No pressure or low water pressure can be the result of a restriction on the pumping system that could cause pump cavitation. Pump cavitation can prematurely wear components on a pressure washer. Too much pressure can result in damaging components caused by improper adjustments. This can also damage the machine or cause injury to the operator.
Low water volume can indicate a problem with the pumping system. This can be caused by a faulty component or a plumbing issue.
The orifice size of a nozzle creates the water pressure intensity. When the nozzle orifice starts to wear, it reduces the cleaning units by lowering the pounds per square inch (PSI) of your pressure washer.
Belt tension is required to maintain adequate pressure and volume of the pumping system. When belts are worn, cracked or loosen it can cause premature wear and performance complications
Pump oil lubricates the pump and prevents premature failure of the pump components. Low oil can cause overheating and failure of the pumping system. HPS advises that you change the pump oil after the first 50 hours of use and every 250 hours after the first oil change.
Engine oil lubricates the engine components. Low oil levels could cause the oil to overheat, break down, or seize the engine. HPS advises that you change the engine oil after the first 50 hours of use and every 250-350 hours after the first oil change.
- Check hoses for signs of wear
High pressure hoses can overtime become damaged and worn. Check hoses and crimps for signs or wear. Our hoses contain a metal braid and can be seen when the hose starts to wear through. This is an indication that a new hose is required to prevent further damage or injury to the operator.
- Check trigger guns & wands
Trigger guns and wands should be inspected regularly to provide optimal performance and a safe environment for the opterater.
Quick connects provide easy access to remove and connect nozzles, hoses and guns. Quick Couplers are wear items and should be inspected regularly to prevent leaks or damage to the machine.
- Check injectors & soap metering valve
Soap metering valves and injectors provide the proper dilution ratio for a enhanced cleaning performance. Ensure that soap valves are closed when not in use to prevent air from getting into the pumping system.
Heater coils overtime can create mineral deposits causing scale build up in the coil. This can damage the pump and its components. Cooling the coil down is a great way to prolong the longevity of the coil and minimize scale build up.
A burners exhaust can create soot deposits on the outside of the heating coil from fuel, air or gas pressure changes. Soot is a sign of a combustion problem and can result in a dirty exhaust. It is best to address this problem sooner than later as it can cause future repairs.
- Check unloader adjustment
NEVER, tamper with the unloader. The unloader valve is set to factory standards to limit the pressure when the trigger gun is engaged and disengaged. Adjusting the unloader can damage components and create thermal shock in the system by having too high of a spike pressure.
- Check electrical connections
A loose wire or connection can create a voltage drop in the electrical system. This can create an increase in the amperage draw causing a switch, motor, transformer, relay or other components to overheat and fail.
Thermostats turns the burner ON and Off, which then allows the operator to set the correct temperature for their cleaning application. A malfunctioning thermostat can result in overheating and damage to the system.
Loose wires and connections can affect performance and operation.
- Check oil or gas burner for wear or corrosion
This ensures the burner is performing up to factory specifications.
- Check for contaminated or stale fuel
When fuel sits for long periods of time it can become stale as well as create condensation in the fuel tank. Water and other contaminants can cause damage to the fuel components and affect the overall performance.
Fuel filters filter out debris, contaminants and water after the fuel tank. Cleaning and changing the fuel filter can prevent future damage. HPS recommends fuel filters be changed in the first 50 hrs and everything 350 hours after the first change.
- Check fuel or gas pressure
If the fuel pressure changes, the amount of fuel supplied to the combustion chamber will also change causing the burner to burn incorrectly. The fuel or gas pressure affects the air and fuel mixture of the burner resulting in an inconsistent burn. This can cause soot to build up and damage other components.
The air and fuel mixture should be checked regularly for optimal performance.
A dirty air filter may reduce the engine performance and the performance of the pressure washer. Clean or replace the air filter as necessary.
Spark plugs should be inspected and replaced when worn.
The engines fuel filter should be inspected for debris or contaminants and replaced when needed.