Checking Consumable; Parts Replacement; Precautions In Performing Withstand Voltage Test And Insulation Resistance Measurement - Panasonic YD-400VP1YHD Operating Instructions Manual

9.3.6 Checking consumable

• Relay on the P.C. Board switches on/off the
circuit using contact, which has certain
electrical and mechanical service life. Cooling
fan and electrolytic capacitor also have service
life.
• Service life using under rated specification for
cooling fan is about 60 000 hours, and for elec-
trolytic capacitor is about 20 000 hours. Such
service lives vary with usage. Handle them as
consumable parts in inspection work.
To secure safe use of the product, it is recom-
mended to replace them with new ones based
on the above mentioned service life.

9.3.7 Parts replacement

• For safety purpose, please contact Panasonic
representatives in case of replacing parts inside
the welding power source.
• As replacement parts, make sure to use our
genuine parts for Panasonic welding machines
to keep its performance and functions.
9.3.8 Precautions in performing with-
stand voltage test and insulation
resistance measurement
This product uses semiconductor components,
such as transistor. Executing withstand voltage
test or insulation resistance measurement casu-
ally may cause serious physical injury or mechani-
cal failure. If necessary, contact Panasonic
representatives.
WMD078TE0PAA07
● Attention to Panasonic representatives
(About withstand voltage test and insulation
resistance measurement)
Prior to conducting withstand voltage test and
insulation resistance test, prepare the following
items and also connect ground wire (cross sec-
2
tion: about 1.25 mm ).
Area
Input Draw out the input power cable
power from the power box, and short
cable the connecting terminals of the
cable.
Output Disconnect the cables
terminal of connected to the output
welding terminal except one for welding
power main circuit, and then short-
source circuit the output terminals with
conductor cable.
Connecting Disconnect all connecting cables
connector and signal wires for external
devices from jig terminal,
welding torch, wire feeder
connector, communication
connector and so on.
Ground Disconnect all ground wires
wire for inside of the case connected to
case the case.
Main circuit Short-circuit between the
emitter and collector of the
main transistor IGBT, and
between anode and cathode of
the secondary diode with
conductor cable.
Control Disconnect all connectors
circuit connected to the P.C. Board.
Note
After completion of the test(s) and prior to re-
installing the case or cover, do the following
without fail.
• Remove all conductor cables for short-circuit.
• Reconnect all cables, connectors and ground
wires that have been disconnected before the
tests to the original condition.
• Make sure to conduct the above. If the power
has been turned on without removing the
conductor cables for the test, the equipment
may be burnt.
9. Maintenance
Operation
131