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The following instructions generally presume a standard
system using pressure supply tanks for the paint compo-
nents and solvent, and air spray guns. See also "Option-
al System Arrangements" on page 8 for possible varia-
tions and their effect on the instructions.
Flushing the Mixing System
Flush the mixing system with solvent and air at the end of
each production day (or before any break which is longer
than the potlife of the fluid). Use the following flushing
procedure:
WARNING
For your safety, read the warning section Flushing
Safety on page 2 before flushing, and follow all the
recommendations given there. ALWAYS wear pro-
tective eyewear when flushing.
1. Turn OFF the ON/OFF switch on the control panel.
2. Open the fluid pressure regulator.
3. During the following procedure (steps 4 – 7), follow
the instructions given in your separate gun manual
for safely grounding your gun while flushing.
4. Pull the trigger to hold the spray gun open. If the gun
is air-operated, open it manually.
NOTE: Solvent flushes the right-hand (catalyst) side of
the mixing block, and the inner tube of the inte-
grator. Air flushes the left-hand (base) side of
the mixing block, and the outer tube of the inte-
grator. Depending on the components being
used, you may want to flush with solvent, air, or
both – modify the following procedure accord-
ingly.
5. Press and hold the SOLVENT pushbutton (Fig. 7).
For best results, use 60 to 100 psi (4.2–7 bar) of pres-
sure.
This opens the solvent flush valve on the back side of
the mixing block, and solvent will flow from the supply
tank into the mixing system and to the gun.
6. As soon as solvent flows from the gun, stop pressing
the SOLVENT pushbutton. Press and hold the AIR
pushbutton instead.
This actuates the air flush valve on the back side of
the mixing block, and air pressure will blow the sol-
vent out of the system.
7. To thoroughly flush the system, alternately repeat
steps 5 and 6 with short bursts of solvent and air until
all solvent flowing from the spray gun is clear.
8. Adjust the fluid pressure regulator back to the normal
working pressure.
Filling the Fluid Tanks
1. Make sure the supply tanks are not pressurized.
2. Remove the lids and fill the tanks with the appropriate
paint component or solvent, allowing at least 4 in.
(100 mm) head space below the lid.
CAUTION
Don't allow dirt or foreign particles to enter the tank.
OPERATION
3. Close the tank lids.
4. Turn on the air supply and recharge the tanks with air.
Adjust their air pressure to:
Components A & B – 30 to 70 psi (2 to 5 bar). Pres-
sure to the two tanks should be equal unless one
component is more viscous (in which case the more
viscous component should have a higher pressure
setting).
Solvent – 70 psi (5 bar).
Starting Production
NOTE: When you first start up the system after it has
been shut down (overnight, weekends, etc.), it
will cycle rapidly until system pressure is built
back up. This is normal, and no cause for alarm.
1. Be sure the paint supply tanks are filled properly.
2. Be sure the solvent tank is filled properly. Make cer-
tain the fluid valves are turned on and there is ade-
quate fluid pressure supplied to the PrecisionMix. Be
sure the fluid shutoff knobs, dispense valve knobs,
and flush valve knobs are all opened (see Fig. 7).
3. Determine the correct metering ratio, then check or
reset the SETPOINT and TOLERANCE selectors.
See "Checking or Adjusting the Metering Ratio"
(page 12) and "Adjusting the Overrun" (page 13).
4. If necessary, adjust the underrun timers on the rear
of the control box.
5. Turn ON the ON/OFF switch on the control panel.
The top three fuse indicators and the digital displays
will light. Make certain all voltage indicator lights are
lit (see Fig. 6).
6. Remove any air from the fluid lines of the system:
a. Shut off the air to the gun by closing the air regula-
tor on the PrecisionMix.
b. Hold a metal part of the spray gun firmly to the
side of a grounded metal pail and pull the trigger.
c. Press the START button.
d. If the volume counters overrun because of air in
the system, operation will stop. Just repeatedly
press STOP and then START again until paint
flows air-free from the spray gun.
7. If the paint output is too low, increase the air pressure
on both supply tanks; if too high, reduce the air pres-
sure, close the dispense valves further, or adjust the
fluid pressure regulator.
Do not use the first 4 to 5 oz of paint from the sys-
tem, as it may not be thoroughly mixed.
8. Check the air pressure regulators on the supply
tanks, to be sure that the feed pressures are approxi-
mately the same.
9. Check or reset the air regulator in the spray air line.
10. Check or reset the (optional) fluid pressure regulator
on the static mixer outlet. Use the adjustment key to
adjust the regulator.
11. Begin production by pressing START, or (if so
equipped) with an external start signal.
CAUTION
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