Adjustment (Centring) Of The Running Belt - h/p/cosmos 150/50 mercury Operating And Service Manual

Procedure
The correct belt tension is between 0.4 - 0.5 %. Mark a line of 1000 mm [1] when the belt [4] is completely loose.
Tighten the belt until the line is expanded up to 1004 - 1005 mm (= 0.4 to 0.5 %). For models with a running surface up
to 190 x 65 cm, the belt is tightened with a hex socket (8 or 10 mm) at the rear drive shaft [2]. All bigger models are
tightened at the front drive shaft [5]. The correct belt tension is achieved by turning the left and right adjustment and
tightening screws (hex sockets) clockwise. The belt can be tightened until the shaft no longer turnswhenthe belt is
blocked.
The allen key must be pulled out of the screw immediately after usage due to risk of injury!
The oversize machine h/p/cosmos saturn 450/300rs has an automatic belt tightening system with motors and sensors
and does not need to be tightened manually.
8.6

Adjustment (centring) of the running belt

Attention: Dangerous gap/capture area at the tail shaft at the back of the device (belt re-entry
zone). Take care that long hair and loose clothing are not caught in the gap of the tail shaft.
For safety reasons, the adjustment procedure must be attended by a second person who can
immediately press the emergency stop button in an emergency.
If necessary, lubricate the running belt before adjusting it. Lubrication may have impact on the centring of the belt.
Adjust the running belt while the device is in operation with the help of the left trimming screw of the running machine.
Use the enclosed hex socket (8 mm). Operate the running machine at 12 km/h without elevation. Monitor the running
belt for at least 2 minutes. It should be in a centre position on the rear roller (tail shaft).
If this is not the case, please do the following:
Move the running belt to the right by turning the LEFT trimming screw to the right.
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Move the running belt to the left by turning the LEFT trimming screw to the left.
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If the discrepancy is only minor, the screw should only be turned max. ¼ turn; in the case of major discrepancies
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turn the screw max. ½ turn.
Observe the running belt after each alteration for at least 2 minutes. For control purposes, operate the running
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machine at 5 km/h and 20 km/h.
The adjustment procedure is finished if the running belt stays in the centre of the rear roller (tail shaft) after having
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been operated at a speed of 12 km/h for at least 4 min.
Uphill run and other running styles may lead to locomotion of the running belt. +/- 2 cm are to be considered as a
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tolerance zone. As long as the running belt returns to the centre at a speed of 12 km/h, it must not be readjusted.
The running belt will remain in the adjusted position for a period of months if it has been adjusted correctly.
During "reverse belt rotation" (downhill run), a re-adjustment of the belt
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position (centring) is required.
By evenly turning the left and right trimming screws to the right, the running
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belt can be tightened if necessary. See chapter 0 „running belt tension".
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maintenance and safety inspections
created 04.05.2012 printed 04.05.2012 page: 107 of 191