Liberty Pumps Ascent II - Manual (Page 17)

©Copyright 2013 Liberty Pumps Inc. All rights reserved. 17
Air lock
The volute has a passage-way to allow trapped air to
escape. This passage-way must be cleaned of
obstruction
Application
The pumping capacity has been exceeded by the rate of
incoming water. Either reduce flow coming into the
macerator or reduce the pumping head.
Water backs up into shower tray
 Alarm is not activated
General plumbing
Blockage or inadequate slope of pipe
Clear blockage in piping, or increase pitch of discharge
pipe. Typically ¼” drop per foot is adequate for a gravity
drain.
The inlet flappers of the Macerator are
not functioning
Clear any buildup in the Macerator holding tank that is
preventing the flappers from opening
Water backs up into shower tray
 Alarm is activated
General plumbing or system is backing up
Damaged Impeller Replace impeller
Volute inlet clogged Clean volute’s inlet
Internal hose is damaged
Confirm the internal hose is functioning properly; if not it
must be replaced.
Air lock
The volute has a passage way to allow trapped air to
escape, this passage way must be cleaned of
obstruction
Incoming flow rate is greater than
pump capacity
The unit is capable of handling up to two shower heads
– multiple (3 and up) shower heads should be avoided.
Check valve failure of the Macerator
The discharge flange contains the check valve which
either requires cleaning or replacement
During the draining of the bathtub the alarm
sounds and / or water backs up into the toilet
General plumbing
The inflow is greater than the
macerator can handle
A ball valve should be installed between the tub and
macerator – throttle down or partially close the ball valve
until the macerator can handle the drainage rate from
the tub.
Macerator is noisy when running General plumbing
Rattling piping
Both the discharge and vent plumbing should be
secured using the appropriate pipe clamp.
Foreign object in cutter basket
The access cover should be removed for manual
cleaning see section 4