Brother International RH-9820 Instruction Manual - English - Page 103

Adjusting the cloth opening amounts, STANDARD ADJUSTMENTS

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9. STANDARD ADJUSTMENTS 9-21. Adjusting the cloth opening amounts Adjust so that the opening amounts for the left and right work clamp plates (1) are equal. * The cloth opening amounts should always be 0.8 mm or more on each side. 0515B 1. Press the TEST key (2) to turn on test mode, and then start test operation. (Refer to "5-4. Checking the sewing pattern in test mode".) (When using a 2-pedal foot switch) 2. Depress the start switch (3). * Check that the feed base moves and that the work clamp plates (1) at left and right both open. This opening amount is . 0516B Cloth opening amount = - 0517B 3. Use calipers to measure (at both left and right). 4. Turn off the power for the sewing machine. * The gap will become wider. This opening amount is . 5. Lower the work clamps, and then use calipers to measure (at both left and right). (Cloth opening amount = - ) 6. Calculate the cloth opening amounts for both sides. 7. Carry out adjustment if the two cloth opening amounts are not the same, or if the cloth opening amount at either side is lower than 0.8 mm. (Refer to following page.) RH-9820 94

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9. STANDARD ADJUSTMENTS
RH-9820
94
9-21. Adjusting the cloth opening amounts
Adjust so that the opening amounts for the left and right work clamp plates (1) are equal.
*
The cloth opening amounts should always be 0.8 mm or more on each side.
<Opening amount measurement method>
1. Press the TEST key (2) to turn on test mode, and then
start test operation. (Refer to “5-4. Checking the sewing
pattern in test mode”.)
(When using a
2-pedal foot switch)
2. Depress the start switch (3).
*
Check that the feed base moves and that the work
clamp plates (1) at left and right both open. This
opening amount is <a>.
Cloth opening amount = <b> - <a>
3.
Use calipers to measure <a> (at both left and right).
4. Turn off the power for the sewing machine.
*
The gap <a> will become wider. This opening amount is <b>.
5.
Lower the work clamps, and then use calipers to measure <b> (at both left and right).
(Cloth opening amount = <b> - <a>)
6. Calculate the cloth opening amounts for both sides.
7.
Carry out adjustment if the two cloth opening amounts are not the same, or if the cloth opening amount at either side is lower
than 0.8 mm. (Refer to following page.)
0517B
0515B
0516B