ULTRA 4 INSTRUCTION MANUAL
26
Fuse Location
The mains fuse is located inside the terminal compartment, under the
removable protective cover, as shown below:
DON’T FORGET
Before powering up the unit, ensure the protective terminal cover is in place.
Important Information
Please note that all units are supplied for safety reasons with a 20mm 1AT fuse
fitted as standard. Never operate the Ultra 4 with the protective cover removed.
An external switch or circuit breaker should be installed near to the Ultra 4 to
allow the supply to be removed during installation and maintenance. In addition,
the relay contacts should also have a means of isolating them from the Ultra 4.
Interconnecting cables must be adequately insulated in accordance with local
regulations. Strip back 30 mm of the outer insulation of the cable. Strip 5 mm of
insulation from the end of each conductor. Twist all exposed strands of the
conductor together. Insert the stripped conductor into the terminal block as far
as it will go and tighten the terminal block screw. Ensure that all strands are
firmly clamped in the terminal block and that there is no excess bare conductor
showing, and no stray strands.
Important Information
If the equipment is installed or used in a manner not specified in this
manual, then the protection provided by the equipment may be impaired.
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