Meyer C Series, Руководство пользователя, Страница: 5 / 20

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Double Flapgate Valves are sometimes customized to suit specific customer applications. This means
some of the components may be supplied by others and need to be installed on the valves.
Therefore, the installation and operating procedures for your equipment may vary from the
descriptions in this manual. When installing the equipment, refer to relevant information supplied by
others. These basic installation instructions apply to the HPSC & HPTC and to the LPTF versions.
PNEUMATICALLY OPERATED DOUBLE FLAPGATES
1. If a pre-piped and mounted pneumatic air set is provided, the first step is to connect the dry
compressed air to the air set.
2. If a pre-piped air set is not provided, the installer needs to install the components necessary for
controlling the cylinders.
3. The recommended regulator inlet air supply is 80 to 120 psig. The regulator outlet pressure is
typically set at 60 to 80 psig. Operating the gates below 30 psig is not recommended.
4. Make certain no air is leaking from connections and pneumatic components.
5. If the solenoid was supplied as part of the air set, it will already be connected to the
filter regulator, if not those connections will need to be made at this time .
6. Connect the solenoid to the timer box and then connect the electric power to the timer box.
Refer to the solenoid vendor information for specific details. Note: There are a number of
solenoids that are used with the Double Flapgate Airlock Valves, therefore specific connection
details are not part of this manual.
7. There are two flow control valves on each solenoid of the Double Flapgate Valves. These are
factory set and typically require no adjustment.
8. Position switches may be provided to indicate whether the flap gate is open or closed. These
will need to be wired to power and control circuits. Refer to the switch vendor information for
instructions.
There may be additional custom devices supplied with the valves. Refer to the appropriate vendor
information for installation instructions. The pneumatically controlled Double Flapgate Airlock Valve
is now ready for startup. See the appropriate section for instructions.
ELECTRO-MECHANICAL DOUBLE FLAPGATE INSTALLATION
1. These Double Flaps use a motor to drive the actuation sequence. Electrical connections must be
done by a qualified electrician, in accordance with applicable codes and standards. Standard
rotation for the electric motor is counter-clockwise as viewed from the fan end. Rotation should
only be checked after proper guarding has been completed. There is a directional arrow on the
cam which indicates clockwise rotation. In order to check for the proper rotation, look through
the expanded metal guard, use a light if needed, so that you can see what direction the cam is
turning. “Bump Start” the motor and check for proper rotation.
2. In some cases, a motion or proximity switch may be provided. These switches indicate that the
gates are moving/shafts are turning. Refer to vendor information for wiring and installation
instructions (if not already installed).
3. A guard is provided around the rotating drive parts and must be in place during operation.
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Guarding discharge
As a courtesy, the Double Flapgate is shipped with an attached discharge flange guard. This guard
should not be removed and should remain in place during operation. However, due to the vast
number of potential applications in which the valves can be used, it is neither feasible nor practical for
Meyer to supply a discharge guard which will be effective in every possible application or process. If
the supplied discharge flange guard does not work for your specific application or process, alternative
suitable guarding
must
be utilized to ensure safe operation. “Alternative suitable guarding” could be
another piece of equipment, chute, bin or custom discharge guard. It is imperative that the valve
should not be operated without the discharge opening fully guarded such that no contact can be
made with the moving parts inside of the equipment. It remains the owner/operator’s responsibility to
ensure that the Double Flapgate is safely integrated for the particular process and application for
which it was purchased and that the discharge opening remains guarded at all times during operation.
Guarding inlet
In most applications, the Double Flapgate Airlock Valve will be integrated into a process, system or
application where the inlet opening of the valve will be guarded by virtue of being attached to another
piece of equipment (bin, hopper, etc.) However, there may be instances or situations where the inlet
of the valve becomes accessible (i.e. through a clean out door or access hatch on the attached
equipment) to a user. As noted above, due to the vast number of potential applications in which a
Double Flapgate Airlock Valve may be used, it is neither feasible nor practical for Meyer to design or
supply an inlet flange guard that will work for every possible application or process. It is the
owner/operator’s responsibility to ensure that the valve is safely integrated for the particular process
and application for which it was purchased and that the inlet opening remains guarded at all times
during operation.
Isolating Energy with Vented Isolation Valve
Even if all sources of energy are locked out, the air-operated units may have residual air pressure in
the actuator. This air pressure must be relieved and further pressurizing of the actuator must be
blocked in order for the Double Flapgate to be considered at “Zero Energy State” and comply with
Lockout/Tagout. The lockable in-line vented isolation valve included with the controls must be closed
and locked for this equipment to be deemed safe to service or maintain. To do this: close the valve,
slide the locking tab into position, and then secure the tab with the proper Lockout/Tagout device.
Training
The owner also bears the responsibility to ensure that personnel who may be working around a Double
Flapgate are properly trained. Personnel must be aware that: (1) anything coming into contact with the
moving plate
will
be cut off/amputated; (2) Double Flapgate valves can start without warning; (3)
before working on, cleaning, repairing or maintaining a Double Flapgate valve, Lockout/Tagout
procedures must be strictly followed; and (4) valves must not be operated without guarding in place.
Before working around a Double Flapgate valve, personnel must read the Operator’s Manual.
SAFETY LABELING
The safety labels shown are affixed to your Double Flapgate Airlock Valve. A Safety Supplement
Datasheet has been packed with your equipment at the time of shipment. Because Double Flapgates
can be used in a vast number of applications and in a number of configurations, it is possible that the