DESCRIPTION
HANSEN M4 ACC GEAR UNITS
FOR AIR COOLED CONDENSER DRIVES
Motors
The gear units are to be fitted with standard flange mounted IEC
motors (type B5). For more information on motors, refer to motor
catalogues.
For Nema motors, refer to us.
Use of two speed motors: when changing speed with two speed
motors, the motor has to be slowed down below the low speed, be-
fore energising the slow speed winding.
Optional devices
Some devices can optionally be provided (refer to pages A39-A40).
More detailed information about the optional devices is mentioned in
separate technical manuals. Refer to us.
Backstop
Built-in backstop to prevent the fan from "windmilling". Internal
lubrication is assured. The backstop is accessible after removing the
motor and the lantern housing.
Filter
With incorporated pressure relief valve.
A filter with incorporated pressure relief valve and visual or electrical
contamination indicator is available as an option.
Heaters
Electrical heating devices for low temperature start-up are available
for Hansen M4 ACC gear units.
Oil level switch
To control the oil level in the gear unit, an oil level switch can be
provided. This switch can trigger an alarm signal when the oil level
falls beneath a specified limit.
Pressure switch or pressure transmitter
To control the oil pressure, a pressure switch or pressure transmitter
can be provided. They can trigger an alarm signal when the oil
pressure falls beneath a specified limit.
Pt100
To control the oil bath temperature. The Pt100 can trigger an alarm
signal when the oil temperature is higher than a specified limit.
Shipping conditions
Inspection prior to shipment
Test run: all gear units are tested under no load
Conformity Check
Protection
Shaft extension: greased and protected with waxed
waterproof paper
Lubricants
Hansen M4 ACC gear units are shipped without oil.
Grease lubrication points are factory filled.
For information relating to storage, handling, installation,
start-up and maintenance, refer to the service manual which is
supplied together with each gear unit.
Protection
Standard protection systems
As a standard, Hansen M4 ACC gear units are provided with a
painting system that is suitable to be applied in the atmospheric-
corrosivity category C4 (L) according to ISO 12944-2 (and ISO
12944-5).
The choice of colour has no influence on the technical quality of the
painting system.
Other painting systems can be offered to meet the required atmos-
pheric-corrosivity category for your application.
Bolts and nuts provided with appropriate protection.
A4
E
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