Insulating The Pump Housing; Electrical Installation - Grundfos ALPHA2 Series Installation And Operating Instructions Manual

3.4 Insulating the pump housing

Fig. 8 Insulating the pump housing
You can reduce the heat loss from the pump and pipe by
insulating the pump housing and the pipe with the insulating
shells supplied with the pump. See fig. 8.
Do not insulate the control box or cover the control
panel.
3.4.1 Air-conditioning and cold-water systems
Use the insulating shells in air-conditioning and cold-water
systems as well.
The insulating shells for air-conditioning and cooling systems are
available as accessories. You can order the insulating shells
separately. See section
12. Accessories.
6

4. Electrical installation

Fig. 9 Electrical connection
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply before starting any
work on the product. Make sure that the power
supply cannot be accidentally switched on.
DANGER
Electric shock
Death or serious personal injury
- Connect the pump to earth.
Connect the pump to an external mains switch with
a minimum contact gap of 3 mm in all poles.
Carry out the electrical connection and protection in accordance
with local regulations.
• The motor requires no external motor protection.
• Check that the supply voltage and frequency correspond to
the values stated on the nameplate. See section
6.4.1 Nameplate.
• Connect the pump to the power supply with the plug supplied
with the pump. See steps 1 to 7.