Voith 91868550, Instructions And Operating Manual

Page: 14 / 27

Instruction and Operating Manual
Overspeed Protector CTO-B45202
2019 / 02
J.M. Voith SE & Co. KG │ Division Digital Ventures
Page: 14 / 25
918 3626018864 en D – 74564 Crailsheim Version: 2.1
5.2 Hydraulic connection
Flanging of the overspeed protector to a hydraulic consumer is effected via connecting
bores at the overspeed protector bottom.
O-rings are used for sealing the connecting flange.
For position and dimensions of the connections, please see Chapter 9.

Wear protective glasses when connecting the overspeed protector hydraulically.

Pay attention to the correct pressure stage when selecting pipes, flexible tubes, unions,
and flanges.

Immediately replace any damaged pipes and flexible tubes.
When assembling the pipes, ensure that they are not fastened to any moving equipment,
but rather to fixed structures free from vibration.
Alterations in length caused by temperature variations must not apply constraining forces
to the overspeed protector.

Fixing and hydraulic connection to a connecting flange is made via the hydraulic part.
O-rings are used for sealing. The customer's connecting surface has to correspond to
Ra ≤ 1.6 µm and Rmax ≤ 6.3 µm.

Residual oil (up to 0.2 l) may leak out when removing the screw plugs. Collect the oil in
a suitable container and dispose of it properly.

Do not use fibrous or hardening sealing compounds, such as hemp or mastic, for
sealing the connections and pipe unions.
5.3 Electrical Connection
For wiring diagram, see Chapter 9.

Only a certified electrician with experience and knowledge in the field of explosion
protection is allowed to connect the way valve module electrically in accordance with
the electro-technical rules and legal provisions of the country of manufacture. When
connecting the overspeed protector within the explosion hazardous area, the electric
feed-in lines have to be connected in housings according to a standard type of
protection as per EN 60079-0, section 1.

Work on the electrical system or with operational equipment is only to be completed by
electrical technicians or by trained personnel under the guidance and supervision of an
electrical technician according to technical electrical regulations and the legal
regulations of the respective country.

Signal and supply lines provided by the customer to the overspeed protector need to be
screened and laid separately from each other.

When connecting the customer's lines, please avoid parallel running of lines with the
lines of the current converter assemblies.

Poor connecting points do not guarantee a reliable operation of the overspeed
protector.