ABTQ-92 rev 02
Last review: 08-08-17
1/2
Abtech Limited, Sheffield, S9 2QJ, United Kingdom
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS FOR
ABTECH ‘APC10’ Photocell – SIRA10ATEX5274X, IECEx SIR 10.0171X
Marking
The marking shown is for a category 2 APC photocell.
The voltage range is 110V to 254V 50/60Hz and the max.
current for the apparatus is 10A and is shown on the label.
The ambient temperature range for which this product is
suitable is -40ºC to 55ºC and is marked on the label.
Installation
1) Choose a suitable location for mounting the photocell. Ensure that the photocell window is
positioned such that operation will not be influenced by any unnatural light.
2) Remove the lid fixing screws and open the lid. Using a small screwdriver, detach the green and
yellow cables from the terminal block and remove the lid. Do not allow the lid to hang from the
cable.
3) Using the mounting dimensions data provided, either in the product catalogue data sheets or
on the drawings supplied, mark out the positions for the mounting holes on the surface where
installation is required.
4) Drill the mounting holes for M6 fixing screws.
5) Place a mounting screw through one mounting hole in the box so that the thread of the screw
protrudes from the back of the box. Lift the box into place and:-
If clearance mounting holes are used, insert the protruding thread through the appropriate
clearance hole and secure with a nut on the other side of the mounting surface.
Or
If threaded holes are used, locate the end of the mounting screw over the threaded hole and,
using an appropriate screwdriver, tighten the screw.
6) Rotate the box to line up the remaining mountings and repeat (4) above until all mounting
screws have been fitted.
7) Install and secure the cable glands in accordance with the manufacturer’s instructions.
8) Insert the cables into the box leaving trailing leads of a length specified by site practice or the
site engineer and secure any cable armour in accordance with site practice.
9) Terminate the cables in the terminals provided in accordance with the requirements of BS EN
60079-14:2008 and as shown in the wiring diagram below. Re-connect the green and yellow
cables to the appropriate terminals.
10) Secure the lid by closing the lid and tightening the lid fixing screws.
Special Conditions for Safe Use
1) The maximum permitted load is 10A.
2) The enclosure and photocell window should be wiped only with damp cloth.
Earthing/Grounding
As an option, the APC Photocell may be provided with an external earth stud. If provided, it must
be connected to the appropriate earth bonding circuit before electrical power is connected to the
contents of the enclosure.
If earth tags are used for earthing or bonding of cable glands, these should be fitted in accordance
with the manufacturer’s instructions.
