Duro Dyne 40112, Руководство пользователя

Страница: 20 / 24

- 20 -
D W E L L C Y L I N D E R P R O B L E M S
SYMPTOM CORRECT
FUNCTION
INDICATOR
POSSIBLE
PROBLEM
ACTION
Dwell cylinder does
not retract and
weld stays on.
Initiate, Weld
timer, Feed
reed switch,
Dwell solenoid
and Weld signal
indicators
are all on
Constantly.
All lights flash in
sequence
Weld timer. Remove the push-on connector from terminal #4 of the Weld timer. If Dwell
cylinder retracts and weld turns off replace Weld timer.
Dwell cylinder does
not retract and
weld stays on.
Initiate, Dwell
solenoid and
Weld signal
indicators
are all on
constantly.
All lights flash in
sequence
Short cycle
relay.
Test for voltage (24VAC+/-) at terminals #17 and #19. If the voltage is
present return to the step up above. If the voltage is not present,
now check the voltage (24VAC+/-) at the terminals #9 to #24, #18
to #22 and #17 to #22. If the voltage is present all the time on these
terminals replace the Short cycle relay.
Dwell cylinder does
not retract.
Dwell solenoid
and Dwell delay
indicators are
on constantly.
Dwell solenoid
indicator goes
on and off with
every cycle.
Stays on 150ms
longer than feed
reed indicator.
Dwell Delay
timer.
Remove the push-on connector from terminal #4 of the Dwell Delay timer.
If Dwell cylinder retracts replace the Dwell Delay timer.
Dwell cylinder does
not retract.
All indicators are
functioning
correctly
All lights flash in
sequence
(A) Dwell
solenoid.
(A) Turn the power off. (If the Dwell cylinder shaft retracts recheck symp-
tom). Now try and lift the cylinder shaft up. If the cylinder shaft cannot
be lifted replace the Dwell solenoid.
(B) Dwell
cylinder.
(B) If the cylinder shaft can be lifted easily check the Dwell cylinder and
air lines for air leaks. Turn the air off and then move the cylinder shaft
up and down. If the cylinder shaft moves up and down without any air
resistance the seals in the cylinder are most likely bad. Replace the
Dwell cylinder. If a slight air resistance is present on the up and down
motion replace the Dwell solenoid.
Sluggish movement
of the Welding tip.
All indicators are
functioning
correctly
All lights flash in
sequence
(A) Main air
regulator.
A) Adjust main air regulator (80psi).
(B) Air lines
and
Adjustable
mufflers.
(B) Check air lines for leaks or water in the air lines. If there is water in
the air lines, disconnect and blow out air lines. Remove and clean out
adjustable mufflers. Reconnect air lines and adjustable mufflers.
(C) Dwell
cylinder.
(C) Turn the power and air off. Check the Dwell Cylinder shaft for binding by
moving shaft in and out of the cylinder. A slight air resistance should be
present when the shaft is being moved in and out of the Cylinder.
(D) Dwell
solenoid
(D) If the above procedures check out and the Dwell cylinder still has
sluggish movement the problem maybe the Dwell solenoid. Remove the
air line from air inlet of the solenoid and spray a light oil in the solenoid.
Reconnect air line and cycle machine. If Dwell cylinder still has sluggish
movement replace the Dwell solenoid.