ITT Engineered Valves Advantage 2.1, Руководство по обслуживанию

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3 Maintenance
3.1 Precautions
WARNING:
• All procedures must be performed by qualified personnel.
• When the process fluid is hazardous, thermal (hot or cold), or corrosive, take extra pre-
cautions. Employ the appropriate safety devices and be prepared to control a process
media leak.
• Always wear protective clothing and equipment to safeguard the eyes, face, hands, skin,
and lungs from the fluid in the line.
• Do not disassemble the actuator in the field. The actuator contains energized springs
which can cause injury. The product is designed to be recycled in its entirety.
CAUTION:
• Disconnect electrical, pneumatic, and hydraulic power before servicing actuator or auto-
mation components.
3.2 Inspection
Inspection area What to look for Action if problem is found
External valve parts Excessive wear or corrosion • Replace the affected parts
• Contact ITT to obtain replace-
ment parts or for specific in-
structions
Non sealed bonnet Fluid weeping from the plug Replace the valve diaphragm
Sealed bonnet Fluid weeping from the plug
Loosen the v-notch vent plug 2-3
turns to check
Replace the valve diaphragm
Actuator's bonnet weep hole and air
ports Air pressure Contact ITT for specific instructions
Topworks Spindle binding, excessive noise, or
dried lubricant Contact ITT for specific instructions
Diaphragm and valve body Leakage between the diaphragm and
valve body Tighten the bonnet fasteners
For more information, see:
• 3.5 Replace the valve diaphragm on page 8
• 3.3 Tighten the bonnet fasteners on page 7
3.3 Tighten the bonnet fasteners
CAUTION:
Do not tighten fasteners while the system is pressurized or at elevated temperatures (greater
than 38°C | 100°F).
3 Maintenance
Advantage® 2.1 Actuator Maintenance Manual 7