5
Startup
Helical/parallel-shaft helical/helical-bevel gear units
Assembly and Operating Instructions – Explosion-Proof Gear Units
99
The following figure shows a helical-worm gearmotor with projecting worm shaft:
15050784011
5.7
Helical/parallel-shaft helical/helical-bevel gear units
If the gear units were installed according to chapter "Mechanical installation" (→
no special startup notes must be observed for helical, parallel-shaft helical and helical-
bevel gear units.
5.8
Gear units with backstop
NOTICE
Operating the motor in the blocking direction could destroy the backstop.
Possible damage to property
•
Do not start up the motor in the blocking direction. Before motor startup, make
sure the current supply of the motor for the direction of rotation is connected ac-
cordingly.
•
For control purposes, operation in blocking direction with half the output torque is
permitted once.
The purpose of a backstop is to prevent unwanted directions of rotation. During opera-
tion, the backstop permits rotation only in the specified direction.
A
B
CCW
CW
CCW
CW
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The permitted direction of rotation is indicated by a direction arrow on the housing:
15985405835
A replacement label is enclosed for the customer.
24804134/EN – 05/2018