Disturbance, Causes And Fault Removal - Speck pumpen V Série Mode D'emploi

OPERATING INSTRUCTIONS
conditions. In case the operating liquid should
be very hard water or a medium charged with
contaminations, the vacuum pump as well as

Disturbance, Causes and Fault Removal

9
Disturbance
pump runs loudly
pump does not reach the
vacuum capacity
(pressure/volume)
pump is blocked
power input of pump is too
high
when running with lower suction
pressure than indicated (also at
closed suction side) or when the
percentage of steam in the
medium is too high, a grating
noise is caused
quantity of fresh liquid F is too
high
leakage in system
quantity of operating liquid too
small
temperature of operating liquid is
too high
specified
gas resp. liquid channels are
closed
mechanical seal is leaking
quantity of discharge liquid A is
too low
corrosion between
casing
ice in pump
impurities,
pump
quantity of operating liquid too
high
density resp. viscosity of liquid
too high
frictions between impeller and
inter casing
the attached separator have to be rinsed from
time to time or possibly to be opened and to be
cleaned.
Cause
remedy see 7.2
liquid in medium D:
check position of regulating
valve, adjust it
shut-off device is opened
incorrect: check system, seal
the leakages
check pipes and position of
regulation valve, adjust it
The characteristic curves are
referring to water with 15 °C
ring liquid so that at higher
operating liquid a reduction of
the vacuum and also the
suction
caused. (Reduce the tem-
perature by suitable means.
disassembly the pump and
especially clean the channels
change mechanical seal
check discharge pipe on flow-
rotor and eliminate by use of anti-rust
liquid
ring
heaten it carefully, thaw it
foreign bodies in disassemble and clean the
pump
adjust the regulating valves
the performance data refer to
water(1000 kg/m
bigger density resp. viscosity
require higher performance of
shaft.
liquid or bigger motor power
to be considered
disassemble the pump, clean
it and adjust the correct play
26
Action
capacity will be
liquid is congealed:
3 2
, 1 mm /s),
Different operating