Rev: 09.2017
EBS Pre-Engineered Skid IOM
6
Stages of cleaning cycle:
Under normal operating condition the electrical control panel operates the "EBS" filter in the following manner;
1. The exhaust valve opens to atmosphere.
2. Five seconds delay.
3. The motor starts rotating the suction scanner shaft upward until it reaches the upper limit switch.
4. The exhaust valve closes.
5. Two seconds delay.
6. The motor starts rotating the suction shaft downward until it reaches the lower limit switch.
INSTALLATION
Design recommendations
1.
If flow increases and pressure drops dramatically for a long period of time during network filling-up, it is
recommended that a pressure sustaining valve is installed downstream of the filter. The pressure
sustaining valve will ensure a controlled filling-up of the line.
2.
If continual water flow is essential even during maintenance period, it is recommended that a manual or
automatic by-pass is installed, and the isolating valves will be used to isolate each filter.
3.
In places where there is an expected temporary worsening of water quality, it is possible to operate an
emergency flushing program. In order to do so, a hydraulic controlled valve has to be installed downstream
of the filter. For details, please consult the manufacturer.
Installation instructions
1.
Before beginning the installation process, carefully read the safety instructions in chapter 2 of this
document and make sure that all the workers at the installation site are fully aware of and comply with,
these and any other local safety instructions.
2.
Select a convenient location for the installation of the filter where operation and maintenance will be
optimal. It is recommended that a standard and safe lifting auxiliary is available for maintenance.
3.
Install the filter vertically. Please note that a minimum clearance of 300 mm (12 In.) (Not including a
crane) is required in order to allow disassembly of the unit.
4.
Ensure that the direction of flow is aligned with the arrows marked on the filter housing. (Flow outlet will
always be from the side; flow inlet is from the bottom).
5.
Installation of a mechanical non-return valve downstream of the filter is required.
6.
If possible, prior to installing the filter, thoroughly flush the main line at the connection point in order to
remove large objects that may damage the filter’s internal mechanism.
7.
Install a drainage pipe to the exhaust valve. Minimum 3" diameter for a maximum pipe length of 20
meters (60 feet), for longer drainage, 4" pipe diameter must be used for a maximum length of 40 meters
(120 feet). Please note that no restriction is allowed on the drainage pipe. For special applications, please
consult the manufacturer.
8.
The user should arrange suitable lighting in the vicinity of the filter to enable good visibility and safe
maintenance.
9.
The user should arrange suitable platforms and safety barriers to enable easy access to the filter without
climbing on pipes and other equipment. All such equipment should comply with the safety clauses of the
relevant local standards.
IMPORTANT!!
¨
Prevent static backpressure or reverse flow through the filter.
¨
Install a non-return valve at the outlet of the filter.
¨
Install a manual or a hydraulic valve downstream of the filter.