Trouble Shooting - M&C TEC1 Series Operation Manual

Trouble shooting

Warning
Problem/Indication Possible cause
Pump produces no
flow
Flow, pressure or
vakuum too low
28
High voltage!
Working without disconnecting the power supply may cause an electrical
shock. Disconnect power supply before any assembly, maintenance or
disassembly.
Secure the pump against accidental restart.
No main supply
Connections or lines
blocked.
An external valve is closed or a
filter is blocked.
Liquid (condensate) has col-
lected in the pump head.
Bellows or valves are damaged
or worn out.
The pump is not designed for
these operating parameters.
There is overpressure on the
pressure side and at the same
time vacuum on the suction
side.
Pneumatic lines or connecting
parts have a too small cross-
section.
A leak at the connectors, lines
or pump head. Bellows or
valve plate is damaged or
pump head is contaminated.
MP-
Check/Action
Check power supply; Check power cable for
correct fit.
are Remove blockage.
Open valve or clean contaminated/blocked fil-
ter
Operate pump with air for a few minutes. In-
stall the pump at the highest elevation point of
your system.
Change bellows or/and valves. The valve
plates need to be replaced, when they are <
Compare the actual operating parameters:
pressure, vacuum and capacity with the data
8
Check the pump with pressureless suction
side and compare values with parameter
characteristic graph. If ok: check system pa-
rameters; not ok: see "Bellows or valves are
damaged or worn out".
To measure the performance values, uncou-
ple the pump from the system; even a line
with a too small cross-section or e. g. a valve
installed in the system can change the meas-
ured value considerably.
Seal the leak, tighten the screws, replace
damaged parts, clean or replace contami-
nated parts.
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