29
Version 0.1
Operating manual
3
INTENDED USE
3.1
Operational limitations
All SC shall be connected according to connection diagram and table of connec-
tions issued for this order.
All SC shall be grounded.
3.2
Usage preparations
3.2.1
Safety features
Before using the System, provide the following steps:
– train the staff to operate the System, test and control the equipment, and famil-
iarize with occupational safety required for the operation;
– familiarize the staff with all grounding points; check grounding;
– use only standard fuses (PSU);
– de-energize all devices before disconnecting cables, replacing fuses, units and
modules;
– the installer shall follow «The technical rules for operation of electric installa-
tion» and «Safety rules for operation of electric installation» while testing electrical cir-
cuits and insulation resistance.
3.2.2
Visual check procedure
Before switching the SC on, the installer shall:
– observe visually the cable integrity and initial position of the controls on the SC
front panels (for сommutator telephones – all toggle switches shall be put in down posi-
tion);
– clean the SC from dust and dirt by clean soft cloth, if necessary;
– check fail-safe cable connections to the SC and their proper grounding.
3.2.3
Instructions on SC switching on
Provide these steps, only if the System has a connection to external power supply.
Power supply to the SC:
a)
switch on power of all PSUs;
b)
check «Power» LED operation on all telephones and сommutator telephones;
Note – According to the project, only part of telephones and сommutator tele-
phones (not all) may be connected; other users will have no LED light indication.
c)
adjust backlight of controls on all telephones and сommutator telephones (if
necessary) using dimming button.
