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d. If using graphoil a seal, gently tighten the upper body onto the lower body, and then tighten the set screw .
e. The tool is now ready to go back into service .
Changing a Coupon/Checking Probe End
Tools needed
ƒ Clean rag
ƒ Cleaner/solvent
ƒ 320 grit or finer sand paper
ƒ Medium adjustable wrench
ƒ Molykote 55 lubricant or other silicone/lithium lubricant
ƒ Flat tip screwdriver
1. Remove tool holder from the process pipeline by following instructions for retraction .
2. Remove old coupon or inspect the rod/shaft as needed .
3. Clean the rod/probe shaft . See previous section for procedure .
4. If using a coupon holder, attach the new coupon .
5. Reinstall the tool holder into the pipeline by following instructions for insertion .
Troubleshooting
Leaks
Multi-Port Valve Leaks
1. Isolate and bleed down the pressure, and attempt to tighten the leak point . If leak persists, continue with next step .
2. Re-tape the fittings on the multi-port valve .
a. Remove the entire holder from the process line .
b. Remove the multi-port valve from the holder .
c. Disassemble and remove all the old Teflon tape from multi-port valve and then re-tape the fittings .
d. Reassemble the multi-port valve using a small amount of anti-seize lubricant on each fitting . Do not over-tighten
the fittings as this can cause a leak point .
e. If leak persists, continue with the next step .
3. If the leak persists at a particular point, close the isolation valve, relieve pressure with bleeder valve, and contact
your representative or factory customer service .
14
Sentry Equipment Corp
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