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4. Pre-installation requirements
4.1.
Make sure the following pre-installation requirements are met before unpacking and
installing the unit.
Table 2. Input water requirements.
Type of feedwater
Potable
Minimum pressure
≥ 0.5 bar
Maximum pressure
≤ 5 bar
Conductivity
< 1300 µS/cm
Temperature
5 ... 35°C
pH
4 ... 10
Fouling Index
< 10
Iron
< 0.1 ppm as CaCO
3
Aluminium
< 0.05 ppm as CaCO
3
Manganese
< 0.05 ppm as CaCO
3
Free chlorine
< 1 ppm
Langelier saturation index
< +0.2
TOC
< 2000 ppb
Water access connections
½" male NPTF
4.2.
Filter and soften feedwater with polyphosphate-
carbon 1 μm particle filter. If the filter
is not installed, pre-filter in the unit will clog and block the water flow. There must be
at least one filter on the feedwater access pipe. Filter is available in the local plumber
shops or by ordering at Biosan.
Figure 4. Filter on the water access pipe.
4.3.
Water access connection.
4.3.1. Feedwater hardness affects water-cleaning quality. Using hard feedwater may result
in premature clogging of reverse osmosis membranes and reduced Grade II or Grade
I water output.
Attention
Therefore, we strongly recommend installing a water softener or a
polyphosphate particle filter if water hardness is above 160 ppm.
4.4.
Feedwater connection port has to
be ½" NPTF male thread. The system is equipped
with feedwater tube (¼" outer diameter) and a ½" NPTF female adapter for water
supply connection. The feedwater tube should be connected to the ¼" John Guest
adapter in the unit. Feedwater connection pipe must have a valve to allow closing off
water supply.
