GreenBrook TLS Installation & Operating Instructions

Time delay switch

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Thank you for purchasing a quality time delay switch from Greenbrook. Please read
these instructions fully prior to initial use.
Every effort has been made to ensure that the guidance information on this sheet will
enable the installation of the switch to be carried out safely and correctly.
The TLS is suitable for controlling incandescent (GLS), fluorescent and compact
fluorescent lighting. The timer can be used on its own, or with other units in a 2-wire
(no neutral) lighting circuit, and can therefore be installed on new installations or
replace existing single gang switches.
All metal boxes must be earthed.
Please ensure that the top and bottom lugs are removed, if fitted, from metal wall boxes
before fitting as there is a danger of the common terminal (Marked Com) fouling a
mounting lug and causing an earth fault if boxes having four lugs are used.
The TLS has been designed for mounting on a 20mm or 25mm deep standard BS single
gang accessory box. However, it is recommended that deeper boxes are used where
extra space is required for additional cables, for example when looping in. Please ensure
that there is adequate space for wiring.
It is recommended that if using moulded backing boxes, please ensure that the back box
only has two mounting lugs as certain manufacturers do not allow adequate clearance
for the Time Delay Switch terminal connections. Some moulded boxes also have two
locating pips on the mounting face which can obstruct the Time Delay Switch and
prevent it from fitting flush. These will need to be ground off.
If mounting on surfaces such as unplastered brickwork or the mounting box is
completely true to the wall surface, please avoid over tightening the mounting screws,
as this may cause the switch faceplate to distort and in turn lock the plunger in the
"ON"position.
INSTALLATION/OPERATING
INSTRUCTIONS FOR
TIME DELAY SWITCH - TLS
IF IN DOUBT, INSTALLATION SHOULD BE
MADE BY A QUALIFIED ELECTRICIAN
IN ACCORDANCE WITH CURRENT
WIRING REGULATIONS.
I I M M P P O O R R T T A A N N T T
I I N N S S T T A A L L L L A A T T I I O O N N

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Summary of Contents for GreenBrook TLS

  • Page 1 I I N N S S T T A A L L L L A A T T I I O O N N The TLS has been designed for mounting on a 20mm or 25mm deep standard BS single gang accessory box.
  • Page 2 O O P P E E R R A A T T I I O O N N The switch is operated by pressing the plunger button. This will “make” or “break” the change-over contacts. The plunger will gradually return to its original position during the time delay sequence, eventually returning the change-over contacts to their original position using the snap action of the switch.

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