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d) Checking the belt tension
• Checkthetensionofthedrivebeltsnowandthen.
• Ifrequired,retentionthembysettingthebelttensionerwiththesettingscrewssothatthetoothedbeltscanstillbetwistedby180°easilywith
twongers.
The toothed belts must not be tensioned too strongly. If a belt tensioner bends, the belt tension must be reduced under all
circumstances.
Method for precise setting of the belt tension
Forthis,youneedaweightof1kg,suchasawaterbottlelledwithwatertoreachthespeciedweightof1kg.Youalsoneedacordforat-
tachment.
Place a soft support under the printer so that it is not scratched when tipping and so that it cannot damage the table top.
Now tip the printer to its front near the edge of the table and attach the
weightinthemiddletothepartofthetoothedbeltfortheX-direction
that is now at the bottom using the cord.
The weight must be suspended so that it can move freely.
Measure the distance between the two toothed belt halves as illus-
trated. Set a distance of 28 mm with the belt tensioner (measured at
the outside of the toothed belt).
28 mm