10
Trouble-shooting
10.1
Hya-Solo DV
NOTE
Before performing any work on the pump's internal parts during the warranty period
please always consult the manufacturer. Our after-sales service will be at your disposal.
Non-compliance will lead to forfeiture of any and all rights to claims for damages.
Pressure booster system cuts out.
Pressure fluctuations on the discharge side.
Pressure booster system does not start up.
Pump running but not delivering water.
Insufficient delivery of pressure booster system.
Discharge-side pressure too low.
Discharge-side pressure too high.
Leakage at mechanical seal.
Motor/pump overheated.
Motor protection switch triggered.
Pressure booster system does not stop.
Excessive starting/stopping of pressure booster system
Motor overheated.
Table 29: Trouble-shooting
A B C D E F G H I
J
K L M Possible cause
Remedy
The pump pressure must be
released before attempting to
remedy faults on pressure-retaining
parts. Disconnect the pump from
the power supply!
X
X
Dry-running protection equipment
not connected.
Connect/bridge.
X
X
Power supply interrupted.
Check and remedy defect.
X
X
X
X Phase failure.
Check individual phases/fuse.
X
X
X
X Motor protection switch tripped or
set incorrectly, or pump has seized
up.
Compare setting with the motor's
rating plate data and set
accordingly;
press reset/fault acknowledgement
key.
X
X
Control current fuse tripped.
Check fuse and replace as
necessary.
X
Lack of water.
Check inlet pressure.
X
X
Inlet pressure higher than stated in
the purchase order.
Fit pressure reducer; contact KSB.
X X X
X X X
Incorrect power supply; wrong
speed.
Check power supply.
X X X X X
X
X X Shut-off valves (partially) closed.
Check, open as necessary.
X X X
X
X
X Pump and/or piping are not
completely vented or primed.
Vent and/or prime.
X X X
X X X
X Defective check valve in the by-pass
line.
Replace.
X
Insufficient inflow.
Restore required inflow; connect
inlet tank.
X
X X
X Pump runs sluggishly.
Have pump repaired by a specialist.
X
Defective mechanical seal.
Replace.
A
B
C
D
E
F
G
H
I
J
K
L
M
10 Trouble-shooting
46 of 56
Hya®-Solo DV
