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S10/S40 Spiral Cartridges Installation Guide 17
S40/S120: Integrity Testing
These instructions may be used for integrity testing either a single S40 cartridge in
an S40 housing or three S40 cartridges in an S120 housing. Figure 5 shows the
configuration for integrity testing a spiral cartridge (or cartridge assembly).
Feed
line
Cartridge, installed
Gas supply
Retentate line
Permeate line
Permeate pressure
gauge
Back-pressure valve
Permeate
port valve
Feed pressure gauge
Figure 5. Configuration for Integrity Testing a Spiral Cartridge
1. Drain the plumbing of water. To remove any residual water, purge with
filtered nitrogen or clean, dry air at 1–2 psi (0.07–0.14 bar), if necessary.
2. Attach a regulated and filtered supply of nitrogen or clean, dry air to the feed
side of the cartridge housing.
3. Isolate the retentate manifold by closing the back-pressure valve. The
permeate port valve should be open.
4. Slowly raise the gas pressure to the value recommended for your cartridge
type, as shown in Table 2.
Table 2. Integrity Test Specifications for S40 and S120
Gas Flow Rate
Catalogue Test Pressure cc/min
Number psig (bar) S40 S120
CDUF040LC 10 (0.7) ≤ 240 ≤ 720
CDUF040LG 5 (0.35) ≤ 240 ≤ 720
CDUF040LT 5 (0.35) ≤ 600 ≤ 1800
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