Installation, Operation & Maintenance Manual
IP262/Z0, Rev. AB
February 2012 | MSL600 |
Finally, sections 9 to 13 cover maintenance, troubleshooting, programming chart, technical specifications and dimension drawings relevant to using the MSL600 system.
1.3 Important MSL600 features
The MSL600 system incorporates several unique design features which are intended to promote trouble free operation, give a degree of installation flexibility, and allow ease of installation.
1.3.1Human Machine Interface
In common with other Mobrey Measurement control units, the MSL600 makes use of the Mobrey Measurement Human Machine Interface (HMI). The HMI reflects comments and suggestions received about the need to be easy and intuitive to use. The intention is that you should be able to program and interrogate the system using the integral membrane keypad and Liquid Crystal Display (LCD) without the need for regular reference to this manual. For the more experienced user, the HMI also facilitates rapid navigation of the menu structure to system parameters.
1.3.2Self-cleaning
One of the most important features of the MSL600 is its transducer
In the application for which the system is designed, the transducer is normally mounted in a relatively hostile environment. In this environment, the likelihood of the transducer becoming coated or otherwise fouled is relatively high. A fouled transducer is far less efficient at transmitting sonar pulses into the supernatant. Without the ability to automatically clean itself, the transducer maintenance cycle would need to be more regular, and thus increase the life cost of the system.
Experience suggests that any moving mechanical cleaning devices are themselves prone to fouling. It is for this reason that the MSL600 uses an air purge cleaning function. Extensive experimental results show that this method is extremely effective in keeping the face of the transducer free from any coating growth or
The cleaning cycle is optimised for maximum efficiency. However, you can manually initiate a cleaning cycle or override this feature by turning it off.
1.3.3Mounting bracket
Most clarifier tanks have railings on the walkway, rotating or moving bridge or walkway. It is recommended that the MSL600 be mounted on these railings. The MSL600 system is supplied with a purpose designed mounting bracket. This bracket design has been optimised to fit most designs of railing. This is intended to provide alignment and a stable platform for the transducer and control unit.
The transducer and mounting bracket, collectively known as an MSL603, are intended to be fitted to the clarifier before the MSL600 control unit is attached to them. This allows mechanical adjustment and fitting without the need to worry about the electronics in the enclosure.
The transducer mounting arrangement is hinged so that the transducer can be lifted out of the water, using the chain provided, for ease of maintenance (in most cases this will not be necessary because the transducer is self- cleaning). When installed, the transducer front face should be continually immersed in water to a depth of approximately 75mm (3 inches). The MSL600 mounting bracket should allow sufficient adjustment for this in most cases. Extensions and extra tubes are readily available from a number of sources to allow the mounting to be modified – contact Mobrey Measurement Sales for assistance (see section 3.3.3 for other sources).
Note:
The MSL603 transducer can also be supplied without mounting hardware and is supplied complete with
10 metres (33 feet) of connecting cable and air hose for the
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