Quattroflow Installation, Operation & Troubleshooting Guide
Rev. 0
Page 24 of 25
www.quattroflow.com
Continuation of Troubleshooting Table 1:
Operating troubles
Cause / remedial action
Pu
m
p
d
o
e
s n
o
t
star
t
Pu
m
p
d
o
e
s n
o
t
p
ri
m
e
Ou
tp
u
t
is n
o
t
o
b
taine
d
Pr
e
ssur
e
h
e
ad
is
n
o
t
o
b
taine
d
Ou
tp
u
t
is n
o
t
co
n
si
ste
n
t
Pu
m
p
o
p
e
rate
s
n
o
isy
/
vi
b
ration
s
Pu
m
p
is
leaky
M
o
to
r get
s t
o
w
ar
m
To
o
h
ig
h
p
u
lsati
o
n
D
iap
h
rag
m
d
am
ag
e
X
X
Bearings are worn or defective and must be replaced.
X
The valves are dry (e.g. not in use for a long time), deformed
or worn. Change valve or wet the pump.
X
The diaphragm is burst
-> replace with respective elastomer service-kit.
X
X
X
X
O–rings between valve plate and pump housing are defective
-> Replace with respective elastomer service-kit.
X
X
The clamping ring screw got loose
-> fix it with the defined torque.
X
Parameters of the control panel are wrong
-> check basic settings.
X
Pump may not start in manual mode if configured for remote
operation (e.g. external 4-20mA signal); check parameter
settings.
X
Pump after SIP cooled down too fast - slow cooling with room
temperature.
X
Too high vacuum on suction side of the pump.
X
Diaphragm are not correctly installed on supports
-> see QF manual.
X
Pump chamber is not completely vented
-> see chapter Start-up operations.
X
Check chemical compatibility of elastomers.
Table 13 Troubleshooting Table 2
