Einbau- und Betriebsanleitung
Installation and Operating instructions
Instructions de montage et de service
6702-8010
02/2015
Ventile drucklos machen und Rohrleitungen entleeren gemäß Vorschriften.
Zum Tausch der Kegelgruppe muß der Stellantrieb abgebaut werden (siehe hierzu die Betriebsanleitung des jeweiligen
Stellantriebes).
Durchgangs und Verteilventile:
Deckel (201) vom Gehäuse (101) lösen
Kegelgruppe aus Deckel (201) herausziehen und austauschen.
Dichtflächen am Gehäuse reinigen
Deckel (201) mit Kegelgruppe (300) auf Gehäuse (101) aufsetzen und kreuzweise
festschrauben
(Anzugsmomente siehe Tabelle im Anhang)
Stellantrieb gemäß Betriebsanleitung auf Ventil aufbauen und Endabschaltung überprüfen.
1
General Information
The RTK is an air (or water) operated valve specifically designed to remove the solids which fall to the bottom of the boiler
(bottom Blowdown). It is used with a RTK blowdown timer to control bottom blowdown, ensuring that the recommended boiler
blowdown cycles occur with minimum heat loss, avoiding duplication or omission.
The frequency of bottom blowdown normally depends upon the boiler operating regime and the boiler manufacturers instructions,
as a minimum it is typically done once a day for up to five seconds
The air/water supply is switched on by the solenoid valve, causing the piston to move against the spring pressure.
The valve spindle (attached to the piston) moves the valve cone away from the seat, opening the valve fully. As the valve is
opened, a scraper ring removes any deposits on the valve stem protecting the seals. On release of the air/water pressure, the
springs return the valve to the closed position.
The manual override lever is pushed downwards to lift the lower connector plate and open the vlave. The locking pin must first
be removed. The valve may be locked in the open position as shown in Figure 1 (inset)
The valve differentiates through the type, nominal bore, nominal pressure and the material of body and gaskets and the shape of
flanges. For different control purposes, several different types of cones and inner designs are used.
attention!:
Valves shall only be used for the appropriate design- and operation data
The body material and nominal pressure of the valve is written on the valve body. These data have to fit the operation data and
have to be suitable for the medium.
Every valve has an unique serial number, which is written on the name plate of the valve in the box "W. Nr.". For ordering spare
parts, always give the serial number of the valve. (see Appendix Figure 1)
Several tests (pressure testing, leakage testing,...) are done in the work shop for every valve. Also the set up of the valve is done
in the work shop, therefore a calibration or set up of the valve is not necessary.
caution!:
Before beginning to install or operate valve please read "hazard warings...". 0000-7004
Only trained and qualified specialist staff may install and commission valves.
2
Installation and connection
2.1
Fitting instructions
Before installing valve following items should be read:
installation space:
The installation point should allow sufficient space to ensure correct maintenance and enough space to open the cover of
the actuator. Motor valves installed outdoors should have suitable weather protection such as a sun and rain hood.
before installation:
the guard caps should be removed from the flanges.
