Watson-Marlow 120F/DV - Manual (Page 17)

Watson-Marlow 120F IP31 pumps: operating instructions 3
2.4 Operation
2. 4.1 Start and stop
To start the pump, press the green START key on
the keypad. The pump rotates clockwise at its fixed
speed, a beep sounds and an LED beside the START
key illuminates.
To stop the pump, press the red STOP key on the
keypad. The pump stops, a beep sounds and the
LED beside the START key goes out.
2.5 Performance data
This pump is available in five standard versions,
each offering a fixed speed. For performance infor-
mation, see Section 3 (102R or 114DV pumpheads)
of these instructions.
2.6 Error codes
The LED beside the START key flashes to indicate a
fault. Fast flashing—¼ second on, ¼ second off
—indicates an error which may be resolved by
cycling the power; if the fault is not resolved,
contact your local service centre. Slow flashing—
½ second on, ½ second off—indicates a fault which
requires the pump to be returned to your local serv-
ice centre.
Fixed speeds available with pumphead options
102R 114DV
10 rpm
17 rpm
31 rpm
52 rpm
220 rpm