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In the case of uncertainty on any point, please contact the local Trimod Besta agent or the
manufacturer.
Replacement of the switch module
The switch does not have to be removed from the process vessel in order to replace the switch
element.
1.
Observe chapter 1 «Safety instructions»
2.
Cut off power supply before opening enclosure cover! Be aware of the danger of hazardous
voltage!
3.
Loosen 2 cover screws with screwdriver.
4.
Check that terminals are not live.
5.
Disconnect wires, including grounding and equipotential connection.
6.
Loosen 2 Allan screws (Allan key 5 mm – 3/18") on the side of the terminal block.
7.
Unscrew switch module (together with intermediate temperature piece, for ZH... and ZTD...
types) from the flange module.
8.
Make sure that the O-ring seals or flat gaskets fit properly.
9.
Fit replacement module (together with intermediate temperature piece, for ZH... and ZTD...
types) and tighten 2 screws.
10. Re-connect wires including grounding- and equipotential bonding connection (see connection
diagram inside cover and attached switch operating instruction).
11. Energize power supply only when hinged cover is closed!
Follow the installation instruction LTI004X «Replacement of the switch module»
7.
Fire protection
Trimod Besta level switches must be protected against external fires.
8.
Disposal
Trimod Besta level switches are free of asbestos or otherwise hazardous materials (2011/65/EU - RoHS).
Disposal to be carried out according to environmental and local regulations.
www.trimodbesta.com
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LTB007X │ 2016.04
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