Burkert Type 8644 - Manual (Page 61)

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Maintenance,Troubleshooting
9. mainTenance, TrOuBleshOOTing
9.1. safety instructions
DANgEr!
risk of injury from high pressure in the equipment!
• Before dismounting pneumatic lines and valves, turn off the pressure and vent the lines.
risk of injury due to electrical shock!
• Before reaching into the device or the equipment, switch off the power supply and secure to prevent
reactivation!
• Observe applicable accident prevention and safety regulations for electrical equipment!
WArNINg!
risk of injury from improper maintenance!
• Maintenance may be carried out by authorized technicians only and with the appropriate tools!
risk of injury from unintentional activation of the system and an uncontrolled restart!
• Secure system from unintentional activation.
• Following maintenance, ensure a controlled restart.
9.2. Troubleshooting
malfunction possible cause remedial action
Valves do not switch No or inadequate operating voltage Check the electrical connection
Ensure the operating voltage according to type
plate.
Manual actuation not in neutral
position Move manual actuation to zero position
Inadequate or no pressure supply Design the pressure supply with the largest
possible volume (even for upstream devices
such as pressure controllers, maintenance units,
shut-off valves, etc.)
minimum operating pressure ≥ 2.5 bar
english
Type 8644