Bell & Gossett V1000520 Ultra Setter Pressure Independent Control Valves - Manual (Page 16)

Maintenance
Precautions
WARNING:
• All procedures must be performed by qualified personnel.
• When the process fluid is hazardous, thermal (hot or cold), or corrosive, take extra
precautions. 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 particular fluid in the line.
Valve inspection
Periodically inspect the valve for signs of leakage or corrosion.
WARNING:
Risk for property damage, serious personal injury or death. You must replace the valve if
corrosion or leakage is found.
Service cartridge caps and drain caps
Any field adjustment of factory installed drain caps or cartridge caps affects the
compression of the seal and can cause leakage. This adjustment necessitates the removal,
cleaning, and resealing of those parts per the following instructions.
1. Remove the cap from the valve. Do not damage the valve, cap threads, or O-ring seal.
2. Perform the necessary service on the valve or system.
If the valve or any of the components appear to have been damaged, replace them.
3. Make sure that the male threads of the cap and the female threads of the valve are
clean and that there is no debris present.
4. Make sure that the O-ring seal is seated on the cartridge cap.
NOTICE:
Do not use any thread sealant or lubricant when assembling the cartridge or drain cap
as it can prevent the O-ring seal from sealing properly.
5. Thread cap into the valve until it is finger tight.
6. Tighten cap to the following specification:
Component Seal Torque
Cartridge cap — all sizes O-ring 25.0 ft-lbs. + 7.0 ft-lbs. / 0
Maintenance
14 Ultra Setter ™ Pressure Independent Control Valves Installation, Operation and Service Manual