Maintenance
100
Maintenance
Preventive Maintenance
WARNING
HAZARDOUS VOLTAGES MAY EXIST IN
THE DRIVE CIRCUITS EVEN WITH DRIVE
CIRCUIT BREAKER IN OFF POSITION.
NEVER ATTEMPT PREVENTIVE
MAINTENANCE UNLESS INCOMING
THREE-PHASE AND CONTROL POWER
IS DISCONNECTED AND LOCKED OUT.
Preventive maintenance is primarily a matter
of routine inspection and cleaning. The
rectifier bridge heat sinks should be kept
clean by brushing while using a vacuum
cleaner. Excess dust and dirt accumulation
on the heat sinks can cause overheating of
the SCRs.
Periodically check all electrical connections;
tighten as required.
Periodically check air filters on enclosure
doors, if applicable; clean if dirty, replace as
necessary.
Periodically clean the cooling fans to prevent
dirt buildup. At the same time, check that
the impellers are free and not binding in the
housing. Each fan motor is permanently
lubricated; the fan should be replaced if the
shaft does not spin freely.
If/When drive faults occur, follow those aids
based on the observed Error/Fault code. In
some instances, the fault tracing required to
determine the necessary repairs is too
extensive to list in detail in this manual; for
those faults, it is recommended that
Magnetek be called for assistance.
Some of the probable causes in Table 13:
Fault Code Descriptions mention problems
at connectors, all of which are on the Drive
Control PCB. Table 14: Connector
Definitions describes the basic function of
each connector, and Figure 24: Connector
and E-prom Locations on the board.
Repair and Replacement Procedures
Replacement parts are listed in
Section 6
.
Either the common name or reference
designator of a particular part may be used
to locate the item in the Recommended
Spare Parts Table to find a replacement part
number. Be sure to use the proper table
corresponding to the ampere rating on the
drive nameplate.
Printed Circuit Boards
IMPORTANT
When replacing any printed circuit board
(PCB) or any integrated circuit (IC) in the
DSD drive, proper Electro-static Discharge
(ESD) procedure MUST be followed.
Repair of printed circuit boards requires
special techniques and test equipment.
For
this reason, field repair is not authorized,
and replacement of a suspect board is
recommended.
Defective or questionable printed circuit
boards should be returned to MagneTek, for
repair and test. The printed circuit board
should be ESD protected, then individually
protected with an inch thickness of soft
wrapping material before it is packed in a
suitable carton. MagneTek assumes no
responsibility for printed circuit boards
returned without proper return tags and
forms. Contact your Magnetek sales
representative for proper return tags and
forms.
Summary of Contents for DSD 412
Page 1: ...DSD 412 DC Elevator Drive Technical Manual CS00407 rev 06...
Page 6: ...6...
Page 102: ...MAINTENANCE 102 Figure 24 Connector and E prom Locations...
Page 103: ...MAINTENANCE 103 Figure 25 Test Point Locations...
Page 115: ...OUTLINE DRAWING 100A 115 Figure 26 Drive Chassis Outline DSD 412 100 Amp...
Page 116: ...OUTLINE DRAWING 190A 116 Figure 27 Drive Chassis Outline DSD 412 195 Amp...
Page 117: ...OUTLINE DRAWING 300A 117 Figure 28 Drive Chasis Outline DSD 412 300 Amp...
Page 118: ...LAYOUT DRAWING 100A 118 Figure 29 Layout DSD 412 100 Amp A3 A1 A2 A2 L1 NEG GND L2 L3 POS...
Page 119: ...LAYOUT DRAWING 195A 119 Figure 30 Layout DSD 412 195 Amp A3 A1 A2 A2...
Page 120: ...LAYOUT DRAWING 300A 120 Figure 31 Layout DSD 412 300 Amp A3 A1 A2 A2...
Page 121: ......
