To test the friction clutch, the slip force test unit must be available. Be sure to observe the product manual of the slip force test unit.

   Hang the slip force test unit in the chain about 20 cm beneath the chain hoist.

   Lift at a slow lifting speed until the slip force test unit is run under the chain hoist and the friction clutch responds.

   Read off the measured value on the slip force test unit.

   If the displayed value deviates from the range of 1.3 to 1.4 times the maximum load capacity: Adjust the friction clutch; see page 73.

   Hook up a test load with the maximum load capacity of the chain hoist and raise it.