Copyright © 2003 Controlled Environments Limited. All rights reserved.
Safety for you and the equipment
Your safety
Warning – High voltage hazard:
Some procedures in this manual involve working inside a live control
panel. Do
NOT
attempt them unless you have appropriate knowledge
and experience. Proceed only with appropriate safety precautions.
Equipment safety
Electrostatic
discharge (ESD)
cautions
Electrostatic hazard:
Many electronic components in the control system can be damaged or
destroyed by electrostatic discharges (ESD) that you cannot even feel.
You can discharge 5000 volts without feeling it but this voltage is
strong enough to destroy many electronic components of the system.
If you handle system components, you MUST wear a grounded
wrist strap.
The best ground is to the triac heat sink.
In addition:
!
Do not let anyone that is not wearing a grounded wrist strap work
on the control panel.
!
Do not touch any parts or conductors on the board even when you
are wearing a grounded wrist strap.
!
Do not lay paper on static-sensitive parts.
!
Ship components to Conviron in anti-static bags.
!
Make sure everyone that may work on the control panel is aware
of these procedures.
Failure to follow proper ESD precautions may void the warranty!
Battery expiry /
Memory-loss
cautions
Memory-loss hazard:
A continuous supply of electricity to the controller is essential to
preserve its memory. If its memory is lost, the controller cannot
operate and will have to be replaced.
An external battery provides backup for the regular supply of electricity
for brief periods when the regular supply is not available.
The battery must be replaced (see
Chapter 7: Maintenance and
Troubleshooting
) at intervals
NOT
exceeding 5 years.
To promote battery life:
•
Keep the controller disconnect switch
ON
(use only the start/stop
switch to turn power for the chamber on and off).
•
Keep ambient temperatures within the range of human comfort.
Operation warning:
Always wait at least three (3) minutes after completing any
procedure
before turning off the controller.
Wait at least 10 seconds before turning the controller on again.
