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DMLU
Installation
1. Before installation:
a.) Use a megger to measure the insulation resistance between the ground wire and each phase of the motor.
Keep the ground wire off the ground during measurement. The value of each reading should be more than 20
meg-ohms.
2. Installation:
a.) Using a chain or lifting cable assembly, lower the pump into the tank or wet well.
DO NOT USE THE POWER & SENSOR CABLE TO LIFT PUMP.
b.) Do not install the pump horizontally. Ensure that the pump is upright and on a secure base. Installation of pump
with Quick Discharge Connector (QDC) shall be in accordance with manual entitled "Quick Discharge Connector."
c.) Install pump in a location within the tank that has the least amount of turbulence.
d.) Support the discharge piping to prevent vibration.
e.) Install proper ventilation so that air will not become stagnant.
f.) Do not permit the end of the discharge piping to become submerged, as it will result in backflow when the pump stops.
g.) Set control operating levels (i.e. floats) so that pump is not running for more than ten minutes with water level at
minimum operating level as indicated in below chart. Continuous operation of pump at minimum water level will
result in automatic cut-off switch in motor to be activated.
3. Electrical Wiring:
Note: All electrical wiring should be performed by a qualified electrician, and in accordance with all national
and local electrical codes. Incorrect wiring can result in serious injury.
a.) Wiring should be performed as indicated in Figure 3.
b.) Do not allow the end of the cables to become immersed in water.
c.) Make sure pump is properly grounded using the green ground wire in the power cable. Do not connect the
green wire to the power supply.
CALL 1-800-577-8111 FOR SALES AND SUPPORT
CALL 1-800-577-8111 FOR SALES AND SUPPORT
Motor Size
(HP)
H2 (in)
H1 (in)
Figure 2
Figure 3
3
5
7.5
10
21
9
/
24
11
/
27
13
/
27
13
16
16
16
11
11
11
9
/
11
9
16
15
20
30
/
30
3
/
30
3
/
32
5
/
16
8
8
8
/
12
11
/
12
11
/
12
15
/
16
16
16
16
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