Dynaset HPW 90 - User Manual

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HPW 90

HPW 130

HPW 180

HPW 200

HPW 250

HPW 220

HPW 300

HPW 320

HPW 360

HPW 420

HPW 460

HPW 520

HPW 800

HPW 1000

HPW 1200

HPW 1600

rev 1.4

07/19

HIGH PRESSURE WATER PUMPS

USER MANUAL

Download PDF version from www.Dynaset.com/manuals Keycode: DM4YRG

Table of Contents

Questions and Answers

S
Sara AnthonyAug 16, 2025
How to troubleshoot a Dynaset Water Pump that does not work?
- D
  David UnderwoodAug 16, 2025
  If the Dynaset Water Pump is not working, first ensure that the hydraulic flow is sufficient. If it is not sufficient, enable or adjust the hydraulic flow. Also, check that the hydraulic pressure is adequate and adjust if necessary. Verify that the hydraulic hoses are correctly connected, with the pressure hose connected to the P-port and the return hose to the T-port. Finally, inspect the hydraulic piston for mechanical damage and replace any damaged parts.
S
Shawna RiveraAug 19, 2025
Why is the water flow rate too small on my Dynaset HPW 90 Water Pump?
- T
  Todd UnderwoodSep 12, 2025
  If the Dynaset Water Pump's water flow rate is too small, you should first adjust the hydraulic flow to the required level at the necessary pressure. Then, verify the nozzle sizing of your pressure tool and replace it if it is undersized. Finally, check the delivery hose sizing and replace it if there's pressure loss.
J
Jennifer EspinozaAug 22, 2025
What to do if my Dynaset HPW 90 has intense pulsating water pressure?
- A
  adam53Aug 22, 2025
  If the Dynaset Water Pump experiences intense pulsating of water pressure, check the water valves for any blockages or damage and clean or repair them as needed. Inspect the water intake line for any breathing issues and fix them. Ensure that the water intake line's diameter is not too small, and replace it with a proper one if necessary. Adjust the hydraulic flow to the demanded level to prevent excessive hydraulic flow. Clean the filter or replace it with a correctly sized one if it is clogged or too small.
J
Jose LittleAug 25, 2025
Why is the water pressure too low on my Dynaset Water Pump?
- S
  Scott WalkerAug 26, 2025
  If the Dynaset Water Pump's water pressure is too low, adjust the hydraulic pressure to the required level while maintaining the necessary hydraulic oil flow. Minimize pressure loss by avoiding hoses with too small a diameter or excessive length. Verify the nozzle sizing of the pressure tool and replace it if it is oversized. Replace the nozzle if it is worn out. Ensure there is sufficient water supply. Check and readjust the water pressure unloader valve to the correct specification, if your model has one.
M
michellewalkerAug 28, 2025
What to do if Dynaset Water Pump works but doesn't deliver water flow?
- J
  James CooperAug 28, 2025
  If the Dynaset Water Pump works but does not deliver water flow, check the water valves for any blockages or damage, and clean or replace them as necessary. For models with a water pressure unloader valve, inspect the regulator’s unloader valve and repair any failures.
F
fernandezrachelAug 31, 2025
Why doesn't my Dynaset HPW 90 receive pumping fluid?
- J
  James PonceAug 31, 2025
  If the Dynaset Water Pump does not receive pumping fluid, check and fix any issues with the intake hose and connectors. Clean the strainer or water filter thoroughly if the water supply line is clogged. If possible, check the performance with a pressurized water supply if the suction head is too high.
S
samanthareynoldsSep 3, 2025
How to unblock a water pressure line in Dynaset HPW 90?
- J
  Jimmy ShafferSep 3, 2025
  If the water pressure line is blocked in your Dynaset Water Pump, start by checking the nozzle and cleaning it thoroughly. If your model has a water pressure unloader valve, inspect the regulator’s check valve for damage and repair any failures.
C
Charles WalkerSep 6, 2025
What to do if closing the water pressure line on my Dynaset HPW 90 Water Pump doesn't drop pressure?
- D
  Denise SullivanSep 6, 2025
  If closing the water pressure line does not drop pressure to free circulation mode on your Dynaset Water Pump, adjust the hydraulic pressure as much as necessary to enable proper operation of the water pressure unloader valve, but do not exceed the maximum hydraulic pressure. If boosting the hydraulic pressure is not possible, lower the water unloader pressure setting. If your model has a water pressure unloader valve, repair or replace it if it is defective.
L
Lauren RobinsonSep 9, 2025
Why do the sealings and water pistons wear off repeatedly on my Dynaset HPW 90?
- J
  jennifer34Sep 9, 2025
  If sealings and water pistons wear off repeatedly on your Dynaset Water Pump, check and replace the filter if it is broken. If there is no filter installed, install one. Always use a filter, even with clear tap water.
G
Gabriella SanchezSep 12, 2025
What causes leakages in Dynaset HPW 90 and how to fix it?
- S
  Samuel MartinSep 12, 2025
  If you observe leakages from your Dynaset Water Pump, check the tightness of component mating and tighten screws if there are hydraulic oil leakages or pumping fluid leakages. If the draining from leakage detectors exceeds a rate of 10 drops per minute, the pump’s sealings should be replaced. The rule applies to dropping of hydraulic fluid, pumping fluid, and their commixture.

Dynaset HPW 90 Specifications

General

Brand	Dynaset
Model	HPW 90
Category	Water Pump
Language	English

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