Rapid-air AIR FEED / RAPID MASTER WITH KEYPAD Manuel d'utilisateur télécharger pdf (Page 11)

11

Problem Possible Causes Remedy

characteristics and possible causes

of troubles with rapid-air feeds

Feed and stock clamps work,

but slide block does not move when

actuating valve is depressed.

Excessive leakage of air from

exhaust hole beneath speed

adjusting screw when actuating

valve is in up position.

Excessive leakage of air from exhaust

hole, also sluggish operation of feed

clamp pistons, actuating valve up.

Excessive leakage of air from

exhaust hole when actuating

valve is in down position.

(Note: that a slight amount of

leakage is normal in this position).

Stock clamp does not move up and down

when actuating valve is depressed.

Other operations appear normal.

Excessive leakage of air from

actuating valve vent hole when

actuating valve is in up position.

Gradually reduced speed.

Excessive leakage of air from pilot op-

erated valve vent hold on side of feed.

– Pilot operated valve is stuck.

– Poppet not seating on bottom of

valve hole.

– Leaking of “O” rings #85, 83, 84, 88,

90 and 100.

– Leaking of “O” rings #85 and 90.

– Tight “O” rings or grit around pilot

operated valve may prevent it from

moving its full stroke.

– Worn poppet.

– Poppet in backwards.

– Worn “O” rings #96 around O.D. of

stock clamp pistons.

– “O” rings #103 beneath actuating

valve retainer #31C is leaking.

– Lack of oil.

– Low viscosity oil.

– Speed adjusting screw turned in too far.

– Oversized poppet.

– Leaking of “O” rings #100, 101 or 102.

– Check for grit, swollen nylon or

swollen “O” rings.

– Check for grit or chips.

– Check “O” rings #85, 83, 84, 88, 90

and 100. See assembly drawing

#106 for location.

– Check “O” rings #85 and 90. See

assembly drawing #106 for location.

– Clean grit, cycle feed manually to

break in “O” rings.

– Insert new poppet.

– See feeds parts list #106 for correction

orientation.

– Replace “O” rings. See assembly

drawing #106 for location.

– Install “O” rings beneath retainer -

not in air groove. See assembly

drawing #106.

– Adjust air / oil mixture.

– Use lighter weight oil.

– Readjust screw.

– Clean poppet area; check for free ﬁt.

– Check “O” rings #100, 101 and 102.

See assembly drawing #106 for location.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 22 23

Commentaires sur ces manuels

Pas de commentaire