36
4.5.4
Assembly of the trolley with one connecting bolts
One trolley connecting bolt is to be fixed to the lateral boards so as to allow a clearance of one to two
millimetres between the running wheel flange and the girder flange.
The width is adjusted by inserting spacing washers
symmetrically
. Tighten the nuts of the connecting
bolts with a torque wrench. Take care, that the spacing bushes shall not be braced! The relevant
tightening torques are listed in Table 7.
4.6
Electric trolleys with counterweight
If electric trolleys, especially with double speed, are used on girders with a very small width it may be necessary to
provide a counterweight which prevents tipping up of the trolley. This unit can be retrofitted to each trolley. This kit
does not influence any features of a standard trolley.
Figure 36: Counterweight for electric trolleys
4.7
Electric connection of electric trolleys
Direct control
An electric cable clearly labelled which is approximately 0.5 m long is located on the travel motor of the electric trolley
for connecting to the electric chain hoist. The terminals are situated in the electric chain hoist casing. Connection
should be carried out as shown in wiring diagram.
The control pendant has push buttons for controlling the travel motion. The motorized trolley for fast and low travelling
speed has push buttons with two-step switches.
Low voltage control
The contactors for switching the trolley motor are located in a contactor box. The contactor box must be assembled
with two hexagon socket head cap screws M8x10 DIN 933 on the side-plate. Connect the two leads protruding from
the contactor box to the terminal section of the electric chain hoist and to the trolley motor as shown in the wiring
diagram. After electric connecting, check that the electric chain hoist and the trolley are working correctly.
5
Initial operation
5.1
Initial operation according to DGUV V54 (BGV D8)
The initial operation in accordance with the EC Machine Directive means the first use of the electric chain hoist by the
operator. It can only be executed, when the electric chain hoist complies with the demands of the relevant EC-rules
and it is proved and documented by the Declaration of Conformity and the CE-label.
5.2
Initial operation according to DGUV V17 (BGV C1)
The test before first initial operation has to be done by an authorised person in accordance with §33,
DGUV V17 (BGV C1) and should be arranged by the owner.
Before first initial operation the owner of such facilities and all operating personnel have to familiarize
with the legal regulations according to chapter 1.1 and specific rules of stage and studio technologies in
particular:
•
DIN 56950-1:2012
Entertainment technology - Machinery installations
–
Part 1: Safety requirements and inspections
•
DGUV V17 (BGV C1) Accident-Prevention Regulation
Staging and production facilities for the entertainment industry
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