Visit our homepage for additional support
parker.com/pmde
Bulletin MSG30-3245-INST/UK
Installation and
start-up information
PV series
Design series ≥ 44, PVplus
Effective: December 20, 2018
Supersedes: July 1, 2010
Variable displacement
axial piston pump
Bulletin MSG30-3245-INST/UK
Installation Manual
Axial Piston Pump
Series PV, series 44 and higher
Contents Page
1. Installation and start-up ............................................................................................... 3
2. Displacement adjustment ............................................................................................ 6
3. Standard pressure compensator, code ...MMC ........................................................... 6
4. Standard pressure compensator with D03 interface, code ...MM1 .............................. 7
5. Standard pressure compensator for accessory mounting, code ...MMZ ..................... 7
6. Remote pressure compensator, codes ...MRC, ...MR1 and ...MRZ ............................ 8
7. Load sensing compensator, codes ...MFC, ...MF1 and ...MFZ ................................... 8
8. Two spool load sensing compensator, codes ...MTP and ...MTK ................................ 9
9. Horse power compensator, codes ...*L*, ...*C* .......................................................... 10
10. Compensator accessories ......................................................................................... 11
10.1 Pressure relief pilot valve, code PVAC1P... ................................................................ 11
10.2 Multiple pressure pilots PVAC1E..., PVAC2P..., PVAC2E... und PVAC2M... .............. 11
11. Trouble shooting guide .............................................................................................. 12
Note: The compensator ordering code is represented by
the last three digits of the pump ordering code (digit 13 to 15).
Note
This document and other information from Parker Hannifin GmbH & Co KG, its subsidiaries, sales offices and authorized distributors provide product or system options for further
investigation by users having technical expertise. Before you select or use any product or
system it is important that you analyse all aspects of your application and review the information concerning the product or system in the current product catalogue. Due to the variety of
operating conditions and applications for these products or systems, the user, through his
own analysis and testing, is solely responsible for making the final selection of the products
and systems and assuring that all performance and safety requirements of the application are
met. The products are subject to change by Parker Hannifin GmbH at any time without notice.
2
Parker Hannifin
Pump & Motor Division Europe
Chemnitz, Germany
Bulletin MSG30-3245-INST/UK
Installation Manual
Axial Piston Pump
Series PV, series 44 and higher
1. Installation and start-up
For a safe and disruption free operation of any
machine or system a careful installation and start
up according to the manufacturers instructions is
mandatory.
Hydraulic systems can be designed for many totally different functions and they require consequently
different start up procedures. The hydraulic pump
is in this respect only one, but nevertheless a very
important component of the whole system.
A general start up instruction therefore can give
many helpful hints but it needs to be completed by
specific additions depending of the individual nature
of the system or power unit.
During installation and start up the following steps
need to be carried out carefully:
Visual inspection
Make sure that all components of the shipment are
complete, free of any damage, free of outside contamination and properly protected against ingression
of contamination.
Cleanliness
Contamination of any kind is the enemy of any hydraulic component. It is still the number one cause
for component failure. Therefore maximum care
and cleanliness are required during all handling
and managing of parts that come in contact with
the hydraulic fluid. All ports of the pumps and other
components must be covered until pipes or hoses
are mounted to them. Perform assembly preferrably
in a dry and dust free room. Use only suitable tools.
Installation
Installation horizontal or vertical, avoid rigid connection from pump to reservoir cover or frame and to inlet
and outlet piping to prevent excitation of the whole
system due to pump vibrations.
Suction port
Position to the side or to the bottom, max. fluid velocity
approx. v = 1.0 m/sec, cut suction pipe inlet under 45°.
Minimum distance from bottom 2 - 3 times diameter
and, even at lowest fluid level, approx. 200 mm below
fluid level. Inlet pressure, even during compensation,
never should drop below 0.8 bar (absolute).
Absolute gas tight connection (risk of cavitation,
noise). Air bubbles due to vacuum in the inlet can
destroy pumps within a short time due to cavitation
erosion. Suction pipe should be as short as possible.
Use only clean, low pressure pipe, avoid sharp elbows and any restriction of cross section.
The suction pipe must have access to clean,
cooled and filtered fluid, free of air bubbles. No turbulences or high flow velocities should occur at the
tube inlet. Therefore position inlet as far as possible
away from return line and drain line. Make sure that
the fluid circulation in the reservoir does keep return
flow from suction pipe inlet. In case of positive head
use shut off valve in the inlet, monitored with proximity
switch or equivalent to avoid start up of motor when
valve is closed. When installed into the reservoir use
short suction pipe with pipe end cut under 45°.
Pressure port
Select correct pressure rating for pipe, hose and
connectors. Take pressure peaks into account.
Dimension the piping according to the port size.
Prevent excitation of the system by using flexible
port connections.
Drain port
Always use highest possible drain port of the pump.
Drain port must be higher than pump centerline or
install additional air bleed line. Never combine pump
drain line with other return lines and/or drain lines.
Pump shall not be able to run empty. Max. allowable
case pressure ≤0.5 bar (2 bar peak), also during
compensation.
Use low pressure pipe/hose, as short as possible
and full cross section according to port dimension.
Do not use elbows or sharp corners. When drain port
is on the side of the pump drain line should have
bridge higher than pump top (also when installed
in reservoir). Drain pipe must end at least 200 mm
below fluid level even at lowest filling level. Never
let drain flow go direct into suction area of reservoir
(temperature, air bubbles). Max. length 2 m, otherwise
use larger pipe diameter than port size.
Note: During operation of PV pumps of all sizes
under the following conditions:
Q ~ Q
p
P
(e. g. low pressure circulation) the drain flow can
max
< 2 bar absolute
inlet
< 25 bar
outlet
change direction. Fluid is taken from the case into
the piston mainly through the decompression orifice
and across the slippers. There is a danger that the
pump case runs dry, the pump overheats and the
bearings lack of lubrication when the fluid is removed
from the pump case.
Therefore the drain pipe must be able to take
fluid from the reservoir. That means: The drain line
must end below fluid level, and a check valve in the
drain line is not permissible. If it has to be installed for
whatever reason the case needs to be flushed with a
flow of 10 - 15% of the nominal pump flow.
3
Parker Hannifin
Pump & Motor Division Europe
Chemnitz, Germany
Bulletin MSG30-3245-INST/UK
Installation Manual
Port positions for PV (shown for clockwise rotation, for ccw rotation ports are mirrored)
Axial Piston Pump
Series PV, series 44 and higher
L1 drain port
adjustment screw
interface for
compensator
lock nut
gage port
pressure port (outlet)
alternative drain port L2
For side mounting (suction port facing down)
use alternative drain port 1 (cw rotation) or 2
(ccw rotation).
case drain line from drain port
bearing flushing port, covered,
below pump
Interface for
compensator
alternative drain port L3
Alternative drain port
Drain port
suction port (inlet)
bearing flushing line to
bearing flushing port
main flushing line to alternative drain port 1, 2
* PV016-092+PV270-PV360 DS45
Port L1 on top ; L2,L3 at the side
L4 at bottom (standard: PV270-360)
Gage port
Flushing port, covered
below pump
Pressure port (outlet)
Suction port (inlet)
* PV140-PV180-KS44
Ports L1/L2 at topside,
L3 at the bottom, L4 at the side (Standard)
4
Parker Hannifin
Pump & Motor Division Europe
Chemnitz, Germany
Bulletin MSG30-3245-INST/UK
Installation Manual
Flushing port
The PV pumps of design series 44+ are equipped
with three drain ports*. In addition pumps with seal
option W and P, all pumps PV140 - PV360 and pumps
with X-modification X5830 (bearing flushing port)
are equipped with a flushing port for front bearing
and shaft seal. The flushing flow can - depending on
the actual working conditions - be used to keep the
pump case filled, to warm up the pump (during cold
temperature operation) or for better heat dissipation
e. g. for operation with HFC fluids (water glycole) to
keep the case fluid temperature in the allowed range.
Permanent dead head operation ( >15 min) either for
pumps of frame size 3 and larger (PV063 and higher)
or at high input speeds above 1,800 rpm requires
flushing of the pump case.
Flushing should be taken from the filter/cooling
circuit (e. g. pre-loaded return line). Recommended
flushing flows see following table.
PV016 - PV028 4 - 6 l/min
PV032 - PV046, PV076 5 - 8 l/min
PV063 - PV092 7 - 10 l/min
PV140 - PV180 9 - 12 l/min
PV270 - PV360 13 - 17 l/min
(flushing flow for front bearing: 10 - 15% of the total
flushing flow)
Drive input
For direct drive use elastic coupling free of axial
and radial reaction forces. Please follow strictly the
instructions of the coupling supplier regarding axial
clearance, axial displacement and angular tolerances. Couplings never shall be mounted using a
hammer. Threads in the shaft end allow smooth
mounting of the coupling.
The drive shaft should only carry true torque.
Contact Parker for allowable side loads or axial forces.
PV pumps are normally for one direction of rotation
only. Therefore check rotation of drive motor prior to
installation.
Electrical interface
Check voltage, current, phase and connection properties. Verify direction of motor rotation.
Fluid reservoir
The reservoir needs to meet all system requirements
concerning design, size, location and porting. Beside
beeing reservoir for the hydraulic fluid, the tank also
supports heat dissipation, air removal, water removal
and contamination sedimentation. Often the reservoir
also is the fundament for the motor pump unit. In this
case the separation of pump and remaining structure by elastic means is mandatory to avoid noise
and vibration being induced into the frame work.
The reservoir needs to be carefully sealed against
Axial Piston Pump
Series PV, series 44 and higher
ingression of contamination and water. A level indicator and thermometer should be placed in an easily
accessible location.
Fluid content (general rule): stationary systems 3
to 4 times pump nominal flow, 1 times or even smaller
in mobile systems.
Filling of the system
Use only high quality mineral oil based fluids, like
HLP oils according to DIN 51524 part 2. For other
fluids (HFC, HFD, bio degradable or synthetic fluids)
please contact Parker and review the Hydraulic Fluids
Information in Catalogue 2500/UK.
Operation viscosity should be 16 to 100 mm²/s, optimum viscosity range is in the 20 to 40 mm²/s, max.
viscosity for short time up to 320 mm²/s.
Because of the possibly uncompatible ingredients
fluids should not be mixed (separation of fluid, reduction or loss of fluid properties).
Pay highest attention on cleanliness!
Fill system only via a filtration device. Use filtration
unit, when basic contamination of the refill fluid exceeds class 10 according NAS 1638 (contamination
level 21/19/16 according to ISO 4406). Hydraulic
fluid supplied in barrels typically exceeds these contamination levels.
Filtration
Filtration is the most important factor to the operational life of the hydraulic system. Statistical analyses indicate, that contamination is by far the most
important reason for system or component failure.
Use return line, pressure and/or bypass filtration.
Bypass filtration usually is most efficient. For general
purpose hydraulic systems with limited requirements
for operational life contamination level 19/15 according to ISO 4406 should be desired; corresponding filter rating: x = 25 µm ( b
Cleanliness level for systems with higher re-quirements for operational life and functional safety should
be 18/16/13 according to ISO 4406; corresponding
filter rating x = 10 µm ( b
Use filter with indicator or electrical signal when
capacity limit is approached.
Suction filter should be avoided. Suction conditions will be affected. Filter can be blocked and cause
cavitation and severe pump damage. When used, a
vacuum sensor with shut off function is mandatory.
Properly dimensioned breather rating ≤10 µm
should be used. Observe min. and max. fluid level;
consider exchange volume with cylinders in the
system.
Filling of pump case
Pump case must be filled via the drain port, to ensure
lubrication, sealing and smooth start up.
≥75 ) according to ISO 4572.
25
≥75 ) according to ISO 4572.
10
5
Parker Hannifin
Pump & Motor Division Europe
Chemnitz, Germany
Loading...