General Pump KEZ Owner Manual v.2 - Manual (Page 13)

GENERAL PUMP
A member of the Interpump Group
KEZ SERIES
In case the pump has not run for a long period
of time, verify the correct operation of the suc-
tion and delivery valves.
10.2 Start-up
1. When starting the pump for the first time, check for
the correct direction of rotation.
2. The pump must be started off-load.
3. Verify correct feeding pressure.
4. During operation check that the rotating speed does
not exceed the rated value.
5. Before putting the pump under pressure let it run for
at least 3 minutes.
6. Before stopping the pump, release the pressure by
acting on the adjustment valve or on any discharging
device, and reduce RPM (diesel applications).
11. PREVENTIVE MAINTENANCE
PREVENTIVE MAINTENANCE
EVERY 500 HOURS EVERY 1000 HOURS
Check oil level Change oil
Check / Replace:
• Valves
• Valve seats
• Valve springs
Check / Replace:
• H.P packings
• L.P. packings
To guarantee pump reliability and efficiency, respect the
maintenance intervals as indicated in the table in fig. 14.
NOTE: Change oil after first 50 hour break-in period. After
first 50-hour oil change, follow this schedule:
12. STOPPING THE PUMP FOR LONG PERIODS
12.1 Inactivity for Long Periods
If the pump is started up for the first time after a
long period from the shipment date, before start-
ing operation check the oil level, check the
valves as indicated in Chapter 10, and therefore
follow the start-up procedures described.
12.2 After Use
After use the pump should be drained. The use
of anti-freeze or preserving solutions is recom-
mended. Any hose connection needing to be left
disconnected should be properly protected and
greased.
13. PRECAUTIONS AGAINST FREEZING
In areas and periods of the year where there is
risk of freezing, follow the instructions indicated
in Chapter 11 (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 un-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
Page 13
f ig. 14
Ref 300665 Rev.C
07-13