March 23rd, 2011 
vdate 
Introduction To Electricity
Many system controls are for incorporate electrical switches. To fully understand their action, you need to understand how electricity works and how to test circuits. It does not take a genius to understand how electricity works. The first step is understanding how electricity is measured. (more…)
Posted in Articles 
Tags: Chemical, Guns, pressure-washers, Pumps, Surface Cleaners, Unloader 
No Comments » February 2nd, 2011 vdate 
Servicing Ceramic Plunger Pumps
The most popular type of ceramic plunger pump today has a one-piece, forged manifold with caps or covers placed for easy check valve access. These pumps often have unitized, easily replaceable valve assemblies as well. However, removing some wearable parts may require a slide hammer or other special tools. (more…)
December 23rd, 2010 vdate Simple Testing Procedures
Simple testing procedures can determine if a burner is adjusted for maximum efficiency. For most oil burners this efficiency is between 65 and 95 percent and can be affected by heat exchanger or coil design as well as by adjustments to the burner. If an oil burner were operating in absolutely ideal conditions, its efficiency would be higher. (more…)
December 8th, 2010 vdate November 10th, 2010 vdate The Diagnostic Process
When equipment service problems are reported, operators generally describe the symptoms they observe. The reported symptoms are often both severe and vague. Usually, requests for service are not made until the operation of the equipment has become unacceptable: that is, the equipment does not work at all, does not produce sufficient pressure to perform the desired cleaning job, or the boiler will not work and the cleaner is discharging cold water. (more…)
October 27th, 2010 vdate 
The High Pressure Hose
High pressure or steam hose carries the water flow from the pump to the unloader valve and onward to the trigger gun or lance. Hose used to handle fluid under pressure is made up of three components: a tube to contain the fluid, reinforcement to help the tube contain high internal pressure and an outer cover to protect the reinforcement. (more…)
October 15th, 2010 vdate Check Fuel Delivery
The very first step in diagnosing fuel system problems is to verify that the fuel supply is proper an adequate. Make sure that fuel is flowing. Start the cleaner and burner. Open the fuel pump bleed valve. If the pump is creating adequate fuel flow, fuel should come out of the port about two inches in an even stream. (more…)
August 31st, 2010 vdate An Introduction To Oil Burner Components And Operation
Although there are several different types of oil burners used in high-pressure cleaners and their appearance may differ radically, each one must have the same basic components. (more…)
August 20th, 2010 vdate Introduction To Thermostat Control
The thermostat responds to water temperature to turn the burner off or on so that a predetermined temperature is maintained. Thermostats are essentially electrical switches operated by changes in temperature. Most thermostats have two major components, a switch and a sensor. Temperature changes affect the sensor which, in turn, operates the switch. (more…)
July 21st, 2010 vdate Pressure-Actuated Switching
The pressure switch responds to a rise or fall in system pressure by either breaking or completing an electrical circuit. (more…)
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