FLK Gas Sampling System - MPIP - Free

SQ253 Valve Combination
4.5 Four-way ball valve
The 4-way ball valve is constructed in steel with an electrical actuator drive to DIN ISO 5211/3337.
The ball valve material is complete in PEEK. The full sealing tightness is achieved by a pressure-aided, maintenance-free
sealing system.
The actuator drive is also maintenance-free and fitted with an anti-blocking motor with temperature monitoring.
4.5.1 Removing the 4-way ball valve
• Remove inside the housing of the 4 Way-valve. Loosen the 2 screws inside the valve box and remove the valve
from the drive.
Note: Attention must be paid to the connecting cable. This is so long that the complete unit can be lifted
out.
4.5.1.1 Checking the limit switches:
• Remove the complete unit as described above.
• Check the position of the 4 limit switches
• The control is provided by the OP3 in the control cabinet.
• A selected position is approached by entry in the CTR 16 (e.g. Measure).
• Assembly takes place in the reverse sequence.
Important! When setting the limit switches, pay attention to the 24VDC control voltage.
Copyright ® SIEMENS Page 71 04/04