BIRM Series Filter
Installation Operation Maintenance Manual
BIRM WS1 NOV 2007 \page 9
5.0
PRE-INSTALLATION CHECKS
5.1
MECHANICAL
5.1.1 Foundation/Drainage
The filter will not require any special foundations, provided that a firm, level
area, which is capable of supporting the working weight, is available. (See
Engineering Data, Section 11.2)
Unwanted water from the backwash process must flow to drain, and so an
open drain or gully, capable of passing the necessary flow is required (see
Process and Operating Data, 11.1, for relevant flows). The total flow of
water to drain depends on site conditions, but will be at least the same as the
service flow. Preferably the drain should be level but no higher than 500mm
above the filter valve.
5.1.2 Operating Space
The space occupied by the filter can be found in the Engineering Data (Section
11 .2).
Access will be required to carry out adjustments or maintenance on the
equipment. It is therefore recommended that a minimum of 500mm clearance
be allowed around the unit for this purpose.
5.1.3 Incoming Water
The raw water to be fed to the filter must comply with the following:-
1.
Maximum iron level = 5ppm
2.
pH range = 6.0-9.0
3.
Organic matter = less than 2ppm
4.
Free chlorine = less than 0.5ppm
5.
Chloride below 100 ppm
6.
Temperature = 3 - 45
C (35 - 110
F)
7.
No Oil or Polyphosphates
8.
Backwash flow rate must be twice the same as the service
flow rate available with a pressure of 3 bar
