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MAINTENANCE
For optimal performance, keep spare parts on hand. Replace
at the first sign of wear or if you pump less milk than expected.
It is normal for pump parts to lose elasticity and wear over time
with use, washing, and sanitizing. Here is a guide for pump
maintenance.
Breast Pump Part Replacement Guide
Part
Pumping for occasional use (see PAGE 1)
Membrane
Diaphragm
Valve, and flange (hard,
non-moving pieces)
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USA/Canada: 1-855-EFI-BABY (334-2229) • www.evenflofeeding.com
2-3 months
3-6 months
6 months
Problem
Possible Cause
Diaphragm is damaged
or worn
Valve not assembled to
flange
Membrane worn, torn or
not assembled to valve
Dried milk in pump
Little to no
Membrane not sealing
suction
Flange insert not fully
seated into flange
Poor seal between breast
and flange
Suction strength too low
Groove on back of handle
is not attached to pin
Handle is not attached to
diaphragm stem
Pump handle
not moving
properly
Warped handle
Dried milk or debris on
handle or exterior pump
parts
Suction strength too high
Discomfort
Using incorrect flange size
Continued on next page...
USA/Canada: 1-855-EFI-BABY (334-2229) • www.evenflofeeding.com
Troubleshooting
Action
Check diaphragm for signs of wear, holes,
cracks, etc. Replace damaged components.
Attach the valve firmly to flange (Page 64.
Replace membrane or ensure that it is
connected properly to the valve (Page 4).
Follow cleaning instructions (Page 8). Pay
extra attention to the valve and membrane.
Make sure valve and membrane are clean,
with no debris on the surface of the seal.
Make sure membrane lies flat against the
surface of the valve (Page 4).
Properly install flange insert (Page 5).
Reposition the flange to get a better seal.
Make sure flange seals directly onto breast
with no clothing between breast and flange.
(Page 7).
To increase suction, squeeze handle more
fully.
Align groove on underside of handle with pin
on diaphragm cap and push downward to
snap into place (PAGE 5).
Insert handle in a scooping motion around
middle of stem (PAGE 5).
Contact Consumer Care to purchase new handle.
Handle can only be wiped with a clean cloth.
Clean pump handle and parts according to
directions (pAGE 8).
Do not squeeze the handle completely. Only
squeeze to your desired suction strength.
Using a flange that is too small or too large
can cause discomfort. See Flange Sizing
(Page 6).
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