Start-Up Procedure; Pre-Start-Up Controls For Pvm Pump - Danfoss Vickers PVM User Manual

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

Start-Up Procedure

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Vickers by Danfoss | January 2024
The purpose of this section is to indicate the necessary procedures to perform the pump start-up.

Pre-Start-Up Controls for PVM Pump

Before performing the first pump start up, the following points have to be checked.
Hydraulic components must be installed in accordance with their individual instruction.
To avoid contamination, plastic plugs in connection ports must not be removed until just before
connections are made. All inlet connections must be tight to prevent air leaks.
Select the hydraulic fluid as specified in the product catalog.
Make sure the reservoir and circuit are clean and free of dirt/debris prior to filling with hydraulic fluid. Fill
the reservoir with filtered oil to a sufficient level to prevent vortexing at suction connection to pump
inlet. (It is good practice to clean the system by flushing and filtering using an external pump prior to first
start-up)
Make sure the pumps hydraulic connections allow the pumps to rotate in the desired direction. For
pumps with direction of rotation:
Figure 4: PVM (side-ported) Back View, Port Configuration LH/RH
Generic illustration shown (here PVM131/141 side-ported)
Ensure full contact between pump mounting flange and prime mover.
Avoid pressing the pumps into place by tightening the fixing bolts. Avoid unsuitable seal materials, for
example, twine and Teflon, on threaded unions. Use only the seals supplied, such as O-rings, steel
washers.
Make sure that all couplings are completely tightened to prevent leakage.
Do not use more torque than the maximum values given in the instructions.
Before the pump is started, fill the case through the uppermost drain port with hydraulic fluid of the type
to be used. The case drain line must be connected directly to the reservoir and must terminate below the
oil level.
Check to make sure the purity of the oil is greater than 20/18/13 (ISO 4406-1999) and always use a filter
when replenishing the system.
Warning
The pumps must be filled with fluid prior to any load applications
BC479055194216en-000101 | 11