33 12 16.26 - 001-A - Response AAN-ANR Butterfly Valves - Garney ...
33 12 16.26 - 001-A - Response AAN-ANR Butterfly Valves - Garney ... 33 12 16.26 - 001-A - Response AAN-ANR Butterfly Valves - Garney ...
Triton XR-70,Triton XL & Groundhog® Butterfly Valves (24” & Larger) MAINTENANCE Maintenance of valves by owner is generally limited to actuators and shaft seals. In some instances, valve design permits field adjustment seats when leakage occurs. Unless the owner has skilled personnel and proper equipment, any major rework will require removal of the valve from the line. Depending on condition, valve may require return to the manufacturer. ANNUAL MAINTENANCE 1. Cycle valve to verify operation and no interference in line. 2. Close valve and check for leakage. If leakage is detected, check actuator stops to verify that disc is fully closed. If leakage persists, remove valve to inspect seat. Contact Pratt’s Field Service Deparment for information regarding adjustment or replacement of seat. 3. 4. Check flange connections for leakage. Tighten bolts accordingly. Check top trunnion area for shaft leakage. If leakage is detected, replace valve packing. 5. If Access to the line is possible, then removal of scale that may interfere with disc travel is suggested. The seat should be inspected for wear and the taper pin nuts should be tight. NOTE: LUBRICATION IS NOT REQUIRED. WARNING Removal of actuator from valve shaft will cause disc to rotate, striking persons or objects in the disc path, causing injury to persons and damage to valve. Block or lock disc before removing actuator. Typical maintenance would be shaft packing replacement and actuator adjustment. Seal leakage, broken parts and difficult operation should be discussed with Pratt’s Service Department before valve repairs are attempted. Pratt Service Engineers are available to perform or supervise valve repairs in the field. Stop line flow and isolate from line pressure prior to performing any corrective maintenance. After completing repair, cycle valve through one complete operating cycle and after line pressure has been restored, inspect for leakage. 24TRIGD Revision Date: 7/13/10 10
Triton XR-70,Triton XL & Groundhog® Butterfly Valves (24” & Larger) TROUBLESHOOTING GUIDE Problem Causes Remedies •Packing Leak Leakage between valve and actuator •First, cycle the valve several times. This should adjust the packing. If this fails, clean packing bore and replace packing. Bottom trunnion leaks •Packing or gasket leak •Replace bottom shaft packing, o-ring or gasket. Valve leaks when closed •Disc not fully closed or past fully closed •Adjust actuator closed position stop. •Disc edge wear or damage •Rubber seat wear or damage •Clean and/or repair disc edge. •Adjust or replace valve seat* Chainwheel jams •Poorly fitting chain •Replace with correct chain. Valve hard to operate •Foreign material in valve •Remove obstructions Automatic valve does not actuate •Corroded actuator parts •Loose actuator •No power source •Improper Signal •Burned out or impaired component •Clean and grease actuator •Apply Loctite or Omnifit locking compound and tighten bolts. •Check incoming power source and replace fuses or reset pressure. •Check actuating signal sequence. •Check and repair or replace solenoids, motors and relay devices. * Seat replacement should not be performed by untrained/unqualified personnel. In the event that seat replacement is needed, please contact Henry Pratt Field Service. 24TRIGD Revision Date: 7/13/10 11
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Triton XR-70,Triton XL & Groundhog®<br />
<strong>Butterfly</strong> <strong>Valves</strong> (24” & Larger)<br />
MAINTENANCE<br />
Maintenance of valves by owner is generally limited to actuators and shaft seals. In some instances, valve design<br />
permits field adjustment seats when leakage occurs. Unless the owner has skilled personnel and proper<br />
equipment, any major rework will require removal of the valve from the line. Depending on condition, valve may<br />
require return to the manufacturer.<br />
ANNUAL MAINTENANCE<br />
1.<br />
Cycle valve to verify operation and no interference in line.<br />
2. Close valve and check for leakage. If leakage is detected, check actuator stops to verify that disc is<br />
fully closed. If leakage persists, remove valve to inspect seat. Contact Pratt’s Field Service Deparment<br />
for information regarding adjustment or replacement of seat.<br />
3.<br />
4.<br />
Check flange connections for leakage. Tighten bolts accordingly.<br />
Check top trunnion area for shaft leakage. If leakage is detected, replace valve packing.<br />
5. If Access to the line is possible, then removal of scale that may interfere with disc travel is suggested.<br />
The seat should be inspected for wear and the taper pin nuts should be tight.<br />
NOTE: LUBRICATION IS NOT REQUIRED.<br />
WARNING<br />
Removal of actuator from valve shaft will cause disc to rotate, striking persons or objects in the disc<br />
path, causing injury to persons and damage to valve. Block or lock disc before removing actuator.<br />
Typical maintenance would be shaft packing replacement and actuator adjustment. Seal leakage, broken parts<br />
and difficult operation should be discussed with Pratt’s Service Department before valve repairs are attempted.<br />
Pratt Service Engineers are available to perform or supervise valve repairs in the field.<br />
Stop line flow and isolate from line pressure prior to performing any corrective maintenance.<br />
After completing repair, cycle valve through one complete operating cycle and after line pressure has been<br />
restored, inspect for leakage.<br />
24TRIGD Revision Date: 7/13/10<br />
10