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5   Adjusting the Switching Unit 

Flow switch 

5.3   Flow switch version VHS... , VKS... and VK3... 

In order to adjust the switching unit, open the cover of the switching head (Fig. 15)
(not required for VK3...)

         Fig.15 

Subsequently loosen the locking screw (2.5 hexagon socket screw for the brass and stainless steel
version or recessed head screw for the plastic version) and position the switching unit until the red or
white arrow are visible at the entry of the switching contact guide for a desired make contact (Fig. 16) or
break contact (Fig. 17) respectively.

The fine adjustment of the switching point can be carried out on the basis of the arrow length:
Movement towards the arrow head: Switching point is set to lower flow rate.
Movement towards the arrow tail: Switching point is set to higher flow rate.

Carefully retighten the locking screw.

We recommend you to use lacquer/threadlocker to secure the locking screw of the switching unit after
carrying out individual adjustments.

Close the cover until it locks into place (not required for VK3...).

Adjustment of the switching unit is not required if a desired ex works switching point setting has been agreed 
with the customer. 

         Fig. 16  

Fig. 17 

Page 12 of 15

Copyright ©  Jlso Tec Trade GmbH

JLSO Tec Trade GmbH 

In den Birken 98

Fon:

 

+49 (0) 

6369 230 9961

 

info@jlso-tec-trade.de

Fax:

 

+49 (0) 

6369 230 9963

 

https://jlso-tec-trade.de

Daniel

 

H.

 

Meckel

D-66999

 

Hinterweidenthal

Summary of Contents for VH M 1 1 1 Series

Page 1: ...age 1 15 www jlso tec trade de Page 1 of 15 Copyright Jlso Tec Trade GmbH JLSO Tec Trade GmbH In den Birken 98 Fon 49 0 6369 230 9961 info jlso tec trade de Fax 49 0 6369 230 9963 https jlso tec trade...

Page 2: ...g connector EN 175301 803 A 25 4 2 3 Sensor plug M12x1 4 pole 26 4 2 4 Fixed connecting cable 26 5 Adjusting the Switching Unit 27 5 1 Contact type 27 5 1 1 Standard contact 27 5 1 2 Change over conta...

Page 3: ...sion VH X is designed for application in explosive atmospheres The ignition energy of the explosive atmosphere should not be below 60 J Please observe the following separation of zones The constructio...

Page 4: ...witch and the monitored system only use JLSO flow switches for minimum or maximum monitoring of the flow of liquids Always follow and adhere to the flow switch installation instructions Never operate...

Page 5: ...ive loads Details of the protective circuit can be requested from the manufacturer 3 Material Specifications of Wetted Components Type VH M 1 1 1 VH M 1 1 C VH M 1 1 1X VH M 3 3 3 VH M 3 3 3X VH M P 1...

Page 6: ...re desired Please make sure that there are no external magnetic fields in the immediate vicinity of the flow switch since these can impair device functioning Fig 2 There is an arrow on the flow switch...

Page 7: ...tallation with the help of brass soldering threaded nipples or stainless steel welding threaded nipples including O ring V 05M V 06M up to DN 50 V 07M up to DN 50 Fig 4 V 06M from DN 50 V 07M from DN...

Page 8: ...before connecting the wires of the mains cable CAUTION Ensure that the maximum electrical contact load specified on the type plate is never exceeded otherwise the reed contact integrated in the switc...

Page 9: ...unction box pos 2 Tighten the cable gland PG 9 pos 5 Place the junction box pos 2 on the connector pos 1 and retighten the central screw pos 6 Fig 7 Fig 8 Fig 9 Fig 10 To guarantee the protection clas...

Page 10: ...ing to the connection diagram see Fig 13 or Fig 14 Standard contact Flow switch version VH3 VK3 Flow switch version VH3 X Fig 13 To prevent electrostatic charging the VH3 X devices have to be connecte...

Page 11: ...wise agreed with the customer the switching unit is factory set as a make contact i e the reed contact opens if the set switching point is exceeded 5 1 2 Change over contact only for VH3 For flow swit...

Page 12: ...ried out on the basis of the arrow length Movement towards the arrow head Switching point is set to lower flow rate Movement towards the arrow tail Switching point is set to higher flow rate Carefully...

Page 13: ...wise agreed with the customer the switching unit is factory set as a make contact i e the reed contact opens if the set switching point is exceeded 5 1 2 Change over contact only for VH3 For flow swit...

Page 14: ...deviate from the details in these instructions Please observe the details on the type plate Reduced pressure level for devices with copper pipe section Please observe the details on the type plate 8...

Page 15: ...rate m h DN 50 30 25 DN 80 80 65 DN 100 150 100 V 05M mounting length 51 mm DN 150 200 170 DN 100 100 40 DN 150 150 95 V 06M mounting length 111 mm DN 200 200 160 DN 50 30 DN 80 100 DN 100 150 V 01M...

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