Dover Almatec Quattroflow-QF5050 Series Benutzerhandbuch - Seite 14

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Dover Almatec Quattroflow-QF5050 Series Benutzerhandbuch
Version of April 2012
5. Operating troubles, causes and remedial action
No.
Delivery
Pump
Pump
is not
does
does
obtained
not
not
or
start
prime
reduced
5.1 5.2
5.3
1
X
2
X
3
X
X
4
X
X
5
X
X
6
X
7
X
8
X
9
10
X
11
12
13
X
X
14
X
15
X
16
X
17
18
X
X
19
20
X
All manuals and user guides at all-guides.com
Operating troubles
Pressure
Irregular
Pump
head is
pump
operates
not
delivery
noisily
obtained
5.4
5.5
5.6
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Causes and remedial
The 4-piston diaphragm pump
Motor
operates trouble-free at any time
Pump
gets
provided they are applied according to
is
too
the operating conditions mentioned in
leaky
warm
If you have any questions, please
5.7
5.8
The screws of the pump-chamber
X
maybe not tightened enough. Fix it!
Check the direction of flow showed by
the arrow on the pump, in case of
wrong way, turn the pump head
Check suction pipeline and TC- seals
Check suction head-increase suction
Check viscosity of liquid pumped.
Check pump speed. Control speed of
drive motor. Check voltage and
Avoid air inclusions in the liquid to be
Check pressure head-open valve in
discharge line completely, remove
obstruction in discharge line
Pressure line completely or partly
X
clogged Diaphragm maybe broken
The diameter of the pipes in suction
or pressure line are to small
Check the coupling halves. They must
be fixed with at least 2-3mm space.
Check longitudinal play of coupling rod
pins. The spider might be worn.
Check whether foreign bodies in pump.
Disassemble pump, remove foreign
bodies, replace defective parts
Pump stopped by the Thermistor
switch. Please allow the motor to cool
down – please reduce the power
Bearings are worn or defective.
Disassemble pump, replace the shaft –
The valves are dry (i.e. not in use for a
long time), deformed or worn. Change
valve or wet the pump.
The diaphragm is burst ( the discharge
X
pressure was too high) - replace it with
O – rings between valve plate and
X
pump housing are defective - replace
Align coupling accurately
The clamping ring screw got loose – fix
it! See 4.2 Mount the pump chamber
action
this manual.
contact Quattroflow.
for tightness
line cross section.
frequency
pumped
Change diaphragm!
consumption.
bearing unit
PSKITQ20k
it with PSKITQ4k
(picture 2 )
Page 14 of 16