Winterizing Procedures for Pressure Washers
If temperatures drop near or below freezing point, take necessary precautions to protect your investment.
Hot Water Units
Proceed as follows:
- Turn machine switch to STOP position.
- Turn off water supply. Detach and drain water supply hose.
- Detach and gravity rain high-pressure hose and trigger gun.
- Have approximately 1 Gallon of a 50/50 auto antifreeze solution ready.
(DO NOT USE RV antifreeze).
- Turn machine switch to MOTOR ON and pour antifreeze solution into float tank.
- Immerse detergent suction hose in a separate container filled with antifreeze solution. Set detergent valve to high position if unit has a control setting. This will only protect the detergent line freezing, not the entire pump.
- Allow antifreeze solution to emerge at machine outlet. Protection is now complete.
- Turn machine switch to STOP position.
Cold Water Units (gas or electric)
Follow steps 1 thru 4 above.
- Turn machine switch to MOTOR ON and draw antifreeze solution from container with the water supply hose. Using detergent inlet suction line to draw in antifreeze solution WILL NOT protect pump from freezing. You must use garden hose / water supply inlet to ensure solution fully protects pump.
Follow Steps 6 through 8 as above.
***NOTE: The best antifreeze protection is provided by using and storing the machine in a sheltered warm space.