Operating and servicing instructions
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The oil capacity given on the gearbox rating plate is an approximate quantity. The gearbox is to
be filled until the oil is at least up to the middle of the oil sight glass.
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To ensure that the oil level is correct, after filling with lubricant the oil system is to be placed in
operation for approx. 5 minutes. If the oil level drops during this process, the oil is to be topped
up.
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Any oil spilt is to be removed immediately with an oil binding agent.
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After filling, the air filters are to be re-fitted and the inspection holes securely closed.
It is imperative to ensure that no dirt enters the gearbox during an oil change.
8.2
Checking the gearbox
Prior to initial commissioning, the gearbox is to be carefully inspected to avoid damage due to incor-
rect installation.
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All mechanical parts, e.g. inspection hole covers, guards, foundation threaded fittings and oil
supply pipes must be tight.
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Check the oil level at the oil sight glass.
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There must not be any leaks on the gearbox.
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All supply pipes must be correctly connected.
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The gearbox must be securely fastened to the foundation (section 6.2).
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All rotating parts must be covered in accordance with regulations and secured against acci-
dental contact (section 3).
8.3
The first run
The gearbox can only be operated in one direction of rotation (see installation drawing and gearbox
data sheet).
Operation in the opposite direction of rotation is not allowed.
The gearbox is only allowed to be placed in operation and operated when the oil system is
running.
If the oil system fails, the gearbox is to be shut down immediately.
The lubricant in the oil system must be pre-heated to the minimum operating temperature. It
is recommended to leave the oil system running for at least 10 minutes prior to starting the
drive unit. Here it is to be ensured that inadmissible foaming does not occur.
8.4
Monitoring the torque
Henschel Industrietechnik twin screw extruder gearboxes can transmit very high torques via the two
output shafts. The maximum permissible torques are to be found in the gearbox data sheet.
It is possible to monitor the torques at the output shafts with the aid of torque measuring shafts. The
shafts are checked and calibrated. The calibration log is included with the gearbox. The part num-
bers for the measuring shafts as well as the number of the calibration log are noted on the rating
plate.