Brother BE-438F - Manual (Page 28)

3. INSTALLATION ፧
19 KE-430F, BE-438F
3-10. Connecting the ground wire
CAUTION
Be sure to connect the ground. If the ground connection is not secure, you run the risk of receiving a serious electric
shock, and problems with correct operation may also occur.
(1) Ground wire from the machine head (Ground mark position)
* The recommended tightening torque for the ground screws is 1.0±0.1 N ጟm.
NOTE:
Make sure that the ground connections are secure in order to ensure safety.
2292B