Grundfos AP 50B.50.11.A1.V [12/20] General description

Grundfos AP 35B.50.08.A1.V [12/20] General description
36
CONTENTS
Page
1. General description 36
1.1 Applications 36
1.2 Storage and operating conditions 36
1.3 Sound pressure level 36
2. Safety 37
3. Electrical connection 37
3.1 Checking of direction of rotation 37
4. Installation 37
4.1 Connection 37
4.2 Pump location 37
4.3 Installation on auto-coupling 38
4.4 Free-standing installation 38
4.5 Setting of level switch 38
5. Start-up 39
6. Maintenance and service 39
6.1 Oil 39
6.2 Pump construction 39
6.3 Service kits 39
6.4 Contaminated pumps 39
7. Fault finding chart 40
8. Disposal 40
Before beginning installation procedures,
these installation and operating instruc-
tions should be studied carefully. The in-
stallation and operation should also be in
accordance with local regulations and ac-
cepted codes of good practice.
1. General description
Fig. 1
1.1 Applications
The GRUNDFOS AP35B and AP50B pumps are sin-
gle-stage submersible pumps designed for the
pumping of waste water.
The pump is capable of pumping water which con-
tains a limited quantity of solids, however not stones
and similar materials, without being blocked or dam-
aged.
The pump is available for automatic as well as man-
ual operation and can be installed in a permanent in-
stallation (on auto-coupling or as a free-standing
pump) or used as a portable pump.
The pump is suitable for:
Incorrect application of the pump (e.g. resulting in
blocking of the pump) and wear are not covered by
the warranty.
1.2 Storage and operating conditions
Storage temperature:
Down to 30°C.
Minimum liquid
temperature:
0°C.
Maximum liquid
temperature:
+40°C.
Installation depth:
Maximum 7 metres below
liquid level.
pH value:
Between 4 and 10.
Density:
Maximum 1100 kg/m³.
Viscosity:
Maximum 10 mm²/s.
Technical data:
See pump nameplate.
1.3 Sound pressure level
The sound pressure level of the pump is lower than
the limiting values stated in the EC Council Directive
98/37/EEC relating to machinery.
Discharge port
Handle
TM01 3594 4998
with clamp
Pump inlet
Level switch
Applications AP35B AP50B
Groundwater lowering
●●
Pumping in drainage pits
●●
Pumping in surface water pits
with inflow from roof gutters,
shafts, tunnels, etc.
●●
Emptying of ponds, tanks, etc.
●●
Pumping of fibre-containing
waste water from laundries
and industries
●●
Pumping of domestic waste
water from septic tanks and
sludge treating systems
●●
Pumping of domestic waste
water without discharge from
water closets
●●
Pumping of domestic waste
water with discharge from wa-
ter closets
Maximum particle size [mm] 35 50
The pump must not be used in or at swim-
ming pools, garden ponds, etc. when there
are persons in the water.

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