Operation Of The Pump; Operation With Closed Valves, Minimum Flows - Packo AX Instruction Manual

oil reservoir (installed during transport) must be
removed and replaced by a plastic delivered plug
with balance hole.
For VDK pumps with mechanical seal in oil bath,
remove the solid plug on the oil bath (installed
during transport) and replace it with the supplied
dipstick. Check the oil level in the oil bath with
4.9. Starting the pump
If the pump has not worked for a long time, fi rst
check by hand that the impeller turns freely.
• For types FP, ICP, NP, CRP, IRP, IFF, MFF,
MCP, MFP, MWP, PRP, FMS, NMS, VDK,
VPC, FPP, IPP and PHP: ensure the pump
and suction pipe are fi lled completely with
liquid and all valves in the suction pipe are
completely open. Check that there are no
leakages. Never start a leaking pump or a
pump in a leaking installation! It is best to
start the pump with the valve in the discharge
pipe almost closed. After about 10 seconds
(for pumps started with a frequency conver-
ter when the pump has reached the nominal
speed) open the valve in the discharge pipe
slowly until the desired fl ow is reached. As
the valve is opened more, the current will
increase. Check that the measured current
is not higher than the nominal current on the
nameplate of the motor.
• Types MSP: ensure there is enough liquid in
the pump casing. If the pump has been previ-
ously used and was not drained via the drain
plug, this is automatically the case. Before the
fi rst start up and every time the pump casing is

5. Operation of the pump

The pump must never run without
liquid.
5.1. Operation with closed valves, minimum fl ows
Operation with a closed valve in the discharge
pipe is to be avoided. Due to internal friction
the dipstick. The minimum level is the bottom
of the dipstick, the maximum level is the upper
hole. The oil bath is Factory fi lled with "Black
Point PL 15" manufactured by "Van Meeuwen".
An alternative type of oil with a viscosity between
15 and 100cP can also be used. Do not mix two
different types of oil.
drained via the drain plug, fi ll the pump casing
manually. The self-priming pump can prime
the liquid in the suction pipe itself, only if the
pressure on the outlet of the pump is zero. This
means the valve in the discharge line should
be opened and there must be no pressure in
the discharge line. Check that there are no
leakages. Never start a leaking pump or a
pump in a leaking installation!
• Types AX: ensure the pump and suction pipe
are fi lled completely with liquid and all valves
in the suction pipe are completely open. Check
that there are no leakages. Never start a leak-
ing pump or a pump in a leaking instal-
lation! It is best to start the pump with the
valve in the discharge pipe completely open.
After about 10 seconds (for pumps started
with a frequency converter when the pump has
reached the nominal speed) close the valve in
the discharge pipe slowly until the desired fl ow
is reached. As the valve is closed more, the
current will increase. Check that the measured
current isn't higher than the nominal current
on the nameplate of the motor.
In the event of cavitation, the pump
must be stopped immediately.
of the liquid in the pump, the temperature will
rise quickly. The liquid inside the pump can
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