Technical information

Page 34
These manual release units provide a robust
module with a hinged flap retained by frangible
washers which ensures that there is an audit trail
following a manual release.
The T528 provides access to a pull handle which
can be connected to the release levers on the
gas containers using wire rope.
Technical Specification
Dimensions: 71H x 71W x 64D (max) mm
Weight: 100g
Environmental: IP54
Product Codes
526.001.018
T528 Mechanical Manual Extinguishing Release
Unit - Unbranded
527.001.013
Spare Frangible Washers (Pack of 25)
Datasheet - Product Code PSF30 “T530 Fire
Detection & Extinguishing Systems Control Unit”
Manual - 18A-04-D1 “Fire Detection Manual”
T528 Mechanical Manual Release Unit
The T526 and T529 are large mushroom head
robust push buttons for use on any extinguishing
release system, although integral resistors are
fitted to suit T520, T530 and NTR panels. The
switch is double pole for maximum reliability.
These switches can be surface or flush mounted
using standard UK style single gang electrical
back boxes.
Operation will vary according to the panel used.
Typically on the T520 and T530 release of gas is
held for as long as the T526 HOLD switch is
depressed. If the switch remains depressed for
more than 4 minutes in the quiescent mode then
a fault condition is raised. The T529 ABORT
switch will typically revert the system back to
Manual mode.
Technical Specification
Dimensions: 71H x 71W x 64D (max) mm
Weight: 100g
Environmental: Designed for indoor use
Product Codes
526.001.019
T526 Extinguishing Release Hold Button Unit -
Unbranded
526.001.020
T529 Extinguishing Abort Button Unit -
Unbranded
Datasheet - Product Code PSF30 “T530 Fire
Detection & Extinguishing Systems Control Unit”
Manual - 18A-04-D1 “Fire Detection Manual”
T526 HOLD & T529 ABORT Switch Unit
A stand alone manual extinguishant release unit
with selectable activation and end of line resistors
making the T561 compatible with MXCE,
Prescient, System 1700 and NTR Extinguishing
Panels.
Product Code
509.030.017
T561 Extinguishing Release Manual Callpoint.
T561 Electrical Manual Release Unit