Flowserve 191700 Series - Manual (Page 7)

7
Figure 2
9 COMMISSIONING
CAUTION: Ensure that no foreign particles are present
in the line system
9.1 Idle test
Operate valve once by actuating with compressed air,
while checking mechanical function of valve.
• TC clamp (3) seated tightly
• Check air pressure and air connections for leakage
• Check stroke path; valve spindle (4) should open
and close without jerking
Check function of the actuator based on documenta-
tion for actuator.
Clean system before operating with product for the
first time.
9.2 Test Run under Operating Conditions
Check sealing elements for leakage.
Replace defective seals as described in installation
and removal instructions.
Check mechanical functions (see idle test).
Check function of control drive (see idle test).
9.3 Initial Operation
Check valve function analog to test criteria for test
run.
9.4 Malfunctions
Eliminate any malfunctions, which occur immediately
according to installation and removal instructions.
9.5 Malfunctions
Eliminate any malfunctions, which occur immediately
according to installation and removal instructions.
10 MAINTENANCE
Before maintenance
CAUTION:
Valves with air-to-open actuators: tension the ac-
tuator springs using top handwheel or by applying
supply air under the membrane.
Failure to do this will cause the valve bonnet to
spring-out when the clamp is released due to the
spring pressure acting between the plug and seat.
Observe electrical connection voltage, as necessary
switch off power supply.
Have repair work performed only by trained person-
nel authorised by the operator.
Figure 2a (191700)
Stem (4)
Wiper (5)
Bonnet (2)
PTFE-Guide (8)
TC-Clamp (3)
O-Ring, Stem seal (7)
Diaphragm support ring (9)
Aseptic diaphragm (6)
Plug (10)
Valve body (1)
Figure 2b (191800)