Commissioning; Pump Priming - Kripsol KNG Serie Manual De Instrucciones

All pipe systems containing water must be equipped with valves to prevent flooding during pump
maintenance.
Never use a pipe with a diameter of less than ø50 (ø1-1/2") on the intake of a pump with a power
rating of up to 1 CV, or a pipe with a diameter of less than ø63 (ø2") on the intake of a pump with
a power rating above 1 CV.User larger pipes whenever needed to maintain the water speed below
1.2 m/s (4 feet per second). The intake pipe must be one continuous run from its starting point to
the pump. In order to prevent air pockets, the intake pipe must never be positioned higher than the
water level or the level of the pump. Whenever reducers are required to connect the pump, we
recommend the use of concentric reducers.
DISCHARGE
In order to reduce load losses, we recommend the use of pipes of a larger diameter than the pump
discharge and the use of as few connection elements as possible. Connection elements that may
cause air pockets should not be used under any circumstances.
The diameter of the pipes used must be such that it ensures that the water speed remains below
2 m/s (7 feet per second).

7. COMMISSIONING

Before turning on the mains power to the pump unit, ensure that the electrical conditions are
correct and manually check that the pump has not seized.

7.1 PUMP PRIMING

Ensure that there is no pressure in the filter, pump or pipe system.
Never run the pump when dry. The water acts as a coolant for the mechanical seal. If the
pump is operated when dry, the mechanical seal may be damaged, causing leaks, flooding and
rendering the guarantee null and void.
●
Re-filter to close the manual air output valve when the water flow is constant (there is no air)
on the valve discharge. Failure to carry out this task may result in injury.
●
If the water level is above the level of the pump, ensure the cover is hermetically sealed and fill the
pump by slowly opening the stop valve on the intake whilst keeping the discharge valve open.
●
If the water level is below the level of the pump, remove the pre-filter cover and fill with
water up to the intake point. Replace the cover,ensuring it is sealed correctly.
●
Do not start the pump without the hair and lint filter, since it could cause an obstruction and
block the pump.
●
Check that there are no leaks on the pump or the filter. If there are signs of leaks,
DO NOT START THE PUMP.
●
The pump is self-priming and uses pipes with a diameter of less than ø50 (ø1-1/2") for pumps
with a power rating of up to 1 CV, or a pipes with a diameter of less than ø63 (ø2") for pumps
with a power rating above 1 CV. Start the pump and wait until the pump is primed, this can take
up to 5 minutes. The priming time will depend on the vertical and horizontal length of the intake
pipe. If the pump does not self-prime, stop the pump and investigate the cause. Ensure that the
intake and discharge valves are open when the pump is in operation.
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