K-Patents DD-23 - Manual (Page 24)

20
The recommended wash pressures and times are given in the table below..
Wash parameters for Safe-Drive™ Isolation valve nozzle SDI
Minimum above
process pressure
Maximum above
process pressure
Wash
time
Reco-
very
Interval
Steam (SN) 5 bar (70 psi) 8 bar (115 psi) 3–5 s 20–30 s 20–30 min
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.
It should be noted that if wash check is enabled on the instrument it can cause the
instrument to be taken out of divert use if during the set wash tolerance time no wash
cycles have been noted as successful. This can cause a divert if both instruments fail
wash checks in sequence.