cashco 5381 Manuel d'installation, d'utilisation et d'entretien - Page 5
Parcourez en ligne ou téléchargez le pdf Manuel d'installation, d'utilisation et d'entretien pour {nom_de_la_catégorie} cashco 5381. cashco 5381 9 pages. Pressure reducing sanitary regulator
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VII. TROUBLE SHOOTING GUIDE
1. Erratic operation; chattering.
Possible Causes
A.
Oversized regulator; inadequate rangeability.
B.
Worn piston; inadequate guiding.
C.
Weakened/broken piston spring.
2. Regulator can't pass sufficient flow.
Possible Causes
A.
Regulator undersized.
B.
Incorrect range spring (screwing in CW of adjusting screw does
not allow bringing pressure level up to proper level).
C.
Too much droop.
3. Leakage through the spring chamber vent hole.
Possible Causes
A.
Normal-life diaphragm failure.
B.
Abnormal short-life diaphragm failure.
C. O-ring failure.
4. Sluggish operation.
Possible Causes
A.
Fluid too viscous.
5. Excessive pressure downstream.
Possible Causes
A.
Regulator not closing tightly.
B.
Downstream block.
C.
No pressure relief protection.
D.
Restricted diaphragm movement.
IOM-5381
SECTION VII
A1. Check actual flow conditions, re-size regulator for minimum and
maximum flow.
A2. Increase flow rate.
A3. Decrease regulator pressure drop; decrease inlet pressure by
placing a throttling orifice in inlet piping union.
A4. Install next step higher range spring. Contact factory.
A5. Before replacing regulator, contact factory.
B.
Replace trim ( possible body replacement).
C.
Replace piston spring. De ter mine if corrosion is causing the
failure.
A1. Confirm by opening bypass valve together with regulator.
A2. Check actual flow conditions, re-size regulator; if regulator has
inadequate capacity, consult factory.
B.
Replace range spring with proper higher range. Contact factory.
C1. Review droop expected.
C2. Contact factory.
A.
Replace diaphragm.
B1. Can be caused by excessive chattering. See No. 1. to remedy
chatter.
B2. Can be caused by corrosive action. Consider alternate diaphragm
material.
B3. For composition diaphragms, assure not subjecting to over-tem-
perature conditions.
B4. Downstream (outlet) pressure buildup occurring that overstresses
diaphragms. Relocate regulator or protect with safety relief valve.
C.
Replace O-ring (15), apply appropriate torque.
A.
Heat fluid. Contact factory.
A.
Inspect the seating. Clean and lap metal seat surfaces; replace
if lapping does not remedy. If composition seats are depressed,
nicked or embedded with debris, replace trim.
B.
Check system; isolate (block) flow at regulator inlet - not outlet.
Relocate regulator if necessary.
C.
Install safety relief valve, or rupture disc.
D.
Assure no moisture in spring chamber at temperatures below
freeze point. Assure no dust or debris entering vent opening. If
rainwater or debris can enter, re-orient regulator.
Remedies
Remedies
Remedies
Remedies
Remedies
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