21
Selection of thread
3-1-3
1. Selection of upper thread.
<Description>
Please select considering cloth, design of pattern and flavour etc.
<Thickness>
Please refer to [Relation between needle and upper thread 3-1-4].
<Twist>
Z twisted thread is to be used.
(As rotary hook turns left- wise, Z twisted thread can prevent loosening of twist)
Z-twisted S-twisted
(Left - twisted) (Right - twisted)
2. Selection of lower thread.
Basically please use cotton thread (#80-120), #120 is recommendable.
Pay attention to the following in selection.
# Thickness should be equal.
# When it is lightly stretched. it doesn't break easily.
# In process of time, it doesn't get inferior.
Commercially available paper bobbin can be used, but please select thread with
thickness corresponding to cotton thread (#80-120).
When you prefer to use paper bobbin, please remove spring which is located inside the bobbin case.
Summary of Contents for HCH-701-30
Page 1: ...Maintenance Manual for Embroidery Machine HCH 701 30 Version 2 4 HappyJapan Inc ...
Page 132: ...128 Electrical connection diagram 5 ...
Page 133: ...129 Electrical connection diagrams 5 ...
Page 134: ...130 List of electrical connection diagrams 5 ...
Page 137: ...130c HCD81222 LCD CE MX 基板組 ...
Page 138: ...130d HCD8116 TP switch board ass y 3 82 7 32 7 387487 2487 ...