33
Version 0.1
Operating manual
Table 8 – Checklist № 1. Visual check of the SC
To be done
Routine
Man-hours per
1 SC
Visually examine
the SC
1) check appearance of the SC; mechanical damage,
paint defects must be absent; marking plates shall be
present; legends are to be read easily;
2) clean up the SC surfaces with clean cloth;
3) remove severe contamination, parts of corrosion,
oil spots:
– from front surfaces – using soap foam preventing it
against penetration inside the SC, then all surfaces
clean dry by clean cloth and dry up;
– from other surfaces – using alcohol soaked cloth;
4) if varnish paint coating is damaged, polish it with sand
paper, then clean with alcohol-soaked cloth, cover with
varnish АК-113 and dry up
1 person
5 mins
Check reliability of
cable and bus con-
nection to the SC
1) check that connectors and attaching screws are fas-
tened tight; provide further fastening if needed;
2) check the cable integrity (mechanical damage
shall be absent)
1 person
5 mins
Table 9 – CL № 2. SC operability check
Fault
To do
Man-hours per
1 SC
Check operation of
telephones and сom-
mutator telephones
1) check operation of Power LED and controls back-
light (if checked telephone (сommutator telephone)
is connected to power supply); adjust backlight if
necessary;
2) check inductor operation – rotate it and make sure
that LED «Inductor on» is glowing
1 person
5 minutes per
1 SC
Table 10 – CL № 3. LS and BTC modes check
To do
Works
Man-hours per
1 SC
Check SC operation
and communication
1) perform test calls from each telephone and сom-
mutator telephone according to the list of users:
a) once a connection is set, check operation of se-
lected user line LED (only сommutator telephones);
b) initiate a call, check actuation of outgoing call sig-
naling (intermittent sound signal and «Call» LED);
c) initiate a call using inductor, check operation of
LIO;
d) initiate a call, check actuation of incoming call
signaling on the called telephone (сommutator tele-
phone) – local (call sound signal and Call LED) and
external (external signaling units)
2 persons
1 hour
