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T
HE ARM IS
NOT
WORKING
PROPERLY
UCR-150L Robot UGR003/0900
6-6
TROUBLESHOOTING
The problems you will see with the arm is that it will not
extend or retract properly. Check electrical wiring, switches,
valves, and air lines.
Symptom
◆There is no arm
extension (no arm
down).
◆ There is no arm
retraction (no arm
up).
Possible cause
There is no air pressure.
The mold is not fully
open.
The robot is not swung
fully in or fully out.
Vertical stroke adjust-
ment block is set too low.
The arm down flow con-
trol is shut off.
The main arm solenoid
valve is not functioning.
The air lines/seals are
damaged or leaking.
There is no air pressure.
The up solenoid is not
functioning.
Solution
Check air supply to the robot.
Check for leaks.
Check that the interface wiring
is correct.
Check the LS-1 and LS-2
switches and adjust as neces-
sary.
Loosen stroke adjustment
block and set higher to correct
stroke.
Adjust the down speed control;
replace as needed.
Replace the main arm solenoid
valve.
Check air lines and seals;
replace as needed.
Check air supply to the robot.
Replace the up solenoid valve.