Lincoln Electric K1655-9-LFA 4.1 Operator's Manual page 38

FUME EXTRACTION ARMS
The extraction arms have been pre-balanced in the factory for
optimal balance and positioning. However, they sometimes need
adjustment. To check and adjust the balance system, proceed as
follows.
If the entire arm falls on its own:
FIGURE F.1
(See Figure F.1, items A and B)
A
• Tighten bolt (A) on the hinge fan side to increase spring tension.
Ensure spring does not turn as you tighten. Turn bolt on each
spring equal amounts. See Figure F.2. FIGURE F.2
A
If the hood section of the arm falls on its own:
(See Figure F.3, item B)
• Tighten bolt (A) in middle hinge to increase spring (B) tension.
Ensure spring does not turn as you tighten. See Figure F.3.
FIGURE F.3
A
Bring the extraction hood to a horizontal position. The hood should
B
If the extraction hood falls on its own:
• Pull back the arm band seal and flexible hose.
• Push the corrugated cover (Item A Figure F.5) back to expose
• Use a ½" wrench and ½" socket and ratchet to adjust the
B
• Replace the flexible hose and secure it with the arm band
If the extraction hood does not maintain a horizontal position
(left/right)
• Pull back the arm band seal and flexible hose.
• Turn bolt (See Figure F.6 Item B): in the hood hinge clockwise
• Replace the flexible hose and secure it with the arm band
1. Bring the arm (including extraction hood) to a horizontal
D-3
stay in this position. See Figure F.4. FIGURE F.4 - HOOD ADJUSTMENT
FIGURE F.5 - HOOD ADJUSTMENT
the wrist joint.
A
bolt/nut pairs as shown Turn bolt (See Figure F.6 Item A) in
the hood hinge clockwise to tighten extraction hood. FIGURE F.6 - HOOD ADJUSTMENT
A
B
13
seal.
to tighten horizontal movement.
seal.
position. The arm should maintain this position. See Figure
F.4.
MAINTENANCE