19121090 / 10.12.2019 / 9 - 16
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www.victorpumps.com
2. First start-up
Use the pump only within the levels prescribed by the performance curve, technical data and
instructions! The liquid should never be pumped to the limits of vaporization, crystallization,
polymerization or solidification.
The pump material must be compatible with the pumped liquid. The pump manufacturer is not
responsible for damage caused by incompatible materials.
For the first start-up the pump casing must be filled with a liquid that will be pumped. Without
this liquid the pump cannot self-prime. This also prevents dry run and potential damage to the
pump. Open the plug located in the upper part of the pump casing. Fill the pump completely
with the liquid to be pumped. Close the plug.
After the first start-up, there will always be enough liquid to safely restart the pump.
Check that the direction of rotation is the same as indicated by the arrow on the back of the
pump (clockwise if viewed from the shaft or motor side).
Open all valves to avoid damaging the mechanical seal.
If the suction line is empty, the pump first sucks in air and then the liquid.
Start the pump and after a few minutes check that the pump is working as expected.
CAUTION Any change in normal working conditions (increase in power consumption, temperature,
vibration, noise, etc.) or any alarm signal in the system monitoring system point at a
malfunction. Immediately inform the maintenance manager in order to prevent the problem
from getting worse, directly or indirectly causing serious bodily or material harm. If in doubt,
stop the system immediately!
If present, check the correct operation of the temperature sensor.
Check the operation and noise level of the pump starting from commissioning at the following
time intervals: 10 min. / 1 hour / 1 day / 1 week / 1 month. The check can then be carried out
at monthly intervals, unless the conditions of use change.
3. Start-up
Start and stop the pump as required. The pump is designed for 6 starts an hour. More frequent
starting cycles must be approved by the pump manufacturer.
If the suction line is empty, the pump first self-primes air and then the liquid.
If the pump stops, the built-in non-return valve (if present) prevents the backflow of the liquid.
Check the operation and noise level of the pump starting from commissioning at the following
time intervals: 10 min. / 1 hour / 1 day / 1 week / 1 month. The check can then be carried out
at monthly intervals, unless the conditions of use change.
CAUTION Do not leave water in the pump casing during the cold season! Water could freeze and break
the pump casing!
4. Operating problems
THE PUMP DOES NOT START.
(a)Air infiltration along the suction pipe (through quick-fit connections, flange gaskets,
threaded fittings, hose clamps, hoses, etc.). It is not easy to identify this problem. Try to
remove the suction hose from the suction port, start the pump and check if the pump sucks
by resting one hand on the suction port.
(b)Liquid level inside the pump casing too low, or pump casing empty.
(c) Wrong direction of rotation. Speed too low.
(d)Overpressure in the delivery line. The air is not vented freely. Vent the air through the filling
port or install an automatic air-relief valve.
(e)Overheated liquid in the priming chamber of the pump. Wait for the liquid to cool down or
replace it with cold liquid.
(f) Air penetrates through the seal due to lack of lubrication or damage to the seal. Replace
the mechanical seal.
(g)Casing worn out by abrasive liquids.
