MAR-IN Controls SG 6100, Техническое руководство

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PNEUMATIC CONTROLLER
SERIES SG6100
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MAR-IN CONTROLS B.V. VAN UTRECHTWEG 8 –10 KRIMPEN A/D IJSSEL THE NETHERLANDS
Tel. + 31 (0)180 - 51 71 51 Fax +31 (0)180 - 51 89 14 info@mar-in-controls.com www.mar-in-controls.com
Cleaning the Baffle and Nozzle
- Dismount the Control Unit, as described in the previous paragraph
.
- Hold the baffle away from the nozzle a small amount and using a solvent and a soft lint free
cloth, clean the baffle and the nozzle tip.
Fig.8: Centring the relay vent baffle Fig.9 - Nozzle connection
- Blow 1.4 bar compressed air into the nozzle attachment through the nozzle connection (see Fig. 9).
- Replace the Control Unit, following the procedure of the previous paragraph in reverse order.
- Checkout the alignment of controller
.
Extraordinary maintenance
Alignment of the Controller
The purpose of the controller alignment is to ensure that, with the Set Pointer and Measured Value
Pointer coincident, the Proportional Band Dial may be rotated from Maximum to Minimum without a
significant change in the controller output.
The controllers are usually aligned so that, the Set Pointer and Measured Value Pointer coincide
and with the Proportional Band setting in either Reverse or Direct Action, the output is 0,6 bar (9
psi), this being the middle of the standard 0,2 - 1 bar (3 -15 psi) range. The alignment may be
made at other values by substituting the required value for the 0,6 bar (9 psi) in the following
procedure:
- Disconnect the measuring element link (13) at the side of measuring element.
- Adjust the Set Pointer to approximately mid-scale, overlap the Set Pointer and Measured Value
Pointer and fix the two together with tape or a clip.
- Rotate the Integral Action knob to 0.1 minute (Integral valve full open)