QAL Medical 480, Service And Technical Manual

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13.2 Troubleshooting (480E PRO Only)
PROblEM POSSIblE CaUSE fIX
Unit will not power up No voltage to Unit Replace Power Supply
Unit does not beep No voltage to Unit Replace Switch
Pendant failure Replace Pendant
Check pendant cable
at both ends
Return for service
Pendant, erratic display Pendant failure Replace Pendant
Damaged Display Replace Pendant Display
Mechanical binding/jerking Insufficient lubrication on track, Use a Light Lithium
ballscrew, and track seals based lubricant, Lubriplate #105
on tracks and ballscrews, and a
Silicone spray on track seals
Bearing bracket assembly failure Replace bearing bracket
Assembly
Ballscrew failure Replace Ball Screw
Assembly
U-Bracket/Slider Assembly failure Replace U-bracket/Slider
Assembly Bracket
Assembly
Motor failure Replace Motor
Return for service
Insufficient lifting power Check that return on load (ROL) Increase force setting with
setting is sufficient pendant controller
Note: For error codes see error codes in section 12.2.