Watson-Marlow 504U/RL - Manual (Page 7)

7
Speed
A remote potentiometer with a nominal value of between 4.7kohm and 5 kohm should be wired as shown, When
using a remote potentiometer do not connect a voltage/current control signal at the same time. The speed control
signal will require calibration relative to the minimum and maximum settings of the potentiometer. Use the offset
and range potentiometers as described under Calibration for auto control.
Tachometer output
This facility can be used to indicate motor speed or total the number of motor revolutions. Select either 1) 0-5V DC
or 2) 5V pulse train output using the tachometer output switch.
Car Car Car Car Care and maintenance e and maintenance e and maintenance e and maintenance e and maintenance
The only scheduled maintenance of the pump unit is to inspect the motor brushes and to replace them before their
length is less than 10mm. The life of the brushes depends on the duty of the pump but is expected to be at least
4,000 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.
For gearbox rebuilds, use 15ml of the recommended lubricant RD-105. This is a SAE 30 mineral oil loaded with
molybdenum disulphide to form a soft fluid grease.
Specif Specif Specif Specif Specifica ica ica ica ication tion tion tion tion
Maximum rotor speed 55rpm, 220rpm, 300rpm
Shaft torque 2.2Nm
Control range 100:1
Voltage/frequency 100-120/220-240V 50/60Hz
Power consumption 100VA
Operating temperature range 5C to 40C
Storage temperature range -40C to 70C
Noise <70dB(A) at 1m
Weight 9.0kg
Standards EN60529 (IP55)
Machinery Directive 98/37/EC EN60204-1
Low Voltage Directive 73/23/EEC EN61010-1
EMC Directive 89/336/EEC EN50081-1/EN50082-1