Liberty Pumps Pro680 Series Installation Manual page 6

Electrical Connections
With main power disconnected, complete pump and control
wiring connections per manufacturer's wiring diagrams included
with the control panel as applicable. Check all wires for
unintentional grounds after the connections are made.
Discharge
 ProVore 680 and 1100-Series grinder systems are supplied
with dual 2" discharge outlets. Do not increase the pipe size
above 2" as adequate flow rates may not be achieved for
proper operation. Discharge size can be reduced to 1-1/4".
 Pro680 and 1100-Series non-grinder systems: discharge
size must not be smaller than 2".
Using an adapter, connect the discharge pipe to the threaded 2"
or 3" port provided on the cover. Install the remaining discharge
line. A union should be installed just above the cover to facilitate
pump removal. A check valve is required after the union to
prevent the backflow of liquid after each pumping cycle. A gate or
ball valve should follow the check valve to allow periodic cleaning
of the check valve or removal of the pump. The remainder of the
discharge line should be as short as possible with a minimum
number of turns, to minimize friction head loss. Contact Liberty
Pumps or other qualified person if there are questions regarding
proper pipe size and flow rates.
Vent
A 2" or 3" vent connection is provided on top of the 1100-Series
unit. The P680-Series vent is on top of the tank. The vent must be
piped to the existing building vent, or extended outside on its
own standpipe. The vent size must be in accordance with
applicable codes, but not less than the discharge size.
Inlet
Connect the inlet line to the inlet hub per engineer's specifications.
1100-Series basins use a hub with a 4" seal for inlet connection.
Access Cover and Float Switch Control
Pro680-Series
Liberty Pumps Pro680-Series systems feature QuickTree
technology. The QuickTree float system uses a stainless steel
mounting rod (tree) and specially designed cord clamping
brackets to affix the pump floats in the system. All floats are
preset at the factory at optimum operating levels and should
not be adjusted. Field adjusting floats may cause improper
activation or turn-off of the pump and optional alarm.
6 | EN
QuickTree removal and float inspection
The QuickTree system is located under the separate access cover
to help ease inspection, service, and replacement of a float. To
inspect the floats, simply unbolt the access cover and lift out the
QuickTree assembly from its holder. There is no need to
disconnect plumbing or remove the pump. Pro680-Series systems
feature a manual pump (with no switch attached directly to the
pump). Operation of the pump is accomplished by the QuickTree
system.
Re-inserting the QuickTree
After service or inspection of the floats, re-insert the QuickTree
into its holder. It is important that cords from the pump motors
and float switch, and optional alarm float are properly sealed in
the specially designed rubber sealing channels under the access
cover. Proper sealing is required to keep sewer gas from leaking
from the system. Place the cords securely in the rubber channels
as shown in Figure 3 [left], being careful to remove excessive cord
"slack" from inside the system.
IMPORTANT: Three cord channels are provided. For systems
without the alarm option, only two channels are used and the
third must be "plugged" with an attached rubber plug seal. See
Figure 3 [right]. If the alarm cord is present, all three channels will
be used. All rubber cover gaskets are permanently attached and
do not require replacement.
Re-securing the Access Cover
Tighten/torque the access cover in the following sequence. With
the imprinted "cord seal" on the left, tighten the two bolts furthest
away (furthest to the right), the two middle bolts next, and the two
closest bolts last. Torque each bolt to 40 in-lbs.
QuickTree Settings
When servicing the QuickTree, place the switch cord into the
trough or channel and then slip the stainless steel rod through the
clamp. Tighten the screw with a Phillips screwdriver, being careful
not to over-tighten. Flats have been stamped on the rod to
designate float position, and the screw should be tightened onto
the flat. Tether length is the amount of cord between the clamp
and float.
Tether Length (Switch Position to Clamp)
Rod Position
Copyright © Liberty Pumps, Inc. 2023 All rights reserved.
Figure 3. Proper Cord Sealing Behind QuickTree Rod
Alarm Float
1 3.5"
2
3
4
rubber plug seal
Pump Control Float
3"
8337000L