Better Water LLC; rev. Apr 2015
Page 12 of 22
4” x 40” Ultra Filter System Operator Manual
SYSTEM MAINTENANCE: Changing the Membranes
Better Water LLC recommends that the membranes be changed
every 3 years
, unless otherwise
dictated by, bacteria/endotoxin testing, and/or higher Delta-P pressure across the system.
Before starting you will need the following:
a.
tee-handle removal tool
d.
Teflon tape
b.
medical grade glycerin (
water soluble
)
e.
sterile gloves
c.
Teflon enriched tape thread sealant
1.
Start with all valves, sample ports, and drain ports closed.
2.
Open either the reject valve or sanitary sample port to
relieve the pressure.
3.
Remove the u-pin from the top end-cap.
4.
Using a tee-handle removal tool remove the top end-cap
from the housing by screwing the tool into the end-cap until
snug and then pull up.
5.
Remove membrane and adapters.
6.
Remove u-pin from the lower part of the housing.
7.
Loosen all unions on the product header.
8.
Remove each product union assembly from each end-cap.
9.
Using the tee-handle removal tool to remove the bottom
bottom end-cap.
10.
Replace inner end-cap o-rings for both end-caps and
lubricate with medical grade glycerin.
11.
Wearing sterile gloves, remove the new membrane from
the box.
12.
Prepare the adapters by ensuring that the o-rings are in place and lubricated,
and place onto membrane ends.
13.
Reinstall bottom end-cap and reinsert u-pin.
14.
Place membrane with adapters into housing and reinstall top end-cap and u-pin.
15.
Re-tape each product union assembly with about 6 wraps of Teflon tape and then apply
Teflon enriched tape thread sealant and re-install.
16.
Open inlet and outlet water valves, and run product water to drain (
not to reservoir
) for two
hours, and check for leaks.
17.
Perform a disinfect.
18.
Membranes are now on-line and ready for use.
