Ridgid KJ-3100 Owners Manual - Page 15

KJ-2200/KJ-3100 Water Jetting Machines Watch the drain water level. If the water level gets too high, you may need to turn the jetter OFF and allow the water to drain prior to continuing. Jetting when the line is full of water is less effective than when the line is empty. Do not allow the jetter to run for extended period of time with the foot valve OFF. When the foot valve is OFF, water recirculates in the pump and cause the water to heat up. This can cause the pump thermal overload to open. Once the nozzle is the desired distance into the drain, slowly (1 ft /minute for heavy drain accumulations) pull the nozzle back through the drain. Use one hand to control the hose and the other to wind the hose onto the reel. Watch as the nozzle gets closer to the drain opening that the nozzle does not come out of the drain while water is flowing. This could allow the hose to whip around and cause striking and high pressure fluid injuries. Always control the hose. Look for the mark on the hose near the nozzle. Release the foot valve to shut off the water flow. Turn OFF the engine as directed in the engine manual, and depress the foot valve to release the system pressure. Never leave the system pressurized. If needed, change the nozzle and continue cleaning following the above process. Several passes through a line are recommended for complete cleaning. When finished, with the jetter shut off, remove the nozzle and open inlet supply valve to flush out the pump and hose. If using the jetter in cold weather conditions, immediately drain the water from the system to help prevent damage from freezing. See Machine Storage for information on freeze protecting. Using the Pulse Mode When manipulating the hose is not enough to pass through a direction change or obstruction, the pulse mode should be used. The pulse mode induces large variation in water pressure that causes the hose to vibrate, easing hose advancement. 1. Turn the pulse actuator lever clockwise to the "Pulse" position. In pulse mode, the pressure gauge will read less than full pressure. This is normal. PRESSURE PULSE Figure 16 - Pulse Actuator Lever Position 2. If needed, use sharp thrusts of the hose and hose rotation to help the nozzle through the obstruction. 3. Once through the obstruction, turn the pulse actuator lever counter-clockwise to the "Pressure" position. Do not leave the jetter in pulse mode any longer than needed to pass through an obstruction. Excessive use of the pulse feature can cause premature wear on hoses and system. Using Water Jetter Machine as a Pressure Washer The RIDGID water jetting machines can also be used as pressure washers with the addition of the pressure wash package. Use as a pressure washer is similar to use as a jetter, and those instructions should be used in conjunction with the following. 1. Locate an appropriate work area. 2. Make sure all equipment has been properly inspected. 3. Attach the wash wand to the wash wand hose. Always use hose with a pressure rating at least as high as the jetter pressure rating. Use a thread sealant to prevent leaks. 4. Attach hose to the jetter outlet. Make sure the ends of the hose are securely connected to prevent them from coming off under pressure. 5. Connect an appropriate water supply, as discussed earlier, to the jetter. 6. Open the inlet supply valve and squeeze the wash wand trigger to allow water to flow and purge any air from the system. Never start the engine without the water supply turned ON. This can damage the pump. 13