Randall UNION Lockstitch, Инструкция по эксплуатации

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R
andall
UnIOn
l
Ock
-S
tItch
Thread Guide
Since 1858 Since 1858
www.Campbell-randall.com 11
threAD-GUIDe (UL-165) ADJUStMeNt
Setting the thread-Guide:
•
Set the guide so it delivers thread well into the needle
throat (hook) of the needle.
•
The guide should clear the needle by approximately
1/16” (1.5mm) as it circles to the left of the needle and
slightly to the back.
•
When the take-up is at its highest postion, just before
looper begins to move forward, the guide should be
about 1/64” in front of the looper.
•
Adjust the thread guide forward and backward with
screw Ul-173.
•
Always check thread guide (Ul-165) for sharp spots
that could break or strand the thread. pass the thread
back and forth through the hole of thread guide to make
sure that this area is smooth.
LooPer feeD CAM
• With the shaft standing upright, the flat area should be to
your left, cam (Ul-181/ Ul-161). The screw in the cam
should be all the way up. The looper can be made to delay
the thread, by loosing the screw in the take-up cam and
moving the screw to the top. The looper should hold the
thread until it has descended into the material. If not, the
thread would fall off the needle at its’ highest peak.
S
eTTINg
UL-180 L
OOPeR
:
•
The thread arm looper (Ul-180) should be set so it will
cast off the thread as the needle draws the thread loop
into the surface of the work.
•
At the furthest point of its back swing (toward the
operator), the notched edge of the looper should be
approximately 3/16” behind the awl and approximately
3/16” below the thread guide. on the forward swing,
the looper should just clear the side of the presser foot.
The thread looper needs to move close to the needle
on the left side without touching.
•
Test the looper for any play side to side. Side play can
be taken out by loosening Ul-188 bushing screw, than
tap end of stud and re-tighten the screw. replace if
worn.
•
keep looper free from sharp edges that can strand
the thread. If the looper is out of adjustment, it can rub
against the thread guide creating sharp edges. If there
are rough spots, use emery cloth or cord to smooth.