©Copyright 2011 Liberty Pumps Inc. All rights reserved 4
4.
Control Panel:
Risk of Electric shock:
This pump is supplied with a grounding conductor. To reduce the risk of
electric shock, be certain that it is connected only to a properly grounded earth wire. All electrical circuitry should be
installed in accordance with the National Electric Code (NEC) and all applicable local codes or ordinances.
The control panel that is an integral part of this complete unit is supplied with its own separate
Installation/Operation/Maintenance manual. Ensure that you have received this manual, and that you read and
understand it prior to installing this unit. Your familiarity with the control panel manual is critical.
A separate 115V branch circuit should be installed for the control circuit. We do not recommend splitting the
incoming pump power circuit to power the control circuit. Connect the grinder pump leads and the float switch leads
to the control panel in accordance with the instructions included with those units.
5.
Float Switches
:
The float switches are pre-mounted on a quick tree. For quick tree removal, loosen the cord nut
and pull the tree straight out of the tank. The pump cycle is pre-
set at the factory at 12” for D3648 (approximately
53 ga
llons) and 18” for D3672 (approximately 79 gallons). The pump cycle can be adjusted by loosening the cord
clamp and moving the “on” float up or down. We do not recommend adjustments of more than 3” in either
direction
– please call the factory if you need to adjust the pump cycle beyond this recommended level.
6.
Testing and Startup:
Follow the testing and startup procedures found in the grinder pump and control panel
manual.
4
Maintenance and Troubleshooting
The grinder pump and control panel are supplied with their own separate
Installation/Operation/Maintenance manuals. Ensure that you have received these manuals, and that you read and
understand them prior to installing this unit. Your familiarity with the grinder pump manual and the control panel manual is
critical. Please follow the Maintenance and Troubleshooting procedures provided in those manuals.
Model
Off
Level
On
Level
Alarm
level
Volume/
cycle
D3648
13”
(33 cm)
25”
(64 cm)
31”
(79 cm)
62 gal.
(235 liters)
D3660
13”
(33 cm)
28”
(71 cm)
34”
(86 cm)
75 gal.
(284 liters)
D3672
13”
(33 cm)
31”
(79 cm)
37”
(94 cm)
88 gal.
(333 liters)
D3684
13”
(33 cm)
34”
(86 cm)
40”
(102 cm)
101 gal.
(382 liters)
D3696
13”
(33 cm)
37”
(94 cm)
43”
(109 cm)
115 gal.
(435 liters)
