JUKI LH-4128-7 Engineer's Manual page 33

Adjustment Procedure
6) Replenishing grease to the specified places (for LH-4168-7 , LH-
4188-7 only)
1. After the sewing count (stitch count) exceeds a certain number, the
error code, No. E220, is displayed on the control box (also displayed
on the IP panel when IP-100 is used) at power-on and a warning beep
sounds 5 times intermittently. This phenomenon indicates that it is
time to replenish grease to the specified points.
to replenish grease as described below, call the memory switch,
No. 118, set the value to "1", and turn off the power.
2. The machine is usable even after the error, No. E220, is displayed, but
every time the power is turned on, the error, No. E220, is displayed
and a warning beep sounds. Press the reset key to cancel the error
when the IP panel is used.
3. In case that you use the machine after the error, No. E220, is dis-
played without grease replenishment to the specified points for a cer-
tain period, the error, No. E221, is displayed and the machine will not
operate. The error cannot be canceled even after pressing the reset
key when the IP panel is used. * In such a case, follow the operation
marked with in Step 1. described above.
(Caution) 1. After replenishing grease, call memory switch No.118,
set the description to "1", and turn OFF the power.
Otherwise, error No.E220 or error No.E221 is displayed
again.
2. For replenishing grease to the specified places below,
use JUKI GREASE A TUBE (Part No. 40006323) or JUKI
GREASE B TUBE (Part No. 40013640), supplied as ac-
cessories. If grease other than the specified one is
used, breakage of components will be caused.
1. Replenishing grease to the needle bar drive cam section
1) Remove the top face cover, and remove the rubber caps attached to
the nipples .
2) Fill joint supplied as accessories with JUKI grease A from the grease
tube.
3) Connect pipe with nipples
ries to joint , and replenish the joint with JUKI grease A.
(Caution) Replenish the joint with grease by repeating JUKI grease
A filling of step 2) when the first replenishing is not
enough.
4) Fit the rubber caps to the nipples
confirm that the rubber caps do not interfere with other components.
Therefore, be sure
, turn screw supplied as accesso-
, turn the main shaft by hand, and
– 29 –
Results of Improper Adjustment
o If the main shaft is rotated with
any rubber cap left dislodged,
this rubber cap may be torn off.
Turn the main shaft after attach-
ing the rubber cap to the nipple
, without fail.