Searching For Causes Of Fault - TOX PRESSOTECHNIK Powerpackage Q Series Original Operating Instructions

9.2 Searching for causes of fault

Fault
Piston rod does not extend.
No execution of power stroke.
Press force not reached.
Power stroke not triggered with
very short fast approach stroke
(only for type Q-S, X-S, S, EL
with hydraulic end position
cushioning ZHD)
52
Possible cause
Tool jams.
Guiding columns are jammed.
Air pressure too low (only for assembly
direction from the bottom to the top).
Main control valve does not switch.
Unlockable check valves (optional
equipment) do not open.
Faulty pneumatic hose.
Insufficient air pressure.
Compressed air setting on pressure
regulator in the power stroke line (op-
tional) is too low.
Pneumatic spring pressure setting is
too high or the pneumatic spring is
faulty.
Oil level is too low.
Air is trapped in the hydraulic oil sys-
tem.
Power stroke valve is faulty.
Control throttle 'X' incorrectly set, over-
loaded.
No air pressure in home position.
The fast approach distance traveled is
too short. Required: min. 8 mm.
Troubleshooting
Measure
Mechanically decouple the Powerpack-
age and check ease of movement by
extending and retracting.
Check air pressure and increase if nec-
essary.
Check main control valve.
Contact authorized service personnel.
Check non-return valves.
Contact authorized service personnel.
Check the compressed air supply.
Contact authorized service personnel.
Increase air pressure.
Increase air pressure in power stroke
line.
Check compressed air supply of the
pneumatic spring.
Contact authorized service personnel.
Checking oil level, Page 60.
Refilling oil and venting drive, Page
61.
Contact authorized service personnel.
Setting control throttle 'X', Page
Impinge the return stroke with air pres-
sure before initiating the fast approach
stroke.
Set sufficient travel for fast approach
stroke before the power stroke is
switched on.
TOX_Manual_Powerpackage_line-Q_en
47.