First Start-Up; Operational Checks - Danfoss Vickers PVM User Manual

User Manual
ATEX / UKEX Certified Variable Axial Piston Pumps for Industrial Applications – PVM 18 – 141 cc

First Start-Up

Make sure the reservoir and pump housing are filled with fluid and the inlet and outlet lines are open and
1.
unobstructed.
Start the prime mover at reduced speed. Once the pump is started it should prime within a few seconds.
2.
If the pump does not prime, check to make sure that there are no restrictions between the reservoir and
the inlet to the pump, that the pump is being rotated in the proper direction, and that there are no air
leaks in the inlet line and connections. Also check to make sure that trapped air can escape at the pump
outlet.
After the pump is primed, operate for five to ten minutes (unloaded) to remove all trapped air from the
3.
circuit.
If the reservoir has a sight gage, make sure the fluid is clear – not milky.
To assure best pump performance, run the pump for approximately one hour at 30% of rated pressure
4.
and speed before running at full load.
When running make sure the pump and oil temperature and noise level are sufficiently low. High
temperature or noise level might be symptoms of unforeseen operation conditions that have to be
analyzed and cleared.
Check for system leakage and make sure the system is operating satisfactorily.
5.
To ensure that the contamination in the hydraulic system does not damage the pump; the following
6.
procedure is recommended after a brief period in operation:
a.
b.

Operational checks

The product is a component which requires no settings or changes during operation.
The machine/system manufacturer is responsible for the proper project planning of the hydraulic system
and its control.
Danfoss recommends ongoing tests for optimal pump performance.
Continuously verify that the temperature of the ambient and the operating oil are those initially
1.
determined.
Do not subject the pumps to pressure, pressure drop or speeds exceeding the maximum values stated in
2.
the appropriate catalogs.
Filter the oil to maintain the grade of contamination at 20/18/13 (ISO 4406-1999) or better.
3.
12 | Vickers by Danfoss | January 2024
After a brief period in operation, have a hydraulic fluid specimen analyzed for the required
cleanliness level.
Replace oil filter or change the hydraulic fluid if the required cleanliness level is not reached.
BC479055194216en-000101