11
Between
and
Model
Fastening torque
Notes
[
kgm
]
[
Nm
]
BODY
PORT
LIB-2”
0,2
2,0
Tightens the valve
SUPPORT
BODY
LIB-2”
2,5
25
Tightens the diaphragm
CONNECTING ROD
PLATE
LIB-2”
0,9
9
REDUCER
SUPPORT
LIB-2”
9,38
92
COVER
BODY
LIB-2”
1,13
11,1
Tightens cover and reducer
carter
15. DISPOSAL
In case of demolishing the machine or placing it out of service, differentiate the parts according to the
manufacturing materials and dispose of them complying with the current Standards in the country where
demolition or placing out of service takes place.
16. TROUBLESHOOTING
MALFUNCTIONING
POSSIBLE CAUSE
SOLUTION
The pump works but does
not supply
1.
Excessive suction height.
2.
The suction piping is not airtight.
3.
Blocking of the pump
4.
The suction pipe is not fully
submerged inside the liquid to be
pumped.
5.
The suction filter is blocked
6.
The suction and/or delivery valves
have remained in open position for
the presence of a solid body
1.
Reduce the suction height.
2.
Restore seal of all gaskets of the
piping.
3.
Remove any blocking bodies
inside the pump.
4.
Fully submerge the suction pipe
so it does not suck air.
5.
Clean the suction filter
6.
Remove the solid body
Low flow rate
1.
The rotation speed is too low.
2.
The delivery pipe is undersized or
blocked
3.
Too many curves or delivery pipe
too long
4.
Use of non-reinforced collapsible
sleeve
5.
Damaged pipes
1.
Increase engine rotation speed, if
possible.
2.
Replace the pipe or clean it.
3.
Amend the delivery line
4.
Shorten or install a reinforced
pipe
5.
Replace
Excessive noise
1.Damaging of reducer
of speed
2.The pump is not safely fastened to the
parking stand
3.Suction is blocked
1. Repair of reducer by means of
intervention of staff authorised by
the Manufacturer
2. Ensure the parking stand is blocked
by means of the fixing pin with
insertion of the safety pin
3. Clean piping
There is water above the
diaphragm
1.
The diaphragm is broken
2.
The screws tightening the
diaphragm are loose
1.
Replace the diaphragm
2.
Tighten the screws
…
…
For the functioning defects of the supply motors see the attached instruction manuals.
