Quantum QT-740, Service Manual

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Chapter 4 Service Instructions
36
Models QT-740 & QT-750 - Service Manual
SERVICE MAINTENANCE
WARNING! Always disconnect the equipment
from the main power supply prior to any cleaning.
Visual Inspection
A complete series of inspections and functional checks was conducted at
installation to insure proper operation of the system. The following
inspection and adjustment procedures are recommended to maintain the
system in its original operating condition.
Perform Every Six Months:
•Check for evidence of loose hardware or loose wires
•Check all bearings and bearing surfaces for cleanliness and corrosion
•Clean Bearing Tracks
•Conduct a general inspection for worn or damaged parts
•Inspect Drive and Sync belts for wear, cracks, looseness
•Check for smoothness of Receptor Cabinet motion
•Verify that all ground conductors are properly and securely installed
and free of corrosion or damage
•Check all electrical cabling and wiring for wear and fraying
•Perform an operational test and check table travel and positions
(applicable to Model QT-750 only)
•Check external covers for proper fit, inspect for scratches that may
indicate cover misalignment
Functional Check for Model QT-750 Elevating Tables
1. Raise the table to the full up position and then turn power off.
2. Remove the upper and lower covers from the table as follows:
WARNING! On Model QT-750 tables, a Safety
Bracket (provided with Model QT-750 tables) is
used to prevent collapse of the Scissors Assembly
onto the table base plate during servicing. Verify
Safety Bracket is in place prior to servicing around
or below the Scissors Assembly.
3. Check mounting hardware that mounts table base to the floor for
a secure, tight fit. Be sure to check all six (6) mounting points.
4. Lubricate two (2) Lead Screw shafts using NGLI no. 1 grease
(Lubriplate MAG-1 Polymer Grease, part number L0189-098, or
equivalent).