Series 620
MAINTENANCE
1003735EB.DOCX
Edition 2020-01-08
15/26
6
Maintenance
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
WARNING
Valve opening
Risk of serious injury.
Human body parts must be kept out of the valve opening and away from moving parts.
Disconnect power on controller before doing any work.
CAUTION
Hot valve
Heated valve may result in minor or moderate injury.
Do not touch valve and heating device during operation. Once heating is switched off
(valve and system) await until the valve is cooled down complete (<25°C) before doing
any work
NOTICE
Damage during heat up ramp and cool down
If valve is closed and fan not running then valve may get damaged.
Make sure that valve is in open position and fan running.
NOTICE
Contamination
Gate and other parts of the valve might have been contaminated during usage.
Always wear protective gloves when handling the valve.
NOTICE
Cleanliness
Gate and other parts of the valve must be protected from contamination during service.
Always wear clean room gloves when handling the valve.
6.1
Maintenance intervals
Under clean operating conditions, the valve does not require any maintenance during the specified
cycle life. Contamination from the process may influence the function and requires more frequent
maintenance.
