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Page 11 HRO-ST3131 Mar 8, 2004
FLUSHING PROCEDURE
Follow the pressures relief procedure on page 3.
1. Remove and clean gun filter.
2. Unscrew filter housing retainer (ref# 1) (should be hand tight)
and remove and clean filter (ref# 5) thoroughly.
3. Re-install the filter housing and retainer. Flush sprayer without
filter screen installed.
4. Close prime valve.
5. Pour a gallon of the correct thinner into a clean 5 gallon pail.
6. Insert the intake tube into the pail.
7. Turn regulator control knob all the way counter-clockwise.
8. Point prime valve bleed tube into 5 gallon pail. Turn the pump
ball valve on and slowly increase the pressure until sprayer
starts. Open prime valve. Allow thinner to circulate
back into the pail for a short period to flush the prime valve.
9. Close the prime valve.
10. While firmly holding a metal part of the gun against a metal
waste container, trigger the gun into a separate waste container.
Keep the gun triggered until clean solvent is sprayed from the
gun. Release the trigger and engage the safety lock.
11. Remove the intake tube from the pail. Trigger the gun once
again to discharge thinner from the hose. Do not let the pump
run dry for more than a couple of minutes or damage to the
pump packing could result.
12. Unscrew filter housing retainer and re-install the filter screen.
13. Repeat steps 3-9 with clean solvent.
14. Turn the ball valve off, and open the prime valve.
NOTE:
Filter housing retainer (ref# 1) only has to be hand tight.
NOTE:
NEVER LEAVE THE UNIT UNDER PRESSURE
WHEN NOT SPRAYING ( MOTOR TURNED OFF ).
RELIEVE PRESSURE BY TRIGGERING GUN.
NOTE: TO PREVENT CORROSION AND TO REDUCE
THE RISK OF FLUID FREEZING IN THE PUMP.
NEVER STORE THE UNIT WITH PAINT OR
WATER IN THE PUMP SYSTEM, EVEN
OVERNIGHT!
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