KSB SICCA GLS Series, Руководство по эксплуатации

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SICCA
ATTENTION
14
Prior to possible transport, the valves must be flushed and
drained carefully.
If you have any questions please contact your KSB Sales Office.
8.1.2 Removing Actuators
If actuators powered by an external source of energy (electric,
pneumatic, hydraulic) need to be removed from the
valves or dismantled, the energy supply must be
shut down prior to starting any repair work and the
instructions in the sections 3, 8.1.1 and the operating
instructions of the actuator must be observed.
Valve actuators with integrated spring-loading feature cannot
be removed.
Caution : Springs under tension!
If you have any questions please contact your KSB Sales Office.
8.2 Maintenance
Our valves are largely maintenance free, materials of sliding
parts were selected to keep wear to a minimum. To ensure
reliable operation and to reduce repair costs, all valves -
especially those which are seldom operated or where access
is difficult–should be checked periodically.
The user is responsible for defining appropriate intervals for
checks and maintenance, depending on the application of the
valve.
The service life of non-maintenance-free valves can be
extended by :
- lubricating movable parts such as stem (200) and gland bolts
(not for oxygen valves) and through grease nipple provided
in the case of gate valve using suitable lubricants to DIN
51825 / equivalent
- timely changing of the packing rings
- timely replacing of the cover gasket (411)
The safety instructions in sections 3, 8.1 and the notes in section
9 must be observed.
9 Troubleshooting
9.1 General
All repair and service work must be carried out by qualified
personnel using suitable tools and genuine spare parts.
The safety instructions in sections 3 and 8 must be observed.
9.2 Faults &
Remedies
Fault
-
Leakage at the seat
Remedy - Remachine the seat on wedge/disc and body using
suitable regrinding equipment after dismantling the valve. Re-
grinding of body and cone seats should be continued until the
seats show a smooth and even ring.
Fault -
Leakage at the cover Gasket
Remedy - Retighten the cover flange connection Remedy
- Replace the gasket (411) after removing the cover bolting
(902/920.1). Clean the surfaces carefully before inserting a
new gasket.
On asbestos-free gaskets, no additional
sealing agents may be used. When using anti-
adhesive coatings, use sealing agents explicitly
recommended by the manufacturer of the sealing material.
If you have any further questions please contact nearest KSB
Sales office.
Fault -
Leakage of the Stuffing Box
Remedy - Retighten the stuffing box with the nuts (920.1) at
the gland flange (452). Make sure that the friction forces at the
stem do not increase too much.
Remedy - Replace the packing rings of the stuffing box;
Unscrew the nuts (920.2) and lift the gland flange (452). Clean
the stuffing box chamber thoroughly before inserting new
packing rings. Split packing rings should be inserted in such a
way that the slots are offset by 120
0
to 180
0
.