ESAB B Series Installation, Operation And Maintenance Manual page 83

SECTION 6
1. Unscrew the shield cup retainer. The cup may
come free with the retainer or stay on the torch. If
on the torch, pluck it free with your thumbnail.
Inspect the cup for damage around the orifice, if
the edge of the orifice is damaged, it must be
replaced. Straight cuts cannot be produced if this
orifice is distorted.
2. The shield cup insulator is sandwiched between
the insulator shield retainer and the nozzle re-
tainer/diffuser and may stay attached to nozzle
retainer because of the very close fit-up between
these members.
3. Unscrew the nozzle retainer/diffuser. Inspect for
any damage especially where the retainer con-
tacts the nozzle. The innerface between the
retainer and the nozzle creates a metal to metal
seal for the coolant. Any damage to this sealing
surface will cause a leak and poor cutting will
result. Replace as necessary, do not attempt to
repair. Check the small gas passages for block-
ages. Clear blockages with an air stream.
4. The nozzle is removed with the aid of the tool
provided. Place the slot around the groove in the
nozzle and pull the nozzle free.
5. Remove the swirl baffle from the nozzle. If the
baffle remains in the torch, it will come free with
the removal of the electrode. Check the small gas
CUP SHIELD SHIELD CUP
w/ RETAINER INSULATOR
22531 22010
INSULATOR SHIELD
RETAINER W/ O-RING
C-21712
NOZZLE RETAINER/
DIFFUSER - D-22007
For removing
and replacing
water baffler
ELECTRODE &
NOZZLE TOOL
C-21765
NOZZLE
"A" (15A) - 21540
"B" (30A) - 21541
"C" (50A) - 21542
"D" (70A) - 21543
"E" (100A) - 21923
Slot for Assemble
removing swirl ring
nozzle into nozzle
first
Figure 6-1. Front End Parts, PT-24 Torch
79
passages for blockage. Clear blockages with an
air stream, if blockages cannot be cleared, re-
place the baffle. Do NOT insert anything in these
holes in an effort to clear them. Distortion of these
holes will impair cutting performance.
6. Unscrew the electrode with the aid of the tool
provided.
B. Installation
1. Electrode - Apply a thin film of silicone grease to
the O-ring, just enough to produce a shiny sur-
face, thread the electrode in place and snug tight
with the tool provided. Do NOT overtighten.
2. Nozzle & Swirl Baffle - Place the swirl baffle into
the nozzle being careful not to get anything in the
small gas passages. Push this assembly into the
torch.
3. Nozzle Retainer/Diffuser - To prevent leakage
between the nozzle and nozzle retainer, moisten
the corner of a clean, dry, lint-free cloth with a very
small smount of Krytox® grease P/N 73585064.
Wipe the inner surface of the nozzle retainer that
comes in contact with the nozzle. Use care to
apply a very thin film to ensure a proper seal.
Thread the nozzle retainer onto torch and hand
tighten.
4. Shield Cup Insulator - Push the shield cup insula-
tor on the nozzle retainer.
5. Shield Cup and Retainer - Screw this assembly
onto the torch and hand tighten.
SWIRL BAFFLE
21852 (15A) - 2 HOLES
21536 (30A) - 3 HOLES
21692 (50/70/100A) - 4 HOLES
O-RING O-RING
98W18 638797
ELECTRODE WATER
(15/30/50/70A) BAFFLE
21539 C-21725
Hex for
installing
electrode
MAINTENANCE
O-RING
86W62
O-RING
950715
TORCH ASSEMBLY
D-21530