the pump and the other elements before
starting work / commissioning.
Caution!
-
The device must
NEVER
be commissioned if only
one
of the vacuum circuits is
functioning.
