The following tables provide the recommended wash pressures and times.
Table 1. Wash medium parameters for integral wash nozzles in PR-43-AP
|
Min. above process pressure |
Max. above process pressure |
Wash time |
Recovery |
Interval |
| Steam (SN) |
2 bar (30 psi) |
4 bar (60 psi) |
3 s |
20 ‑ 30 s |
20 ‑ 30 min |
| Water (WN) |
2 bar (30 psi) |
4 bar (60 psi) |
10 s |
20 ‑ 30 s |
10 ‑ 20 min |
| High pressure water (WP) |
15 bar (220 psi) |
40 bar (600 psi) |
10 s |
20 ‑ 30 s |
10 ‑ 20 min |
Table 2. Wash medium parameters for flow cell
wash nozzle AFC
|
Min. above process pressure |
Max. above process pressure |
Wash time |
Recovery |
Interval |
| Steam (SN) |
3 bar (45 psi) |
6 bar (90 psi) |
3 ‑ 5 s |
20 ‑ 30 s |
20 ‑ 30 min |
| Water (WN) |
3 bar (45 psi) |
6 bar (90 psi) |
10 ‑ 15 s |
20 ‑ 30 s |
10 ‑ 20 min |
| High pressure water (WP) |
25 bar (350 psi) |
35 bar (500 psi) |
10 ‑ 15 s |
20 ‑ 30 s |
10 ‑ 20 min |
| CAUTION In steam wash, do not exceed the recommended wash times, because some
process media may burn to the prism surface if steamed for longer time. In case of coating,
shorten the wash interval. |
| In water wash, water temperature should be above the process
temperature. |
| The check valve pressure drop is 0.7 bar (10 psi). |