Watson-Marlow 704U - Manual (Page 7)

Watson-Marlow Bredel E-Manuals
http://www.watson-marlow.it/pdfs-global/m-704su-gb-03.htm[10/07/2012 14:21:14]
13 Guard safety warnings
If the track is lifted while running in each
operating mode the pump will stop and this
warning will be displayed:
When the track has been correctly re-positioned on the pumphead, press any key on the
keypad, then press Start on the keypad and the pump will continue to operate.
14 Error messages
Tachometer fault
Over temperature error
EEPROM error
EEPROM read error
EEPROM write error
EEPROM exhausted error. There is a maximum number
of times the EEPROM can be written to. If
is
displayed, the EEPROM must be replaced.
RAM corruption error
15 Care and maintenance
The only scheduled maintenance required for the 704S/R and the 704U/R is inspection of
the motor brushes and their replacement before their length is less than 10mm. The life of
the brushes will depend on the duty of the pump, but is expected to be a minimum of
2,000 hours at maximum speed.
If the pump requires cleaning, use a mild solution of detergent in water after removing the
pumphead. Do not use strong solvents. The sun gear of the gearbox in the 701R, 701RE,
701RX and 701REX pumpheads should be lightly greased with a quality gear grease every
one thousand hours and after cleaning. If harmful liquids are spilled on to the pump, the
case and pumphead should be thoroughly cleaned with detergent and water. Strong
solvents should not be used. The sun gear of the gearbox in the pumphead should be
lightly greased with a good gear grease after the pumphead has been cleaned.
16 Specification
Maximum rotor speed 360rpm
Voltage/frequency 100-120/220-240V 50/60Hz
Control range 50:1
Power consumption 704S, 704U 515VA
Fuse rating Type T (anti-surge) 8A
Operating temperature range 5°C to 40°C
Storage temperature range -40°C to 70°C