CJ-200E
6
Model CJ-200E Operating and Maintenance Manual
Pre-Operation Checklist
• Check for adequate water and chemical cleaner supply (use only mild cleaners).
• Check spray nozzles and make sure orifice is not blocked or worn to excess.
• Check pressure hose for wear or kinks.
• Check all connections, fittings, screws and fasteners.
Normal Coil Cleaning Operation
1. The COILJET
®
is a very versatile machine and has two operational modes. It is equipped
with an Auto-Shut-Off function. When the trigger is released the pump turns off and comes
on when the trigger is pulled. Please remember to turn main switch off when done.
2. Fill the water and chemical tanks. Before priming the pump, make sure chemical valve is
fully closed.
3. The COILJET
®
is equipped with a two position water valve. Set the chemical valve to the
“Off” position and set the water valve to “Tank” for on-board water or “Garden Hose”, as
appropriate.
4. Plug the 3-prong male GFCI plug into a normal AC power outlet (110-volt, 60 hertz) and
depress the GFCI reset button. The COILJET
®
will be ready to operate when you flip the
power switch to the “On” position.
5. For best results and maximum self-contained operation time, it is advisable to fully prime the
pump before normal operation. Remove any nozzle that may be attached to the spray gun.
Squeeze the spray gun trigger to prime the pump until steady flow of water appears.
6. NOTE: If you are having trouble priming the pump, make sure the water tank is fully filled
or garden hose is attached to it, place the unit on a table or support, hold the spray gun
below the level of the pump and squeeze the trigger until a steady flow of water appears.
7. When switching between “Garden Hose” and “Tank”, it is best to re-prime the pump.
8. Fully open the chemical valve (counter-clockwise). Squeeze the spray gun trigger
repeatedly until chemical is primed.
9. The COILJET
®
comes with 2 quick-connect nozzle attachments:
• Yellow Rinsing Nozzle – a 15° fan-spray high-flow rinsing nozzle.
• Green Soap Nozzle – a 25° nozzle to apply soap to coils.
10. Attach nozzle to spray gun.
11. Apply water/chemical solution evenly to coils.
12. Close the chemical valve finger tight (clockwise). Do NOT overtighten.
13. If possible, let foaming coil cleaner solution sit for the recommended dwell time (according
to chemical instructions) to penetrate into coils.
14. Rinse coils with clean water.
15. *NOTE: There may be a ten second delay for the chemical to be removed from the hose.
16. When done using the COILJET
®
, make sure the power switch is in the “Off” position. This is to
prevent accidental discharge from the spray gun.
17. After shutting off the power, always relieve the pressure by pointing the spray gun lance in
a safe direction and squeezing the spray gun trigger.
18. Adjust chemical valve to desired dilution ratio (see table below).
Operating Instructions
Chemical Dilution Ratios
Turn Chemical Valve counter-clockwise to open, clockwise to close.
1
Turn
Open = 30:1
2
Turns Open = 20:1
2.5 Turns Open = 10:1
Water Sources
The CJ-200E give you the option to use either on-board water supply or garden hose supply.
To use the on-board water supply, turn the knob to the “Tank” position as shown. Fill the tank
with water, then prime the unit and then equip the nozzle necessary for cleaning. (Please see
Normal Coil Cleaning Operations for priming instructions).
3 Turn Open = 6:1
Full
Open = 4:1
