ITT Engineered Valves BioviZion, Инструкция по установке, эксплуатации и обслуживанию, Страница: 23 / 32

6 Maintenance
6.1 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.
6.2 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 weep hole Replace the valve diaphragm
Sealed bonnet Fluid weeping from the plug
Loosen the v-notch vent plug (0.75-2
inch) or sealing screw (0.50 inch En-
viZion or 0.25-.50 inch BioviZion) 2-3
turns to check
Replace the valve diaphragm
Topworks Spindle binding, excessive noise, or
dried lubricant Manual - Lubricate the topworks
Actuated - Replace the actuator
6.3 Lubrication requirements
Lubrication schedule
Remove residual grease prior to re-lubrication. Lubricate the spindle, o-rings, and mating surfaces when-
ever the topworks is disassembled.
Acceptable lubricants
Brand Lubricant type
Chevron FM ALC EP 2 (FDA Compliant)
Fuchs
Cassida FM CSC EP2 (NSF H1 Compliant)
Fuchs Cassida GTS 2 NSF H1 Compliant
6 Maintenance
EnviZion and BioviZion Valves Installation, Operation, and Maintenance Manual 21