SL-014 v1.6 Page23
Document Ref: SL-014 v1.6
WARMUP
600s
With power applied the system should undertake its power up sequence and
then commence a warm up period. The warm up period is there to allow
connected detectors to stabilise before operation. Note that certain detector
types, Oxygen sensors in particular take longer to stabilise. Typical warmup
periods as:
Systems incorporating Oxygen detectors : 15 Minutes
Systems without Oxygen detectors: 5 Minutes
During the warm up period check that each connected detector or device has power and
communication. The following diagram shows the three main terminal PCB types for detectors and I/O
interface nodes and the relevant check points.
Warm Up Period
With sensors connected and after the TOC-635 controller has completed its warm up the operating
system will go to normal operation mode.
Normal Operation
In normal operation mode the TOC-635 communicates to each detector or node in turn and displays the
data on screen. Pressing the button once will activate the back light, each button press then cycles the
display through each channel.
For example a three channel system with a Flammable gas detector, a Carbon Monoxide Detector and
an Oxygen detector would read as:
1=FLAM
0% LEL
2 = CO
0 ppm
3 = O2
21% VOL
Channel Number Gas Type
Reading Units
