English (GB)
6
English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
Page
1. General description
1.1 Applications
Grundfos AP51 pumps are designed for pumping:
•
wastewater,
•
sludge-containing water, and
•
groundwater.
If permitted by local laws and regulations, the
Grundfos AP51 pumps may be used for the pumping
of sewage from single and multifamily houses.
The compact design makes the pumps suitable for
both temporary and permanent installation.
Furthermore, the pumps are suitable for
free-standing installation as well as installation by
means of an auto-coupling guide rail system.
1.1.1 Explosive environments
Use the explosion-proof AP pump versions for
applications involving the risk of explosion.
Note: In each individual case the explosion
classification of the pump must be approved by the
local authorities for use at the desired installation
site.
1.2 Operating conditions
1.2.1 pH-value
AP pumps in permanent installations can cope with
pH-values ranging from 4 to 10.
1.2.2 Liquid temperature
Liquid temperature: 0 °C to +40 °C.
For short periods up to +60 °C.
1.2.3 Density of pumped liquid
Maximum density of pumped liquid: 1100 kg/m
3
.
1.2.4 Installation depth
Maximum 10 metres below liquid level.
1.2.5 Level of pumped liquid
The lowest stop level must always be above the top
of the pump housing.
1.2.6 Operation
Maximum 15 starts per hour.
Note: The pumps are designed for intermittent
operation only.
1.3 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.
2. Safety
3. Transportation and storage
The pump may be transported and stored in a
vertical or horizontal position. Make sure that it
cannot roll or fall over.
Always lift the pump by its carrying handle, never by
the motor cable or the hose/pipe.
For long periods of storage, the pump must be
protected against moisture and heat.
After a long period of storage, the pump should be
inspected before it is put into operation. Make sure
that the impeller can rotate freely. Pay special
attention to the shaft seals and the cable entry.
4. Installation
The loose nameplate supplied with the pump should
be fixed at the installation site.
Prior to installation, check the oil level in the oil
chamber, see section 7. Maintenance and service.
Pumps supplied with control box
Prior to installation, read these
installation and operating
instructions. Installation and
operation must comply with local
regulations and accepted codes of
good practice.
Pump installation in wells must be
carried out by specially trained
persons.
