Watson-Marlow 521CC - Manual (Page 13)

10.3 Varmeca drives: cables and protection devices

Circuit breakers must be of the D-curve type suitable for a motor with an inverter.

Comply with the size of protection (gl) fuses given in the table below.

The cable size may vary according to legislation applicable in the country of use, which
will take precedence over the values given in the table below without exception.
NB: The mains current value is a typical value which depends upon the source impedance.
The higher the impedance, the lower the current. The fuses (UL approved) are intended for
installations capable of delivering 5,000A maximum at 480V.
10.4 Varmeca drives: commissioning / start-up

Remove the cover and connect a suitably rated mains cable via the cable gland to
connection points L1, L2 and PE (earth) of the Varmeca terminal block.
 Secure the connection cover and cable gland into position, ensuring that the IP65 sealing
is not compromised.

Power-up at the mains: the green indicator lamp lights and remains on continuously.

Start rotation by pressing a direction button for one second.

Set the speed reference using the side control knob, adjusting speed between 10Hz and
80Hz. The speed control knob is calibrated in percentages of maximum speed.

Press the Stop button to stop the unit.
Varmeca drives fitted with electrical interlock pumpheads
Commissioning / start-up: as standard Varmeca units.
If the guard switch is activated:

Press the Stop button twice to reset the unit after the pumphead guard has been closed

Re-start rotation by pressing a direction button for one second
Power VMA
rating
Current
(A)
gl fuses or circuit
breaker (A)
Cable
(sq mm)
230V/1/50/60Hz 0.25kW
1/3HP
A or B
21M-025
3.5 8 1.5
110V/1/50/60Hz 0.25kW
1/3HP
A or B
21M-025
6.8 16 2.5
The Varmeca must not be switched on with the connection cover
removed.
The motor Run command has been enabled: the motor will start as
soon as it is switched on.
Page 13 of 47 Watson-Marlow Bredel E-Manuals
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