Watson-Marlow 505U - Manual (Page 6)

6
• 220rpm 4.71kHz
Learn and repeat
The 505U incorporates a Learn and Repeat feature, which enables a dose to be memorised and repeated. The dose volume is
adjustable via the keypad. Full details are given in the Technical section.
Error messages
If a fault condition is detected in the drive unit it will stop, all keys will be disabled, and the display will flash:
Er1 Tachometer fault
Er2 Over temperature error
Er3 EEPROM error
Er4 EEPROM read error
Er5 EEPROM write error
Er6 EEPROM exhausted error. There is a maximum number of times the EEPROM can be written to. If Er6 is displayed,
however, the EEPROM must be replaced.
Er9 RAM corruption error
Care and maintenance
The only scheduled maintenance of the 505U is to inspect the motor brushes and to replace them before their length is less than
6mm 1/4". The life of the brushes will depend on the duty of the pump, which is expected to be at least 10,000 hours at maximum
speed. When the pump needs cleaning, remove the pumphead and use a mild solution of detergent in water. Do not use strong
solvents.
If the gearbox is rebuilt you should use 15 ml of the recommended lubricant, which is RD105, this is a SAE 30 mineral oil loaded
with molybdenum disulphide to form a soft fluid grease.
Specification
Maximum rotor speed 55, 220rpm
Voltage/frequency 100-120/220-240V 50/60Hz
Control range 110:1
Power consumption 100VA
Shaft Torque 2.2Nm
Operating temperature range 5 to 40C
Storage temperature range -40C to 70C
Weight 7.7kg (17Ib)
Noise <70dBA at 1m
Standards EN60529 (IP31)
Machinery Directive 98/37/EC EN60204- 1
Low Voltage Directive 73/23/EEC EN61010- 1
EMC Directive:89/336/EEC EN50081-1 / EN50082-1
501RL Pumphead
The 501RL pumphead has two spring-loaded working rollers, which automatically compensate for minor variations in tubing wall
thickness, giving extended tube life. The 501RL is set during manufacture to accept tubing with wall thicknesses of between 1.6mm
and 2.0mm, and internal diameters of up to 8.0mm. It is equipped with a "tool lockable" guard for increased safety. This should be
locked shut whilst the pump is in use.
The pumphead can be run clockwise for extended tube life, or anti-clockwise to operate against higher pressures.
Flow rates
Flow rates for the 505U were obtained using silicone tubing with the pumphead rotating clockwise, pumping water at 20C with zero
suction and delivery pressures. For critical applications determine flow rates under operating conditions.
Installation