Thermo Scientific 50135178, Operating Instructions Manual

Page: 18 / 55

T Thermo Fisher Barnstead Pacific AFT
Pure water system
18
Your purified water system is equipped with automatic flushing. Flushing is carried out when the
system is switched on, when production is stopped, and every 12 hours. Solenoid valve V4 is
opened and the strong inflow of water across the reverse osmosis module flushes coarse
particles and other contaminants away from the surface of the membranes and carries them
with it to drain.
Automatic flushing has a positive effect on the service life of the reverse osmosis module.
An additional advantage of automatic flushing is that it prevents bacterial growth from occurring
in the reverse osmosis module when the system is at a standstill for a length of time. For this
reason, we highly recommend that you leave the system switched on over the weekend and
during holiday times, so that the 12 hour flush can effectively guard against bacterial growth.
10. Installation location
The following criteria must be considered when choosing the installation area:
 Minimum temperature at the installation area, +2°C to +35°C.
 The standing surface or the wall where the system is to be stood or mounted must
have sufficient weight-bearing capacity (see Technical specifications for weight)
 A floor drain with a DN 50 (38,5 mm ID) waste pipe is required. Should this not be
available, then a water watcher (article no.: 16.0129) must be installed to guard
against water damage!
 An unrestricted gravity fall of concentrate to the floor drain must be ensured.
 An electrical socket appropriate to the voltage given on the type plate of the system
must be available near to the system. The safety fuse must be appropriate to the
power required (see Technical specifications).
 Position the system so that there is no difficulty in separating the device from the
electric mains.
 There must be sufficient working room around the system.
 A male R 3/4” feedwater connection that can be turned off must be installed in the
direct vicinity of the system.

A wastewater connection must be available in the direct vicinity of the system.