General
Read Operation instructions before commissioning (sent by e-mail to system integrator / end user).
The rotary valves must not be put into service until the equipment into which they have been incorporated have
been declared in conformity with the Machinery Directive.
Transport
Use adequate transport and lifting equipment.
Installation and assembly
Only competent persons are allowed to maintain the valve.
Electrical parts must be connected by a qualified specialist.
When product qualities necessitate supplementary safety instructions and wearing protective equipment, it is
obligatory to follow the local safety instructions.
Check the valve externally for damage and internally for foreign objects.
Explosion-Proof Rotary valves
- Check if the information on the nameplate of the Rotary valve corresponds with the potentially
explosive on-site atmosphere.
- If the valve is a flame barrier, the transport of burning or smouldering product over
the rotary valve must be prevented.
- Make sure that a sensor and control unit are installed in the system to stop the valve.
- Check rotor clearances.
The rotary valve is intended to be incorporated into or assembled with other machinery or equipment.
- Installation in fully enclosed pipe work. When installed the pipe work will prevent access to the moving
parts.
- The valve must not be used if either connection remains unconnected.
The rotary valve contains moving parts that can be injurious. It is the responsibility of the system integrator
/ end user to ensure the safe installation and operation of the valve.
In particular it must be adequately protected and guarded, in compliance with local health and safety
regulations.
When installing the valve make sure it is not unevenly loaded by external forces or vibrations.
The chain drive must be protected by a guard.
The T-bolt switch must be connected to the client safety circuit, which will stop or prevent the valve from
operating. (MZC execution)
The safety switch must be connected to the client safety circuit, which will stop or prevent the valve from
operating. (option)
Start up and operation
Check the rotating direction of the valve rotor. It should rotate clockwise seen from the drive end (see direction
of the arrow).
Check the voltage of the electrical parts.
Check the shaft seal and air purge pressure, if applicable.
Remove the plug that is fitted for transportation purposes from the gear box, if applicable.
Maintenance
While the valve is in operation no maintenance or repair work must be carried out.
The motor must be isolated before disassembly, cleaning or maintenance is carried out.
DMN-WESTINGHOUSE Rotary valves 12-2009
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