SB-E-2-252-B – © ITW LTD 1994
5
CLEANING GUN USED WITH SYPHON CUP OR MATERIAL SUPPLY HOSE
CUP -
Unscrew the cup empty and rinse out carefully with thinners, place clean thinners in the cup and spray this through the
gun until it is clean, then blow air through the gun to dry it.
MODE -
Disconnect supply hose at Fluid Inlet, reconnect a supply of clean solvent. Spray through the gun until clean, then
disconnect solvent and replace with an air supply and blow through until dry.
EVERY DAY AFTER CLEANING PLACE A DROP OF OIL IN THE FOLLOWING:
1) Trigger stud.
2) Material needle valve at material packing screw.
3) Air valve stem at gun body.
4) Material needle valve guide at gun body.
NEVER IMMERSE GUN IN SOLVENTS. DO NOT USE SILICONE OILS OR GREASES.
FAULTY SPRAY
This can be caused by improper cleaning, dried material around the material nozzle tip or in the air nozzle. Soak these parts in
thinners that will soften the dried material and remove with a brush or cloth.
NEVER USE METAL INSTRUMENTS TO CLEAN THE AIR OR MATERIAL NOZZLES. THESE PARTS ARE CAREFULLY
MACHINED AND ANY DAMAGE TO THEM WILL CAUSE A FAULTY SPRAY.
If either the Air Nozzle (36) or Material Nozzle (37) are damaged, these parts must be replaced before a perfect spray can be
obtained.
INTERMITTENT SPRAY.
If the spray flutters, it is caused by one of the following faults: -
1) Insufficient material available. Check supply and replenish if necessary.
2) Loose Material Nozzle (37 ) Tighten but without using undue force.
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3) Leakage at Material Needle Valve Packing (30) Tighten or replace Material Needle Valve Packing.
4) Cup connection insufficiently tight, or dirt on cone faces. Correct as necessary.
5) Air vent in cup lid blocked . Remove lid and clear obstruction. Replace lid.
AIR LEAK AT AIR VALVE SPINDLE.
This could be caused by a worn Valve Spindle (20) or Spindle Seals (4) . Remove knob (13) Spring (2) and withdraw needle
assembly (38). Unscrew Valve housing (17) and all valve components can be removed , seals (4), Springs (2) & (3), Seal
housings (31) & (29) and Valve Spindle (20). Replace seals (4) and valve spindle (20) prior to re-assembly which is a reverse of
the above procedure.
Note: ensure Springs (2) and (3) and seal housings (31) and (29) are assembled in the correct order.
AIR LEAKING THROUGH THE GUN
This could be caused by dirt on the Air Valve seat or a damaged air valve which is part of the Spindle (20). Replace the Spindle
(20) and at the same time Spindle Seals (4) as described above in “Air leak at Air Valve Spindle”.
PAINT LEAKING AT NEEDLE GLAND SEAL
Tighten Material Packing Screw (15), do not overtighten as this may cause the needle to stick. To replace Seal unscrew
Material Needle Control knob (13) , remove Material Spring (2) and Material Needle (38). Unscrew Material Packing Screw
(15) and take out old packing.(30)x 2) Refit with Packing (30)x 2) then replace Material Packing Screw, Needle, Spring and
knob then adjust Packing Screw to seal correctly.
MAINTENANCE & FAULT FINDING
Содержание SB-E-A1-21-1
Страница 7: ...SB E 2 252 B ITW LTD 1994 7 NOTES...
