Electrical Data; Control Panel; Installation; Electrical Connections - Grundfos Unolift Instrucciones De Instalación Y Funcionamiento

3.5 Electrical data

Voltage
Pump type
[V]
AP50B.50.08.1V 1 x 230
AP50B.50.11.1V 1 x 230

3.6 Control panel

The control panel is an SJE Rhombus simplex/
duplex panel. See Rhombus installation manual
for further information.

4. Installation

4.1 Electrical connections

Warning
All electrical work should be
performed by a qualified electrician
in accordance with the latest edition
of the National Electrical Code, local
codes and regulations.
Warning
Before making any connections in
the control panel or work on the lift
system, it must be ensured that the
power supply has been switched off
and that it cannot be accidentally
switched on.

4.2 Mechanical installation

Control
Vent
panel
Influent
ON
OFF
Fig. 7 Unolift system
P2 L
n
I
start
[hp] [A]
1.0 6.4 24.2
1 1/2 8.41 30
Gate valve
Check
valve
Basin
Control
panel
Vent
Influent
ON
OFF
Fig. 8 Duolift system
This description applies to both Unolift and Duolift
systems:
• The bottom of the pit must be solid and the
basin must be level. If installed outdoors and
subject to freezing, make provisions to protect
the pump.
• Install check valve(s) suitable for handling
solids in the discharge pipe to prevent
backflow. Follow the valve manufacturer's
installation recommendations.
• Install an adequately sized gate valve on the
discharge side of the check valve in order to
facilitate pipework maintenance.
• Install a 4" influent pipe. Lubricate the pipe
with liquid soap for installation in grommets.
• Install a 2" vent pipe to vent gases and odors
to the atmosphere.
• Follow instructions on the control panel for
mounting and for connecting power supply
from source to panel.
• Before placing backfill around basin, carry out
a test of the system with water to assure
proper operation.
Unolift and Duolift systems are not
Caution
designed for traffic loads.
Gate valve
Check
valve
Basin
9