Lincoln Electric TANDEM IM666-A, Руководство оператора

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A-5
INSTALLATION
TANDEM MIG TORCH
A-5
b) Push the end connector from torch into K489-7
Fast-Mate adapter on the wire feeder, and then
tighten the locking nut. Do this for both of the torch
power cables.
c) Attach the water lines from the torch power cables
to a supply of cooling water.
d) Connect the water lines from the nozzle bundle to
the Tandem MIG interface. If a Tandem MIG
interface is not used, connect the water lines
directly to the water cooler or other type of con-
troller.
e) For G3494-X Series:
Connect the shielding gas line from the nozzle
bundle to the Tandem MIG interface. Alternatively,
connect the shielding gas line to the lead wire
feeder. Do not connect the shielding gas line to
trail wire feeder, because there would be no shield-
ing gas in the event of a delayed trail arc start .
For G3494-XA Series:
Shielding gas connection was completed in step b,
when torch cables were connected to Fast-Mate
connector. Check gas hose connection from wire
feeder solenoid to Fast-Mate connector for both
the lead and trail wire feeders.
f) Attach the air blast line to the high pressure dry air
supply (50-100 psi).
Water Cooling Equipment
FIGURE 3
WATER COOLING EQUIPMENT
(See Figure 3)
The Tandem MIG torch requires three separate water
coolers for proper cooling of the torch. The lead and
trail part of the torch each require a water cooler as
well as a third cooler for the nozzle. The three coolers
maintain proper temperatures in the torch even at
maximum rated output and duty cycle, leading to long
parts life and consistent welds. The separate coolers
eliminate the risk of any current leakage through the
water.
The water cooler for the nozzle should be pro-
grammed to turn on only during welding and remain
on for twenty seconds after the weld is complete.
Automatic control of the cooler minimizes the risk of
an operator removing the nozzle and getting sprayed
by the cooling fluid.
To maximize the life of the water coolers, the coolers
for the lead and the trail part of the torch should turn
on during welding and remain on for 60 seconds after
the weld is complete.
Water cooler manufacturers often specify additives
such as fungicides or alkalides. Follow manufacturers
recommendations to achieve proper operation and
long lifetimes without clogging.
K1536-1 Flow sensors should be placed in the return
line of each water circuit. Use a KP1529-1 connector
kit to attach the flow sensors as needed.