Operating and servicing instructions
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7 Oil system
The gearbox is to be connected to a suitable oil system. The necessary data are to be found in the
gearbox data sheet in these operating and servicing instructions. Suction and pressure connections
are fitted to the gearbox in the form of threaded holes. The position and the connection data are to
be found in the installation drawing.
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The threaded holes are sealed with plugs for transport. These plugs are to be retained and re-
fitted if the gearbox is removed.
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It is to be checked whether all monitoring devices fitted to the oil system function correctly.
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The oil system must comply with the technical requirements listed in the gearbox data sheet.
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The system is to be equipped with pressure switches for monitoring the oil pressure, if the oil
pressure drops below 0.5bar the main motor is to be shut down.
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The temperature of the oil is to be monitored. For fitting a temperature sensor, depending on
the order, there is a threaded hole G1/2" in the lower part of the base gearbox housing.
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The oil filter must have the filter mesh required in the gearbox data sheet and be tested for cor-
rect function.
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The system is to be checked for oil leaks at operating temperature.
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All threaded fittings are to be checked for tightness.
8 Commissioning the gearbox
When commissioning the gearbox, it is imperative that the instructions in section 3 "Safety instruc-
tions" are observed.
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Prior to commissioning, the rest of the conservation oil or the running-in or test oil is to be
drained from the gearbox and disposed of in accordance with regulations.
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Flushing with petrol or other cleaning agents is forbidden, as the residue left in the gearbox can
cause decomposition.
8.1
Filling with lubricant
Prior to commissioning, the gearbox is to be filled with fresh oil via the threaded hole for the vent
screw or via the inspection holes.
When filling the gearbox, the lubricant is to be filtered with the aid of a funnel with filter (filter
mesh 40µm). Dirty oil can cause premature damage to bearings and gears.
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Only the lubricants given in the attached lubricant table (section 14) for twin screw extruder
gearboxes from Henschel Industrietechnik are allowed to be used. The use of other lubricants is
only allowed following consultation and agreement with Henschel Industrietechnik.
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The approximate oil capacity, the oil type and the oil viscosity are to be found in the instructions
on the rating plate.