European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com Tel: +44 (0)208 743 8880
Document D233-00-001-IS Issue 2 10-11-2022
Sheet 2 of 2
6)
Replacement of glass element
If the break glass unit has been operated the
broken glass element can be quickly replaced.
The break glass cover plate is removed by
unscrewing the 4 off M4 cap head screws attaching
it.
Once the cover is removed the broken glass will be
free to be removed, clean out any other fragments
of glass carefully.
To fit the new glass element rotate the top cam
clockwise by an angle of 50º (use a 6mm Allen
key) this will than allow the glass to fit back into the
pocket it sits in, resting on the pivot point and test
cam, release the top cam to rest on the top of the
glass element.
Pivot point Test Cam Top Cam (rotate)
Replace the cover plate and tighten the 4 off M4
cap head screws.
Ensure the glass element is free to move under the
cover plate. This can be done by running through
the units test operation. See section 5 of this
instruction manual.
7)
End-of-Line and Series Devices
All models can be fitted with series resistors, end-
of-line monitoring resistors, monitoring diodes,
Zener diodes and also specific customer modules if
supplied with direct current up to 50Vdc.
Part codes:
EOL (End of Line) device:
Resistor – ExxxR
Diode – ED1
Zener – ExxxZ
Series (In line) device:
Resistor – SxxxR
Diode – SD1
Zener – SxxxZ
LED
The unit can be wired with a maximum of 4 module
devices – see wiring schematic D233-06-001
When customer is fitting EOL or Series device
ensure device leads are insulated or routed so as
not to create an electrical short circuit.
The following table 1 shows limitations for all
devices.
Suggested EOL/
Series Device Type
Type of
component fitted
Value
End-of-Line
Resistor
330Ω
Suggested Min.
End-of-Line
Diode
Type 1N5401
2W
Series Resistor
330Ω
Suggested Min.
Series Zener
Diode Type
1N5333B
Suggested Sizes
3.3V
4.7V
5.1V
5.6V
6.2V
6.8V
10V
12V
