Power Source Problems - FCW DYNA POWER 503CV Operating Manual

7.04 Power Supply Problems
Fault
1. Input power
voltage is ON. Indicator
light is not lit and welding
arc can not
established.
2. Input power indicator
light is not lit and welding
arc can not
established.
3. Input power supply is ON
and indicator light is lit
but when the gun trigger
switch is depressed
nothing happens.
4. Input power
voltage is ON, no wire
feed but gas flows from
the MIG gun when the
gun trigger switch
depressed.
5. Wire feeds when the gun
trigger switch
depressed but arc can
not be established.
6. Wire continues to feed
when the gun trigger
switch is released.
7. Jerky wire feed.
8. No gas flow.
9. Gas flow continues after
the gun trigger switch
has been released.
DYNA POWER 350CV、503CV、500CV、630CV、630HCV Operating Manual
supply
A Primary fuse is blown.
B Broken connection in primary
be circuit.
Indicator light is open circuit.
be
Gun trigger switch leads are
disconnected.
supply
A Electrode wire stuck in conduit
liner or contact up (burn-back
jam).
B Faulty control PCB.
is
is
Poor or no work lead connection.
The mode selector switch has
been set to 4T (latch operation).
A Worn or dirty contact tip.
B Worn feed roll.
C Excessive back tension from
wire reel hub.
D Worn, kinked or dirty conduit
liner.
A Gas hose is cut.
B Gas passage
impurities.
C Gas regulator turned off.
Gas valve has jammed open due
to impurities in the gas or gas line.
Cause
contains
Table 10
- 23 -
Remedy
A Replace Primary fuse.
B Have an accredited FCW service
agent check primary circuit.
Have an accredited FCW service agent
replace indicator light.
Reconnect.
A Check for clogged/ kinked MIG gun
conduit or worn contact tip, replace
faulty components.
B Have an accredited FCW service
agent investigate the faulty.
Clean work clamp area and ensure good
electrical contact.
Set the mode selector switch to 2T
(normal operation).
A Replace.
B Replace.
C Reduce brake tension on spool hub.
D Clean or replace conduit liner.
A Replace or repair.
B Disconnect gas hose from the rear
of DYNA MIG series or then raise
gas pressure and blow out the
impurities.
C Turn on the gas regulator.
Have an accredited FCW service agent
repair or replace gas valve.