Hafco Metalmaster HM-32B, Instruction Manual, Page: 11 / 23

(a)Overload----Decrease the load of feed.
(b)Lower voltage----Adjust to accurate Voltage.
(c)Spoiled contact point of magnetic switch----Replace with new one.
(d)Breakdown of overload relay----Connect it or replace with new one.
(e)Motor is poor----Replace with new one.
(f)Break down of fuse or poor contact with wire(it is easily spoil motor while
short circuit)----Switch off power source at once and replacefuse with new one.
(g)The tension of pulley V-belt too tight----Adjust for proper tension of V-Belt.
(h)If this machine with the tapping attachment, there is an aid plum screw fix
on the motor mount in order to avoid the motor pulleys shake while turning.
(3)The temperature of spindle bearing is too hot
(a)Grease is insufficient----Fill the grease.
(b)The spindle bearing is too tight----Turning with no speed and feel the
tightness with hand.
(c) Turning with high speed for a long time----Turn it to lightly cutting.
(4)Lack of power with main spindle revolving
(a)The tension of V-belt too loose----Adjust for proper tension of V-belt.
(b)Motor has burned out----Change a new motor.
(c)Fusehas burned out----Replace with new one.
(5)Spindle turn has not balanced
(a)The gap of spindle bearing too wide----Adjust bolt in proper.
(b)Looseningof leaf bolt----Turn and fasten in place.
(c)Feed too deep----Decrease depth of feed.
(6)Shake of spindle and roughness of working surface has taken place
during performance.
(a)the gap of spindle bearing too wide----Adjust the gap in proper or re
place bearing with new one.
(b)Spindle loosening up and down----Make two of inner bearing covers on the
top tight each other.Do not overtighten two inner bearing covers with the taper