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SS40 SURGE OPERATION / MAINTENANCE MANUAL
•
Connect suppressor supply port to 20-psig air supply and test pilot valve for
leakage and actuation. Replace if escaping air can be heard or valve will not
discharge when depressed.
•
Insert small flat blade screwdriver in center hole of push plate to prevent shaft
from turning. Remove push plate by rotating it CCW.
•
Remove pilot valve boss using 3/4” pin tool to rotate boss CCW.
•
Disassemble pilot boss assembly and replace pilot assembly or other worn
parts.
•
Check .020 diameter air bleed port in back wall of suppressor for possible
blockage.
NOTE:
All polypropylene and PTFE parts, when disassembled, should be
thoroughly washed and free from acid residue for handling purposes.
2.7 ASSEMBLY
•
Check that all parts are clean and dry.
•
Use a new pair of protective gloves to prevent carry over contamination.
•
Reverse disassembly procedure starting with reassembling pilot boss
assembly.
•
Before reinstalling diaphragms, check diaphragms for white colored creases
or other signs of wear or damage. Replace if necessary.
•
Complete reassembly by re-
clocking 1/16” diameter mark in head to the
original position. (Failure to do so will result in air fitting misalignment after
mounting suppressor.)
•
Retorque union nut using strap wrench and torque wrench to 65 ft-lbs.
•
Reinstall suppressor on pump to hand tight plus 1/4 turn. If connection leaks,
increase an additional 1/8 turn only. If leaking cannot be stopped, remove
suppressor, replace disk seal and check mating surfaces for scratches or
depressions.
