Zetkama zGLO, Руководство пользователя

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9.
REASONS OF OPERATING DISTURBANCES AND REMEDY
-
When seeking of valve malfunction reasons safety rules should be strictly obeyed
Fault Possible reason Remedy
No flow Valve closed Open the valve
Flange dust caps were not removed Remove dust caps on the flanges
Poor flow Valve is not open enough Open the valve
Dirty filter Clean or replace the screen
Clogged pipeline Check the pipeline
Control difficulties Dry stem Grease the stem
Gland packing tighten too much Slightly slacken gland nuts. Put attention to
keep stuffing box tightness
Stem leakage Too much loose on the gland Tighten the gland until tightness will
be reached
If necessary add packing rings in
stuffing box. Keep special caution.
Seat leakage Shut off not correct Tighten the handwheel without any
auxiliary tools
Seat or disc damage Replace the valve and contact supplier
or manufacturer
Apply the valve with balancing disc.
Check if the valve was assembled
according to arrow direction marked
on the valve
.
Pressure difference too much
Clean the valve. Fit strainer before the
valve.
Medium polluted with solid particles
Broken connecting flange Bolts tighten unevenly Replace the valve with new one
10. VALVE SERVICE DISCOUNTINUITY
All obsolete and dismantled valves must not be disposed with household waste. ZETKAMA valves are made of materials which can
be re-used and should be delivered to designated recycling centers
.
11. WARRANTY TERMS
- ZETKAMA grants quality warranty with assurance for proper operation of its products, providing that assembly of them is done