Liberty Pumps Engineered Pump Systems (EPS) User Manual
Page 4
©Copyright 2014 Liberty Pumps Inc. All rights reserved 4
EPS
System
3.
Venting:
The fiberglass basin provided
with the system must be completely sealed
and properly vented in order to meet health
and plumbing code requirements. The
system is designed to be vented through
the inlet to an existing building vent stack.
In order to accomplish this, there must be
no traps between the system inlet and the
nearest building vent stack connection.
See Figure A for an example. If this is not
possible or desirable in your application, a
vent flange or grommet can be installed in
a hole cut into the solid fiberglass cover.
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 or alarm 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 EPS is commonly supplied with a control panel that will either use float switches or a
pressure transducer to detect the water level in the basin. 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, but may need to be modified depending on the depth in which the inlet hub is installed. 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 pump and control panel manual.
Figure A – Inlet Venting