Frequently Asked Questions, Causes And Actions Vacuum Plate 300 - Leister VACUUM PLATE 300 Operating Instructions Manual

8. Frequently asked questions, causes and actions VACUUM PLATE 300

Do not allow test pressure to build up
• Check the flatness of the membrane while pressing the VACUUM PLATE. The VACUUM PLATE can compensate
an unevenness of approx. 10 mm via the sealing lip (7). There is a risk of leakage if there is a higher level of
unevenness.
• Check whether the sealing lip (7) is damaged. If the sealing lip is damaged, there is a risk of leakage.
• Filter plate (4) clogged. Clean the filter plate with a brush with plastic bristles.
Diaphragm is touching the sight glass (6)
• Reduce the pressure with the pressure adjustment valve (Vari-Flow Valve) (9).
Device-protective circuit-breaker (13) trips during
operation or does not lock into place (recognizable
by protruding reset button)
Causes
Ambient temperature too high (> 60°C)
Defective vacuum motor
Excessive on-time
Action
Allow the device to cool down. Then press the reset
button on the device protection switch and repeat the
process.
If the device circuit breaker switches the device off
again immediately after resetting, the device must be
inspected by an authorized Leister service center.
The appliance may only be operated at the prescribed
intervals
13