Troubleshooting M14-13655-EN
7-6
Problem:
Continually blowing fuses:
Possible Solutions:
• Check that you are using the correct size fuse: a 6 1/4 AMP slo-blow fuse (100-120V
power) for the hoist motor (3 AMP fuse for 240V power).
• If fuses only blow when the weights are raised to the top, Contact Instron Dynatup.
• If fuses blow when pulling the tup out of specimens, tup may be penetrating material
that is too thick or too ductile for the motor to pull the tup free. Contact Instron
Dynatup.
Figure 7-2. Hoist Hub and Pinch Roller Assembly