TROLLEY
OPERATION & MAINTENANCE
21
P/N: 11854801 REV. AC
September 2017
This manual contains important information to help you install,
operate, maintain and service your new top running trolley. We
recommend that you study its contents thoroughly before putting the
trolley into use. With proper installation, application of correct
operating procedures, and practicing the recommended
maintenance suggestions you will be assured of the maximum
service from your trolley.
The trolley described in this manual are intended for indoor
service. Trolleys to be used for outdoor service require special
considerations.
IMPORTANT:
When ordering replacement parts be sure to include
Catalog, Part and Serial Numbers of the endtrucks and or drive
gearmotor along with individual part numbers of components
needed as identified elsewhere in this manual.
Information given in this manual is subject to change without notice.
GENERAL DESCRIPTION
GENERAL
These top running trolleys are designed to operate on parallel crane
runway beams with ASCE Rail from 25# to 105# rail or square
bar. Specific rail range is wheel diameter dependant. Motors are
designed for operation on three phase power supplies from 190 to
415 V-50 Hz and 200 to 575 V-60 Hz. Trolley motors and brakes
are designed and intended strictly for variable frequency control
operated by pushbutton pendant or radio control. Pendant may be
located and suspended from an independent festoon or attached
directly to the hoist and trolley.
Basic Construction
Trolleys have a drive and trailer wheel on each side which run on
the runway rails. The wheels are double flanged, flat tread with an
integral rotating axle supported by anti-friction bearings. The trolley
is driven by a helical gearmotor and brake. This drive engages the
drive wheel by a splined connection.
INSTALLING TROLLEY
The installation of the crane on the runway shall be performed only
by a qualified crane installer.
For information regarding attaching, lifting and moving the loads
during installation, refer to ANSI B30.2-latest edition, Chapter 2-3
Overhead and Gantry Cranes (Single or Multiple Girder, Top Running
Trolley Hoist; other applicable codes.
BEFORE INSTALLING THE CRANE ON THE RUNWAY, LOCK
THE RUNWAY CONDUCTOR DISCONNECT SWITCH IN THE
OPEN (OFF) POSITION.
Prior to the start of any crane erection the building should be measured
to confirm span and clearances. These measurements should be
checked against the corresponding crane measurements to insure
correctness of “fit”. After assuring that the crane fits the building,
determine orientation of crane position with respect to the runway. In
addition, verify building and runway power supply to ensure it matches
the power requirements of the crane.
These types of cranes are usually lifted into position on the runway in
one piece. Total weight of this crane should be checked against lifting
equipment selected for erection of this crane.
Immediately after the crane is placed on the runway rails check the
wheel flange clearances to the rail. Clearance between the side of rail
head and inside flange of wheel should be between a total of 3/4” and
1-1/8”, depending on the wheel and rail combination and whether or
not the truck is centered on the rail. Total wheel float should not be less
than the 3/4" as recommended by CMAA Specifications #70 and #74.
Before attempting any electrical connections the main power
switch feeding the runway conductors must be LOCKED IN
THE OPEN (OFF) POSITION.
NOTICE
A FUSED DISCONNECT SWITCH OR CIRCUIT BREAKER
MUST BE INSTALLED AND ELECTRICALLY POSITIONED
BETWEEN BUILDING POWER SUPPLY AND CRANE RUNWAY
CONDUCTOR SYSTEM. THIS DISCONNECT MUST BE
LOCKABLE IN THE OPEN POSITION, IN-SIGHT AND IN-REACH
FOR THE CRANE OPERATOR, AND CLEARLY LABELED. A
SECOND LOCKABLE DISCONNECT IS REQUIRED ON THE
BRIDGE CRANE, ELECTRICALLY POSITIONED BETWEEN THE
RUNWAY CONDUCTOR SYSTEM AND BRIDGE CONTROLS.
REFER TO ARTICLE 610 OF NFPA NO. 70 NATIONAL ELECTRIC
CODE, OSHA REGULATION 1910.179, ANSI/ASME B30.2 AND
B30.17, LOCAL, STATE AND PROVINCIAL STANDARDS AND
REGULATIONS FOR SPECIFIC REQUIREMENTS.
IN ACCORDANCE WITH ARTICLE 610 OF NFPA
NO. 70 NATIONAL ELECTRIC CODE A SEPARATE
BONDING CONDUCTOR MUST BE RUN FOR GROUND.
GROUNDING THROUGH THE WHEELS TO GIRDERS AND
RUNWAY STEEL IS NOT PERMITTED.
GEARMOTORS PROVIDED WITH THIS TROLLEY ARE
INTENDED FOR VARIABLE FREQUENCY CONTROL ONLY.
THE BRAKE USED ON THE GEARMOTOR IS A HOLDING
BRAKE WITH NO PROVISION FOR TORQUE ADJUSTMENT.
SEVERE LOAD SWING WILL RESULT WITHOUT THE
CONTROLLED DECELERATION WHEN STOPPING PROVIDED
BY THE VARIABLE FREQUENCY CONTROL. THE USE OF
CONTACTOR, ACROSS THE LINE STARTING, CONTROLS
IS NOT PERMITTED, WILL RESULT IN DAMAGE AND
PREMATURE FAILURE OF THESE UNITS AND VOID ANY
WARRANTY.
NOTICE
PRIOR TO PLACING THE CRANE INTO SERVICE, THE CRANE
SHALL RECEIVE AN INITIAL INSPECTION. THIS INSPECTION
SHOULD BE PERFORMED BY A QUALIFIED PERSON IN
ACCORDANCE WITH ANSI/ ASME B30.2 OR B30.17, LOCAL,
STATE AND PROVINCIAL STANDARDS AND REGULATIONS.
Содержание Lodeking LT Series
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