General Pump KFZ Owner Manual - Manual (Page 20)

GENERAL PUMP
A member of the Interpump Group
KFZ SERIES
Page 20
12.2 Hoses
a) Before greasing and protecting the hoses according to the previously described procedure, dry the
connections using compressed air.
b) Cover with polyethylene.
c) Do not wrap them too tightly; be sure there is no bending.
13. PRECAUTIONS AGAINST FREEZING
In areas and periods of the year where there is risk of freezing, follow the instructions indicated in Chapter 12
(see paragraph 12.2).
In the presence of ice, in no case must the pump be started until the entire circuit has been completely
thawed out; not complying with this indication may cause serious damage to the pump.
14. WARRANTY TERMS
The duration and the terms of the warranty are contained in the purchase contract. The warranty is void if:
a) The pump has been used for purposes that differ from that agreed.
b) The pump has been fit with an electric or diesel engine with performance greater than that indicated in the table.
c) The required safety devices were not adjusted or disconnected.
d) The pump was used with accessories or spare parts not supplied by General Pump.
e) Damage was caused by:
1) improper use
2) the non-observance of maintenance instructions
3) use not compliant with operating instructions
4) insufficient flow rate
5) faulty installation
6) incorrect positioning or sizing of the hoses
7) non-authorized design changes
8) cavitation
15. TROUBLESHOOTING
The pump does not produce any noise at start-up:
• The pump is not primed and is running dry
• There is no water in the inlet line
• The valves are blocked
• The delivery line is closed and does not allow the air in the pump to be discharged
The pump pulses irregularly (knocking):
• Air suction
• Insufficient feeding
• Bends, elbows, fittings along the suction line obstruct the fluid’s passage
• The inlet filter is dirty or too small
• The booster pump, where provided, supplies insufficient pressure or flow rate
• The pump is not primed due to insufficient head or the delivery line is closed during priming
• The pump is not primed due to valve seizing
• Worn valves
• Worn pressure packings
• Incorrect operation of the pressure adjustment valve
• Transmission problems