Flowserve ZK210 - Manual (Page 15)

15
Operating Procedure
(continued)
Maintenance
(continued)
The following maintenance work must be performed:
Type of
maintenance Time interval Activities
Inspection Quarter-yearly Checking the stuffing box for leaks 1 ) (visual inspection)
Inspection Quarter-yearly Checking that connections, body seal, valve spindle and
threaded spindle are free of wear, are clean, and are not
leaking (visual inspection)
Inspection Quarter-yearly Checking of seat tightness
Inspection Annually Checking that the fastening screws of the valve actuator are
seated securely, and tightening them if necessary
Lubrication Quarter-yearly Lubricating the spindle bearing with lithium-saponified
grease with penetration grade 2 with MoS
2
additive 2 )
Inspection Every three
years Checking by Gestra specialists to ensure that the internal
parts and threaded spindle are not damaged
1 ) Replenishment or exchange of the stuffing box rings may only be performed when there is
no pressure in the valve. In particular, the safety information and danger notes in the
section entitled "Important Notes" must be observed.
Important
The task of opening the body may only be performed by specialists from
Gestra.
2 ) Lubricants recommended by the manufacturer are:
„ Shell Retinax AM with MoS
2
„ DEA Glissando MEP2