Maintenance - Emerson Fisher OSE Instruction Manual

Type OSE
Commissioning (max. only or max. & min.)
• Inlet valve
→ Open slowly
• Slam-shut bypass
→ Open slowly (stage 2)
• Regulator
→ Put into operation (see corresponding manual)
• 1 release relay stage
st
→ Set (Stage 1)
• Slam shut valve plug
→ Open (Stage 3)
• Outlet valve
→ Open slowly
The equipment is commissioned
After checking and commissioning the release relay it is
recommended to seal it

MaiNTENaNCE

Servicing Check
recommended frequency:
• Twice yearly minimum
Verification:
• Tripping and tripping value
• Slam-shut tightness
Departure positions
→
• Inlet valve
→
• Outlet valve
→
• Slam-shut
→
• Regulator
Inlet and outlet sides of regulator under pressure
Tripping verification
→
• Inlet valve
→
• Outlet valve
• Regulator Increase setpoint to reach tripping
(without exceeding the outlet limits)
Disassembly
recommended frequency:
• Every 4 to 6 years (or less depending on
operating conditions)
• In the case of BMS 162 or 071, it is highly recommended to
check the condition of the diaphragm once yearly
Verification:
• Condition of O-rings, diaphragm, and lubrication
6
Open
Open
Open
In operation
Closed
Closed
replacement:
• O-rings, diaphragm
Tools:
• Spanners 10, 13, six-sided wrench 6
• Spanners According to DN size
• Emerson spanner ref. 197125 (bypass and pin disassembly)
• Valve plug closed
• Close inlet and outlet valves
• bleed off outlet pressure
• bleed off inlet pressure
• Unscrew impulse connection iS
• Remove BM cover (key 8)
• Unscrew fastening screw (key 9)
• Remove cap
• Remove BM
• Unscrew screws (key 10)
• Remove bonnet (key 11)
• Remove spring (rep. 12) and slam-shut valve plug (key 13)
• Unscrew bypass (key 1)
• Unscrew screws (key 14) (DN 100 and 150)
The removal of the orifice (not recommended) requires a
special extraction tool
reassembly
Figure 7.
Type OSE - Commissioning Schematic
• Perform the above operations in reverse order (respect
tightening torques)
• Replace O-rings at each disassembly
• The valve plug should be maintained in an upright position
using the packing gland to facilitate it's removal
• Precaution should be taken when removing or replacing
the valve plug to avoid damaging the segments
C57