Grundfos Unilift AP12 Notice D'installation Et De Fonctionnement page 4

CONTENTS
1. Symbols used in this document
2. Overview drawing
3. Applications
4. Functions
5. Storage and operating conditions
6. Safety
7. Electrical connection
8. Installation
8.1 Pipe connection
8.2 Installation dimensions
8.3 Pump location
8.4 Adjustment of cable length for float switch
9. Operation
9.1 Starting
10. Maintenance and service
10.1 Pump construction
10.2 Cleaning the pump
10.3 Contaminated pumps
10.4 Replacement of parts
11. Technical data
11.1 Sound pressure level
12. Fault finding chart
13. Disposal
Warning
Prior to installation, read these
installation and operating instructions.
Installation and operation must comply
with local regulations and accepted
codes of good practice.
1. Symbols used in this document
Warning
If these safety instructions are not
observed, it may result in personal
injury!
If these safety instructions are not
observed, it may result in malfunction
Caution
or damage to the equipment!
Notes or instructions that make the job
Note
easier and ensure safe operation.
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2. Overview drawing
Discharge port
Pump
sleeve
Suction strainer
Fig. 1 Unilift AP pump
3. Applications
The Grundfos Unilift AP pumps are single-stage,
submersible pumps designed for the pumping of
wastewater.
The pumps are capable of pumping water containing
a limited quantity of spherical particles up to these
sizes:
• Unilift AP12: 0.47" in diameter
• Unilift AP35: 1.38" in diameter
• Unilift AP50: 1.97" in diameter
Pumping of spherical particles exceeding the above
sizes may block or damage the pump.
The pumps are designed for automatic operation
with float switch and for manual operation. The pump
can be installed in a permanent installation or used
as a portable pump. Incorrect use of the pump, for
example resulting in blockage or wear of the pump,
is not covered by the warranty.
Handle with
clamp
Float switch