PLUS
300 EXPERT
U THR
Pag. 7
USE AND MAINTENANCE MANUAL
Rev. 01-18
INSTALLATION
Raise the transparent cover that shields the magneto-thermal cut-out switch and
remove the screw cover on the right-hand side.
Undo the 4 fixing screws at the front of the box.
Open the front of the box, lift it and slide the two hinges out as far as they will go. Bend
the hinges and rotate the front panel by 180° downward to get access inside the panel
Using the furnished drilling layout make four fixing holes on the wall. Using holes made
on previous point fix the bottom with 4 screws of a length suitable for the thickness of
the wall to which the panel will be attached. Fit a o-ring (supplied) between each screw
and the box backing
Make all the electrical connections as illustrated in the diagram for the corresponding
model (see relative table in APPENDICES).
To effect correct electrical connection and maintain the protection rating, use
appropriate wire/raceway grips to ensure a good seal.
Route the wiring inside the unit in as tidy a fashion as possible: be especially careful to
keep power wires away from signal wires. Use clips to hold wires in place.
Close the front panel, making sure that all the wires are inside the box and that the box
seal sits in its seat properly.
Tighten the front panel using the 4 screws, making sure the O-rings on the head of
each screw are used.
Power up the panel and carry out thorough reading/programming of all the
parameters.
Be careful not to over-tighten the closure screws as this could warp the box and
compromise proper operation of the membrane-type keypad.
Install short-circuit overload safety devices on all the power cables connected to the
PLUS300 EXPERT U THR so as to prevent damage to the device. Work and/or
maintenance must ONLY be carried out on the unit after disconnecting the panel from
the power supply and from any inductive/power loads: doing so allows the worker to
do his job safely.
CHAP. 2 - Installation
2.3
