Lincoln Electric IM558 Synergic 7 and 7H Water Cooled - Manual (Page 25)

B-7 OPERATION B-7
SYNERGIC 7 & 7H
Idle Roll Pressure Setting
The idle roll pressure is set at the factory, backed out
three turns from full pressure on 4-roll feeders. This is
an approximate setting. For small wire sizes and
aluminum wire up to 9 or 10 turns out may be required
to minimize “birdnesting”. The optimum idle roll pres-
sure varies with type of wire, surface condition, lubri-
cation, and hardness. The optimum idle roll setting
can be determined as follows:
1) Release the incoming idle roll pressure arm, then
press end of gun against a solid object that is elec-
trically isolated from the welder output and press
the gun trigger for several seconds.
2) If the wire “birdnests”, jams, or breaks at the drive
roll, the idle roll pressure is too great. Back the
pressure setting out 1/2 turn, run new wire through
gun, and repeat above steps.
3) If the only result is drive roll slippage, disengage
the gun locking nut, and pull the gun cable forward
about 6” (150mm). There should be a slight wavi-
ness in the exposed wire. If there is no waviness,
the pressure is too low. Increase the pressure set-
ting 1/4 turn, reconnect the gun, tighten the locking
nut, and repeat the above steps.
4) After the outgoing pressure is set, determine how
many turns away from full pressure the setting is.
Set both idle roll tensions to this setting. Engage
both idle rolls before welding. In most applications,
best wire feeding will occur when both idle roll
pressures are set the same.
Gas Guard Regulator Setting
1) With the gas supply shut off, the Gas Guard regu-
lator flow adjusting key should be set to maximum
(full clockwise) which is rated to be 60 SCFH (28
lts/ min).
2) Adjust gas supply flow rate for a level higher than
will be required, then adjust Gas Guard flow
adjusting key counterclockwise to the desired gas
flow rate.
Wire Loading of 13-14lb (6kg) Innershield
Coils
The K378 small mounting stand for the 14 pound (6
Kg) Innershield coil does not have an adjustable
brake. It has a fixed drag built into the reel spindle.
To load a 14 pound coil:
1) Remove the snap-on lid from the plastic canister.
2) Remove the center clamping nut and the cover
plate from the wire reel.
3) Unpack the 14 lb. (6 kg) coil of wire. Be sure not
to bend the side tangs of the coil liner and straight-
en any tangs that may have been bent.
4) Remove the start end of the coil from its holding
slot in the coil liner, cut off the bent end, straighten
the first six inches, and cut off the first inch.
Thread it through the canister wire feed liner until
about four inches of electrode are exposed.
5) Place the coil onto the disc support.
6) Replace the front reel cover and center clamping
nut, keep the reel from turning and tighten the
clamping nut securely.
7) Thread the exposed end of the electrode into the
wire feeder until it touches the drive rolls. Press
the Cold Inch key or the gun trigger and feed the
electrode through the system.
NOTE: If the electrode is not properly straightened, it
may not feed or may not go into the outgoing
tube causing a "birdnest".
When feeding with the gun trigger, the electrode and
drive mechanism are always “HOT” to work and
ground and could remain “HOT” several seconds after
the gun trigger is released.
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WARNING