16
OPERATION
HeavyCoat
4.4
PREPARING TO PAINT
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Before painting, it is important to make sure that
the fluid in the system is compatible with the
paint that is going to be used.
Incompatible fluids and paint may cause the
valves to become stuck closed, which would
require disassembly and cleaning of the sprayer’s
fluid section.
Attention
Always keep the trigger lock on the spray gun in
the locked position while preparing the system.
Refer to the spray gun instruction manual for
trigger lock instructions.
1.
Place the siphon tube into a container of mineral spirits.
2.
Place the bleed hose into a metal waste container.
3.
Turn the pressure control knob fully counterclockwise to
its lowest pressure setting (Fig. 10, item 1).
4.
Open the bleed valve (2) by turning it fully counterclockwise.
1
3
2
5.
Start the engine or turn on the electric motor:
a. To start the gas engine, follow the steps in section 4.2
b. To start the electric motor, push and hold the ON/OFF
switch (3) in the ON position until the electric motor is at
full speed, then release the switch.
6.
Turn the pressure control knob (Fig. 10, item 1) clockwise
approximately 1/3 of the way to increase pressure until
the sprayer cycles evenly and solvent flows freely from the
bleed hose.
7.
Allow the sprayer to run for 15–30 seconds to flush the
test fluid out through the bleed hose and into the waste
container.
8.
Turn off the sprayer.
a. To turn off the gas engine,
• set the pressure to minimum by turning the pressure
control knob fully counterclockwise,
• move the throttle lever to the slow position, and
• turn the engine switch to the OFF position.
b. To turn off the electric motor,
• set the pressure to minimum by turning the pressure
control knob fully counterclockwise,
• move the ON/OFF switch to the OFF position.
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Make sure that the spray gun does not have a tip
or tip guard installed.
9.
Close the bleed valve by turning it fully clockwise.
10.
Start the engine or turn on the electric motor.
11.
Turn the pressure control knob clockwise approximately
1/3 of the way down to increase pressure.
12.
Unlock the gun by turning the gun trigger lock to the
unlocked position.
Ground/Earth the gun by holding it against
the edge of the metal container while flushing.
Failure to do so may lead to a static electric
discharge, which may cause a fire.
13.
Trigger the gun into the metal waste container until the
old solvent is gone and fresh solvent is coming out of the
gun.
14.
Lock the gun by turning the gun trigger lock to the locked
position (refer to spray gun manual).
15.
Set down the gun and increase the pressure by turning
the pressure control knob slowly clockwise to its highest
setting.
16.
Check the entire system for leaks. If leaks occur, turn the
sprayer off and follow the “Pressure Relief Procedure” in
this manual before tightening any fittings or hoses.
17.
Follow the “Pressure Relief Procedure” (section 4.6) in this
manual before changing from solvent to paint.
Be sure to follow the Pressure Relief Procedure
when shutting the unit down for any purpose,
including servicing or adjusting any part of the
spray system, changing or cleaning spray nozzles,
or preparing for cleanup.
