PEGAS 200 T PULSE HF SERVISNÍ MANUÁL SERVICE MANUAL-1MG-119-1 PEGAS 200 T
PULSE HF SERVICE MANUAL
page 7
ALFA IN a. s. © 2010
SERVISNÍ TECHNICKÁ DOKUMENTACE
The arc force adjusted
too small
Increase the arc force
10 Arc
blow
Airflow disturbance
Use the shelter from airflow
The electrode
eccentricity
Adjust the electrode angle
Change the electrode
Magnetic effect
Incline the electrode to the opposite
way of the magnetic blow
Change the position of earth clamp
or add earth cable in the two side
of workpiece
Use the short arc operation
11
The alarm light is on
Over heat
protection
Over
welding
current
Induce the welding current output
Working
time too
long
Induce the duty cycle (interval
work)
Over current
protection
Unusual
current
in the
main
circuit
Test and repair the main circuit and
drive PCB Power P200T compl.
5.
KONTROLA SILOVÉ PCB
CHECKING THE POWER PCB
Nástroj: standardní multimetr nastavený do
pozice “kontrola diod“.
Tool: standard multimeter set to the
position “Diode“
Všechny komponenty prom
ěř
te nejd
ř
íve podle
ř
ádku 1 tabulky a po té podle
ř
ádku 2.
Measure all the components firstly
according line 1 and then according line 2
of the table.
5.1 M
ěř
ení tranzistor
ů
T1, T2, T4 ,T5
Checking the transistors T1, T2, T4, T5
Line
Č
ervený hrot/Red tester
Č
erný hrot/Black
tester
Hodnota/Value
1
G
E
0,20-0,25
2
E
G
0,20-0,25
Pokud je jakákoli nam
ěř
ená hodnota mimo
uvedený rozsah, je pot
ř
eba vym
ě
nit vždy celý
pár tranzistor
ů
(T1-T2 nebo T4-T5).
1. Sou
č
ástku odletujte z PCB,
2. odšroubujte z chladi
č
e,
3. odstra
ň
te cín odsátím z otvor
ů
PCB
4. o
č
ist
ě
te chladi
č
od teplovodné pasty
lihem,
It is always necessary to exchange a
complete couple of transistors (T1-T2 or T4-
T5) if any measured value is out of the
range.
1. Unsolder the component from
the PCB,
2. unscrew that from the heat sink,
3. suck away the tin from the holes in
