Installation
180/293 Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • 802-9081.9
Mechanical function test ➭ Switch the three-position switch and the circuit-breaker several times to CLOSED and OPEN
position, observing the correct indication of the associated position indicators.
➭ Check mechanical interlocks and covers for easy operation.
Readjusting the
freewheel of the
pushbuttons
After the mechanical function test, the freewheel of the OPEN and CLOSE pushbuttons of the
circuit-breaker can be readjusted. The factory-set freewheel is approx. 5...7 mm.
➭ Measure the freewheel of the two pushbuttons (e.g. by means of a tape measure or vernier
caliper).
➭ Remove the front cover of the circuit-breaker panel.
➭ Measure the distance from the knurled bolt to the plastic nut.
➭ Hold the housing of the pushbutton at the front.
➭ To adjust the freewheel to the requested dimension, turn the knurled bolt
(recommendation: for turning the bolt more easily, wear a glove).
➭ Refit the front cover.
➭ Test fuse tripping with test fuse.
➭ Check HV HRC fuse-links.
CAUTION
High speed moving parts
Using an incorrect hand crank can cause injury.
➭ Use exclusively the hand crank provided with the switchgear accessories.
The hand crank supplied features a freewheel function. The freewheel function
disconnects an inserted hand crank from the charging system when the motor charges the
closing spring.
①
Freewheel (approx.
7...5 mm)
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