ATURIA TK, Instruction Manual

Page: 19 / 32

LTK0E01D 05/2017
19
C
C
H
H
A
A
P
P
T
T
E
E
R
R
1
1
0
0
FAULT FINDING CHART
PROBLEM PROBABLE CAUSE REMEDY
1 .
1.1 Pump and suction pipe not well primed, with
air trapped in the system
Prime again pump and
suction pipe
THE PUMP GIVES
NO WATER
1.2 Air enters the system through suction pipe
open taps or through foot valve not enough
submersed
Correct installation
1.3 Foot valve clogged by mud, leaves or other
debris
Clean foot valve
1.4 Defected foot valve allows water to pass
through with loss of suction power
Repair or change foot
valve
1.5 Too high suction head Correct installation
1.6 Wrong rotation direction See par 5.1.
1.7 The total head required by the system is
higher than rated pump head The pump is not suited to
the duty required
2.
2.1 Foreign bodies at impeller channels or the
same causes as points 1.1, 1.3, 1.5, 1.6, 1.7.
Clean impeller channels.
See mentioned points and
suggested remedies
UNSUFFICIENT
DELIVERY
2.2 Undersized suction pipe or foot valve, or
wrong positioning of suction pipe
Correct installation
2.3 Worn impeller and/or pump casing
Replace impeller Repair
pump casing
(see section 8)
3.
3.1 Liquid viscosity higher than specified or the
same causes as points 1.6, 1.7, 2.3.
Pump not suited for operation
with higher viscosity and/or
see mentioned points and
suggest remedies
UNSUFFICIENT
PRESSURE
4.
4.1 Pump performances are different than rated
Close partially the delivery
gate valve
EXCESSIVE BREAK
POWER
4.2 Liquid SG higher than specified
Pump not suited to the
service/close partially the
delivery gate valve
4.3 Abnormal internal rubbing (rotating parts rub
against fixed parts)
Repair the pump - see
section 8