Series 121
MAINTENANCE
600968EA
Edition 2015-11-16
15/27
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
Heavy weight
Physical overstraining.
Use a crane to lift the valve insert.
WARNING
Hazardous components
Human body parts may get jammed and severely injured.
Before starting maintenance:
– disconnect compressed air supply
– disconnect electrical power supply
WARNING
Movable parts
Human body parts may get jammed and severely injured.
Keep human body parts away from movable parts.
WARNING
Hot surfaces
Risk of burning when touching hot surfaces.
Touch hot surfaces only if the valve has cooled down.
6.1
Maintenance intervals
Under clean operating conditions the valve does not require any maintenance during the
specified cycles; see product data sheet. After these cycles, VAT recommends replacing
the mechanism unit; see chapter «6.4 Replacement of gate seal and bonnet seal».
For more information or a general overhaul please contact one of our service centers. You
will find the addresses on our website www.vatvalve.com.
