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SERIES: KM-O(ST) & KM-T(ST)
Operating and maintenance instructions
4. NORMAL OPERATION
Normal manual force is sucient to operate ball valves designed
for manual operation. The use of lever extensions to increase
the actuating torque is not permitted.
Note: In EN 12570: Manual forces, standard values are defined
according to lever length or handwheel-Ø.
Operate actuated ball valves via the control system signals.
Ball valves supplied with actuator by manufacturer Kugelhahn
Müller are precisely adjusted and shall not be changed as long
as the valve functions correctly.
Ball valves do not require regular maintenance. However, when
checking the pipe section at suitable intervals make sure that
there is no leakage at the flange and screw connections of
the valve body and at the shaft seal. Concerning leakage and
repairs, see section 4.2 (Troubleshooting).
It is recommended to operate ball valves that permanently
remain in the same position once or twice per year.
4.1 MAINTENANCE
Subject to regular visual inspection of the pipe section, the
valve does not require special maintenance.
If an actuator is available, observe the respective manufacturer's
instructions.
If valve is used in corrosive/abrasive fluids and/or at the
threshold of the pressure/temperature limits and/or subject to
(very) frequent operation, the ball valve should be inspected
at suitable intervals, but at least once or twice per year.
In case of faults, see section 4.2 (Troubleshooting).
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