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Corrective maintenance
Procedure
1.
Inspect all bolts used to secure the control valve in-line to ensure that proper
mounting procedures have been followed and that flange connections are leak-free.
2.
Evaluate the system setup to ensure that all components are in the correct
operating sequence.
3.
Evaluate the system setup to ensure that all components are in the correct sequence
for accurate product measurement. Some components are isolation valves,
strainers, flow straighteners, turbine meters, downstream sections, etc.
ISOLATING UPPER CHAMBER HAZARD
The only function of the socket-head screws that secure the cylinder head to the cylinder
is to provide a mechanical joint between components during assembly or disassembly.
Do not Isolate the upper chamber (Nitrogen Reservoir) during Shell or Hydro Testing,
pressure must be applied to the inlet and upper chamber at the same time.
96
WARNING!
Daniel Models 762, 763, 765, 766 and 767 Control Valves
USER MANUAL
95
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