25
Medical Gas Central Alarm - Medipoint 125 Digital Alarm
4233500107.03
4.
Commissioning
Before starting the commissioning actions ensure
that all points from Installation section 2 and alarm
configuration section 3 have been completed.
Ensure all connected source equipment is operating in
normal conditions with no alarm faults present.
The object of commissioning is to ensure that all
components are serviceable and all alarm functions
operate satisfactorily. The commissioning procedure
also ensures that anti-confusion checks are carried
out and that the correct gas service is displayed in the
designated column.
WARNING! Personnel carrying out the
following commissioning procedure must be
qualified and fully conversant with the information
contained in this manual.
WARNING!
Before
commencing
the
commissioning procedure ensure that all installation
procedures are complete and that all wiring is
correctly connected. Before switching on the
mains electrical power supply, ensure the supply is
correctly fused.
4.1
Alarm panel test
With the main screen displayed check that all gas
services match the installation specification. See figure
35 for typical 6 gas unit with no faults.
Figure 35 - Example, 6 gas normal conditions.
Press the TEST switch and check all gas service indicator
bars flash at the same rate, the audible warning sounds
and the system fault LED flashes.
Figure 36 shows examples of all status flashing.
See table 6 in section 5 “Operation of the Medipoint 125
Digital alarm” for troubleshooting.
Figure 36 - Alarm Test Button, example 6 gas.
4.2
Checking the slave relay output
If the slave relay is to be used in the installation,
operation of the relay can be checked by ensuring that
continuity exists between the relay terminals (N/O and
C) when all NORMAL indications are illuminated. Check
that continuity between the relay contacts is broken,
whenever an alarm condition occurs during tests in
section
4.5 to 4.7
.
Note...
• If the relay output is set to LCM, normal condition
will be 180 Ohms and fault will be 510 Ohms.
• If the relay output is set to N/C - N/O, normal
condition will be closed and fault will be open
contact.
4.3
Checking the remote audible
warning devices.
Whilst carrying out checks described in section 4.5 to
4.7, the opportunity should be taken to ensure that the
remote audible warning operates whenever there is an
alarm condition on it’s parent panel.
CAUTION! The TEST and MUTE switches must
only be operated by gentle finger pressure. Operation
by the use of instruments, tools or other implements will
cause damage to the switch and fascia.
4.4
Medical gas alarm faults.
The procedure to check the alarm fault functions is
as follows, and should be check on all alarm panels
connected to the system:-
4.4.1 Alarm panel. Check NORMAL display.
Ensure all connected source equipment is in normal
operation with no faults present. The alarm should
display all columns as green normal, power on LED
illuminated , system fault LED off and no audible
