ZP3-ECU Maintenance Manual Doc. No. 503-0800ZE-M-01
Issue 1 (01/08/2006) Page 7
Arming the System after Completion of Quarterly Maintenance
After successfully completing the maintenance check do the following:
• Submit a report of the findings to the system owner or his delegated representative.
• Restore the system to normal and reset.
• Lock the system off while restoring the actuator.
• Remove the transit pin from the extinguisher cylinder (if applicable).
Fault Finding - Communication ECU to Control Panel
General Information
When tracing and correcting faults, observe the following guidelines and precautions:
• Before starting any fault finding procedures, make sure that the system as a whole is
calibrated correctly. Check the high reference analogue (reading 1) from several devices
covering the length of the line. The reference value should be between 205 and 218.
• If there appears to be a problem, disconnect the line and connect a single sensor to the
panel. Check that the reading is within the above parameters.
• When tracing a fault on a device or alarm line, the recommended procedure is to split the line
in half and check in which half the problem is located. Continue this procedure, dividing the
suspect region of the line in half until the exact location of the problem is identified.
Precautions
• Never use a megger, or any other high voltage instrument, on detection or alarm lines while
there are any devices connected to them. This causes irreparable damage to the devices.
• Never replace a panel PCB, or any other components while the power is connected. This
could damage them irreversibly.
• Never replace a fuse with one that has a higher amperage rating than that which is specified.
• Whenever replacing line devices make sure that the address settings on the replacement
units match those of the units they are replacing.
The fault list describes faults that can be raised by the control panel. The following information is
given for each fault:
• Fault name
• Fault description
• Panel indications
• Probable cause or causes
• Corrective action
Panels are configured to sound a fault buzzer when a fault is raised. The buzzer sounds
approximately every three (3) seconds. A yellow fault LED also illuminates. After acknowledging
the fault by accepting it, the buzzer sounds only every fifteen (15) seconds. After correcting the
fault, reset the panel, this returns the panel to normal and the fault LED goes out.
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