1 varmeca drives: installation, 2 varmeca drives: connections – Watson-Marlow 621CC User Manual

Page 11

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The Varmeca-30 is fitted with safety devices which stop the motor in the event of a fault.
The motor can become jammed for mechanical reasons. Voltage fluctuations and power
cuts may also stop the motor.

Removing the cause of a shutdown can lead to restarting, which may be dangerous for
certain installations
. It is essential that the user guards against the motor restarting after
shutdown, if this is undesirable.

13.1 Varmeca drives: installation

The standard Varmeca integrated drive requires no connection other than to the mains
power supply.

The Varmeca motor fan cools the whole unit. Make sure that the ventilation air inlet is
free of obstruction.

It is the responsibility of the owner or user to ensure that the installation, operation and
maintenance of the inverter complies with health and safety regulations of the relevant
country of use.

13.2 Varmeca drives: connections

The voltages on the power terminal blocks and the cables connected to them may cause
fatal electric shocks. The drive stop function does not protect against these high
voltages.

The drive power supply must be protected against overloads and short circuits.

It is vital to respect the rating of protection devices.

Connections should be made with copper conductors only.

This Varmeca-30 must be connected to an approved earth terminal.
It is imperative that the equipment is powered via an isolating
device and a circuit-breaking device (power contactor) which can
be controlled by an external safety system (emergency stop, fault
detector).

Before carrying out any work, disconnect and lock the drive power
supply. For single phase units, wait two minutes to make sure that
the capacitors have fully discharged. After connection work, make
sure that the seals are firmly in place, and the screws and cable
glands are watertight to ensure IP65 protection. Clear any
condensation from the drain holes at the bottom of the motor.

Page 11 of 46

Watson-Marlow Bredel E-Manuals

21/12/2011

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