Operation; O/I Control (Off/On); Speed Control; Troubleshooting And Maintenance - Cole-Parmer MICROPUMP 75211-10 Manual De Operación

Operation of the Pump Drive has been simplified, requiring only two controls, the O/I Control and the Speed Control
(see Figure 1). The operation of each of these controls is explained below.
O/I Control
The O/I Control is used for turning power OFF or ON. When the control is in the O position, power is OFF and the green
POWER light in the switch is not lit.

Speed Control

The Speed Control setting determines the rpm of the pump and, therefore, the flow rate. Depending on the model, the
maximum speed will be either 5000 or 9000. Rotating the Speed Control clockwise increases speed linearly.

Troubleshooting

SYMPTOM
The motor does not rotate when
the O/I switch (Figure 1) is
moved to I (ON) position.
POWER indicator does not glow.
Erratic variations in speed.

Cleaning

DANGER: Disconnect from power source before any cleaning operation is started.
Keep the Pump Drive enclosure clean by wiping down with a mild detergent. Never immerse or use excess fluid.

Replacement Parts

The following parts are user replaceable:
Description
Brush Caps (set of 2)
Motor Brushes (set of 2)
Speed Control Knob
Cordset—Australia
Cordset—Denmark
Cordset—India
Cordset—Israel
Cordset—USA
Cordset—European
Cordset—British
Cordset—Swiss
Cordset—Italian
Cordset—USA
Fuse—T1.6A, 250V
Fuse—T3.15A, 250V
Contact your dealer if you have service needs.

OPERATION

TROUBLESHOOTING AND MAINTENANCE

CAUSE
No power.
Fuse has blown.
Worn motor brushes.
(230V units)
(230V units)
(230V units)
(230V units)
(115V units)
(230V units)
(230V units)
(230V units)
(230V units)
(230V units)
(230V units)
(115V units)
1. Check that Pump Drive is plugged into a
power source.
2. Check that cord is inserted properly into
IEC-320 connector.
3. Check fuse.
4. Return for servicing.
Replace with recommended fuse.
CAUTION: Do not substitute.
See Motor Brush Check/Replacement.
Part Number
07520-03
07520-04
B-1083-0062
50001-60
50001-62
50001-64
50001-66
50001-68
50001-70
50001-72
50001-74
50001-76
50001-78
77500-11
77500-25
3
REMEDY