Diaphragm Vacuum Pumps UN012, UN024, UN036_I
Operation
9
WARNING
Hazard of the pump head bursting due to excessive
pressure increase
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Do not exceed max. permissible operating
pressure (see chapter 9).
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Monitor pressure during operation.
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If the pressure exceeds the maximum
permissible operating pressure, immediately
switch off pump and eliminate fault (see chapter
7).
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Only throttle or regulate the air or gas quantity in
the suction line to prevent the maximum
permissible operating pressure from being
exceeded.
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If the air or gas quantity in the pressure line is
throttled or regulated, make sure that the
maximum permissible operating pressure is not
exceeded.
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Ensure that the pump outlet is not closed or
constricted.
When the pump is at a standstill the inlet and exhaust must be at
normal atmospheric pressure.
When the operation of the pump is interrupted by the thermal
switch, the pump will re-start automatically after cooling down.
Take all care necessary to prevent this leading to a dangerous
situation.
Diaphragm and valve plates are the only parts subject to wear.
Wear is usually indicated by a drastic reduction in the pneumatic
performance. When replacing parts proceed as described in
section 5.
Ambient conditions: see section 1.3.
Operating pumps with electronic temperature control (.26
designs)
