4
CONTENTS
Page
1. General description 4
1.1 Applications 4
1.2 Operating conditions 4
1.3 Sound pressure level 5
2. Electrical connection 5
3. Installation 5
3.1 Pipe connection 5
3.2 Basic requirements 5
3.3 Pump location and positioning 5
3.4 Adjustment of float switch 6
3.5 Non-return check valve 6
4. Operation 6
4.1 Starting 6
5. Maintenance 6
5.1 Cleaning the pump 6
5.2 Replacement of parts 7
6. Fault finding chart 8
7. Disposal 8
1. General description
Fig. 1
1. Discharge port 1.25" NPT.
2. Handle.
3. Clamp.
4. Suction strainer.
5. Outer casing.
6. Float switch (optional).
1.1 Applications
The Grundfos Unilift KP 150, KP 250 and KP 350
pumps are single-stage submersible pumps
designed for pumping grey water.
CAUTION: This pump has been evaluated for use
with water, grey wastewater and heated wastewater.
The pump is capable of pumping water which contains a limited quantity of spherical solids up to 3/8"
in diameter without being blocked or damaged.
The pump is suitable for automatic (with float switch)
as well as manual operation and can be installed in a
permanent installation or used as a portable pump.
The pump is suitable for:
• Drainage of basements or buildings prone to
flooding,
• Pumping of wastewater from washing machines,
sinks, baths, showers, etc., up to the sewer level,
• Dewatering of sites or the pumping of water for
fountains,
• Pumping in draining wells,
• Emptying swimming pools, ponds, tanks, or fountains.
The pump is not suitable for pumping:
• sewage
• liquids containing long fibers
• liquids containing solid particles larger than 3/8" in
diameter
• flammable liquids (oil, gasoline, etc.)
• aggressive liquids.
Note: If the pump has been used for very dirty or
chlorinated water it should be flushed thoroughly
with clean water after use.
The pump contains approx. 70 ml of non-poisonous
motor liquid that may pollute the pumped liquid if the
pump should leak.
1.2 Operating conditions
Liquid temperature
Minimum 32°F. The maximum liquid temperature
depends on the rated voltage of the pump, see the
table below.
Storage temperature
Not lower than –4°F.
Minimum water level
Water level must be above strainer inlet.
Maximum installation depth
30 feet below liquid level.
Prior to installation, read these installation
and operating instructions. Installation and
operation must comply with local regulations and accepted codes of good practice.
TM03 4327 2006
With float switch
Do not use the pump in or at swimming
pools, garden ponds, etc. when there are
persons in the water.
Voltage
Maximum
liquid temperature
1 x 115 V, 60 Hz +122°F (+113°F KP 350)
At intervals of at least 30 minutes, the pump is
allowed, however, to run at maximum +158°F for
periods not exceeding 2 minutes.