Parker PV046 User Manual

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Bulletin MSG30-3254-INST/UK

Installation and setup

manual

Electro-hydraulic control

for serie PVplus

Pump design series 44-45-46-47,

compensator design series 45

Eective: July 1st, 2021

Supersedes: March 1st, 2017

Visit our homepage

for additional support

parker.com/pmde

Table of Contents

Other manuals for Parker PV046

Installation And Start-Up Information16 pages

Questions and Answers:

A
Angela OlsonAug 21, 2025
What to do if my Parker PV046 drive motor does not turn?
- E
  Edward NelsonAug 22, 2025
  If the drive motor of your Parker Water Pump isn't turning, it could be due to a few reasons. First, check the motor connections and the electrical power supply to ensure they are correctly connected and functioning. It's possible that one of the three phases has failed. If the motor connections and power supply are fine, the pump may be mechanically blocked, in which case you should send the pump to the factory for service.
B
Brittany FinleyAug 25, 2025
Why Parker Water Pump drive motor turns, but pump does not turn?
- J
  Jacqueline HinesAug 25, 2025
  If the drive motor of your Parker Water Pump is turning but the pump itself isn't, the coupling might not be mounted correctly. Check the coupling assembly and correct it.
J
John NashAug 26, 2025
What to do if Parker PV046 Water Pump drive motor turns and pump turns, but there is no output?
- J
  jo66Aug 27, 2025
  If the drive motor and pump of your Parker Water Pump are both turning, but there's no output, consider these possibilities: Ensure the direction of motor rotation is correct by changing it if necessary. Check that the fluid reservoir is filled to the required level and increase the suction pipe length if needed. Inspect the suction line for blockages and open any valves in the line, ensuring they have electrical indicators. Also, check the suction filter. Seal the suction line to prevent air from entering. Unload the pressure port and system before starting, and bleed air from the pressure line if the pressure line/system cannot bleed air out.
S
sheltonkatelynAug 28, 2025
How to fix unstable compensator on Parker Water Pump?
- B
  Brian ScottAug 28, 2025
  To address an unstable compensator in your Parker Water Pump, consider these steps: First, clean the hydraulic system and compensator valve, as the compensator spool might be sticking due to hydraulic fluid contamination. Next, adjust the compensator differential pressure to the required setting, as it may have changed (becoming too low or too high). Ensure the correct pilot orifice and pressure pilot valve are selected as recommended. If dealing with a dynamic critical system, such as a pressure compensator combined with a pressure reducing valve, use a remote pressure compensator instead of a standard one, and install an orifice in the load sensing line remote from the compensator, as close as possible to the load sensing valve.
B
Benjamin RoyAug 30, 2025
What to do if Parker Water Pump does not compensate?
- S
  Shannon CookAug 30, 2025
  If your Parker Water Pump isn't compensating, check these potential issues: Ensure there is an orifice Ø 0.8 mm in the load sensing line to compensator code MFC. Verify that a pressure pilot valve is connected to the compensator and that the valve opens as required. Confirm that the load sensing line is connected downstream (actuator side) of the load sensing valve. Also, ensure that the pump outlet pressure is at least 15 bar, as the bias spring in the pump cannot be compressed otherwise.
K
kristenbowmanSep 1, 2025
Why Parker Water Pump drive motor only turns at slow speed?
- J
  Joseph PerrySep 1, 2025
  If the drive motor of your Parker Water Pump only turns at slow speed, it could be due to improper motor selection or a hydraulically blocked pump. Start the pump at an unloaded system and consider using a motor with more horsepower. Also, check the function of the pump compensator and start the pump at an unloaded system.
J
Jennifer WalshSep 3, 2025
What to do if Parker Water Pump does not upstroke?
- T
  Todd KellySep 3, 2025
  If your Parker Water Pump does not upstroke and sticks at zero displacement, it could be due to a blocked compensator or an interrupted cable. Clean the hydraulic fluid and compensator valve, as the compensator might be blocked due to contamination. Check the wiring to the LVDT or proportional solenoid to ensure the cable is intact; replace it if necessary.
S
sayalaSep 5, 2025
What to do if Parker PV046 Water Pump does not build up pressure, but delivers full flow at low pressure?
- M
  Melissa MyersSep 5, 2025
  If your Parker Water Pump delivers full flow at low pressure but doesn't build up pressure, here's what you can check: * **Pressure compensator setting:** Adjust the compensator setting to the desired pressure if it's set to minimum. * **Pressure pilot valve:** Install a suitable pressure pilot valve and adjust it to the desired setting if none is connected. * **Multiple pressure pilot selector valve:** Energize the selector valve solenoid if the pump works in stand-by because the valve is not energized. * **Differential pressure:** Check the differential pressure adjustment and correct it if it's too low.
A
ashleytranSep 9, 2025
What to do if Parker Water Pump delivers no output flow?
- E
  Elizabeth HudsonSep 9, 2025
  If your Parker Water Pump delivers no output flow, here are a couple of things to check: * **Motor connections:** Verify the motor connections and check the electrical power supply, as the motor might not be connected correctly or one of the three phases may have failed. * **Mechanical blockage:** If the pump is mechanically blocked, send it to the factory for service.
D
Deborah MeyerSep 12, 2025
Why Parker PV046 does not compensate?
- K
  karenmccoySep 12, 2025
  If your Parker Water Pump does not compensate, here are a couple of things to check: * **Pressure pilot valve:** Connect a pressure pilot valve to the compensator, ensuring the valve opens as required, if no valve is connected or if the valve is blocked. * **Pump outlet pressure:** Ensure the pump outlet pressure is at least 15 bar, as the bias spring in the pump cannot be compressed otherwise.

Parker PV046 Specifications

General

Brand	Parker
Model	PV046
Category	Water Pump
Language	English

Summary

Table of available electro hydraulic controls

Proportional displacement control, code ...FDV

Proportional displacement control with pressure compensation

Proportional displacement control with closed loop pressure control

Basic adjustment

9.1 Basic adjustment of CIP sensor

The contactless inductive position transducer for displacement feedback (CIP) is factory preset.

9.2 Basic adjustment LVDT

The inductive position transducer for displacement feedback (LVDT) is factory preset.

9.3 Basic adjustment control valves

Proportional displacement control does not include pressure compensation; requires protection.

Connecting diagram for proportional displacement control

Connecting diagram for p/Q-control

Cables and connections

Trouble shooting guide

Pump delivers no output flow

Troubleshooting steps when the pump delivers no output flow.

Drive motor does not turn

Drive motor only turns at slow speed

Drive motor turns, pump does not turn

Drive motor turns and pump turns

Pump does not build up pressure, but delivers full flow at low pressure

Pump does not compensate

Pump does not upstroke, sticks at zero displacement.

Compensator is unstable

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