Technical Data; Storage Temperature; Operating Conditions; Sound Pressure Level - Grundfos Unilift AP35B Installation And Operating Instructions Manual

Fault
4. The pump runs but
gives no water.

8. Technical data

8.1 Storage temperature

Down to -30 °C.

8.2 Operating conditions

Minimum liquid
temperature
Maximum liquid
temperature
Installation depth
pH value
Density
Viscosity
Maximum particle size
Technical data
Always have at least 3 m free cable above
liquid level. This limits the installation
depth to 7 m for pumps with 10 m cable
and to 2 m for pumps with 5 m cable.

8.3 Sound pressure level

The sound pressure level of the pump is lower than
the limiting values stated in the EC Council Directive
2006/42/EC relating to machinery.
14
Cause
a) The pump is blocked by impurities.
b) The outlet pipe or valve is blocked by
impurities.
c) The impeller is not properly fixed to the
shaft.
d) There is air in the pump.
e) The liquid level is too low. The pump
inlet is not completely submerged in
the pumped liquid.
f) Pumps with float switch: The float
switch does not move freely.
0 °C
40 °C
Maximum 7 m below liquid
level
4-10
3
Maximum 1100 kg/m
2
Maximum 10 mm /s
Max. spherical diameter:
Unilift AP35B: 35 mm
Unilift AP50B: 50 mm
See the pump nameplate.
Remedy
Clean the pump.
Clean the outlet pipe or valve.
Tighten the impeller.
Vent the pump and the outlet
pipe.
Submerge the pump in the liquid
or adjust the level switch.
Adjust the float switch. See
section
switch cable

9. Disposing of the product

This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
The crossed-out wheelie bin symbol on
a product means that it must be
disposed of separately from household
waste. When a product marked with this
symbol reaches its end of life, take it to a
collection point designated by the local
waste disposal authorities. The separate collection
and recycling of such products will help protect the
environment and human health.
See also end-of-life information at
www.grundfos.com/product-recycling.
3.2.7 Adjusting the float
length.