Proteus ATEX Zone 1, Original User Instruction Manual

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Version A Mini-Cam Proteus ExZ1
Power Control
Steps for Powering ON
First follow the steps in section Preparing for the Inspection page 39, then:
Step 1
: Turn on the System Power
Step 2
: Decide if to use the OVERRIDE Key
Step 3
: Turn on the Inspection Equipment Power
Step 1: Turning on the System Power
Press the
PowerON
key.
When you first turn on the system using the PowerON key, the CCU will start
up but the power to the inspection equipment will remain OFF. You must tell the
CCU when to apply the power to the inspection equipment. Once the system has
started, you must read and accept any messages.
If the inspection requires ATEX, you must ensure that the inspection equipment
is in a NON-Hazardous Environment before you apply power to the inspection
equipment.
Step 2: Decide if to use OVERRIDE to Keep Power ON
For instructions on using of the OVERRIDE Lock see page 36.
The ATEX-1 monitoring system automatically removes inspection equipment power
if any equipment pressures are low. But this would make it impossible for the
ATEX-1 inspection equipment to report its pressures when you need to re-pressurise
it to the correct values. For this reason the OVERRIDE Key can be used to force
ATEX-1 inspection equipment power to remain ON even when pressures are low.