MOLLET SFA-Q Silo Filling Device with Pinch Valve Instruction Manual

: June 8, 2024
: MOLLET

Table of Contents

MOLLET SFA-Q Silo Filling Device with Pinch Valve
Safety instructions
OPERATING INSTRUCTION
Technical data
General instructions
Maintenance and servicing
Spare parts
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MOLLET SFA-Q Silo Filling Device with Pinch Valve

Safety instructions

The installation, maintenance, initial operation, removal and repair has to be carried out by qualified experts with knowledge about electrical equipment and know-how about handling of pressure equipment and pneumatic pressure units.
The statutory and other applicable regulations and standards have to be noticed and kept.
Comply with the specifications on the data plate.
The pressure and temperature details given by the data plate have to be kept.
A fuse (with max. 4 A) has to be connected in series to the supply voltage of the control valve.
A pressure-reducing valve has to be installed in the control pressure supply line and it has to be set at the given control pressure.
The process pressure (delivery pressure) and the control pressure given by the type plate must not be exceeded.
Initial operation and pressure admission only when the silo flling device is completely installed.
When the silo filling device is damaged the compressed air and voltage supply has to be shut off immediately and it is to released from any pressure e.g. by removal of the control medium conveying line.
Any work at the filling device has to be carried out in pressure-free and de-energized condition only.
Read and follow the attached safety instructions for the single units.
By usage in explosive hazardous areas read and follow the enclosed safety instructions of the operating instructions and the explosive protection informations of the single units.
All product touching parts have to be made of stainless-steel if
rust-containing particles (like rust film) are existent in the conveying medium and a gaseous explosive atmosphere is conveyed.
combustible dusts with a minimum ignition energy less than 3 mJ or with a minimum ignition temperature below +300 °C (BAM procedure) are conveyed.

OPERATING INSTRUCTION

Extent of delivery is depending on the choice of options.
Intended use
The device is to be mounted at the filing pipe of silos, which were filled pneumatically by a silo vehicle, to connect the filing hose, for contacting and to shut-off the filling pipe. In its capacity as part of the silo filling device, the pinch valve is designed, build and approved as a ,pressure- maintaining component” in accordance to the Pressure Equipment Directive 2014/68/EU.
Function
The swivelling lever has to be swivelled aside to connect the filling hose to the coupling. Ihe limit switch, which is integrated in the swivelling lever, signalizes to the control unit that a hose has been attached. The pinch valve will be actuated by compressed air via a control valve (Solenoid valve). The pinch valve is closed when de- energized.

Technical data

Manufacturer

MOLLET
Füllstandtechnik GmbH
Address Industriepark RIO 103 74706 Osterburken
Name Silo filling device
Type SFA-Q.
Process temperatureceSs) )-25 °C+80 °C T(Process).
Ambient temperature Ta -20°C.+40°C Supply voltage
Control valve last digit
Control valve last digit 2
230 V AC 50… 60 Hz 24 V DC
Control valve last digit3 24 VAC
Signal contact of the swivelling lever
Switching ability ntac appendixes to the see type plate and
Switching voltage Contact operating instructions
Type of protection
IP IP65 according to DIN EN 60529
Process Delivery air pressure pressurencess) p(Pr 2.0 bar .. 2.5 bar
Control pressure 4.5 bar .. 5.0 bar
Compressed air, oil and water-free
DNO65 DNO80 DN100
Weight 15.0 kg 15.5 kg 19.8 kg completely assembled
Mounting position vertical to horizontal

Materials

depending on choice of option Housing
Clamping sleeves Hose NR Hose NW Hose NRE
Pinch valve Aluminium
Aluminium or stainless steel
Caoutchouc, resistant to abrasion,
Caoutchouc, inside white for food
Caoutchouc contuctible, (for ATEX valves)
Protection tube
Steel, galvanized or stainless steel
Swivelling lever
Steel, galvanized
Connection coupling
Aluminium or stainless steel

Continuation installation

Mechanical connections
Push the weld-on flange on the tube.

Adjust the boreholes of the flange as shown here and weld the flange in this position.
Put the sealing at the flange of the silo filling device and fasten it on in such way that, if a wall is behind it, the swivelling lever points to the right, to the left or to the front or, it no obstacle is present, backwards.
In case of slanting or horizontal pipe the silo filling device has to be mounted always on the upper SIde, the lever must fal into the final position by ist own weight.
The swivelling lever has to swivel freely.

Compressed air connection

Connect the control valve with the oil and water-free compressed air supply bya weather-resisting hose.
Adjust the pressure reducing valve at 4.5 bar …5.0 bar.

Electrical connection

Connect the control valve with the control cabinet according to the local and statutory rules and regulations.
Subsequently connect the cable of the swivelling lever with limit switch with the assigned terminal of the control cabinet.

Circuit diagram and function diagram

General instructions

The silo flling device with its equipment may be operated and monitored by expert and instructed personnel only so that employees and other persons will not be brought in danger.
The operating instructions with the safety instructions have to be available to the operating and maintenance personnel.
In its capacity as part of the silo filling device, the pinch valve is a ,pressure-maintaining component” in the meaning of the
Pressure Equipment Directive 2014/68/EU. Therefore take care of the country of installation’s national regulations about the operation of pressure equipment.

Putting into operation

Put the silo filing device in operation only when:
The silo flling device is fix connected with the flling pipe, a pressure reducing valve is mounted at the compressed supply pipe and the control pressure is adjusted,
the electrical connections are done correctly and
the swivelling lever can swivel freely, the connecting cable is laid out flexible and can’t be damaged by the motion.

Inexpert handling

Ignoring the safety instructions and the operating instructions.
Not intended use.
Operating of the pinch valve by personnel which is not authorized or not proper instructed.
Mounting of spare parts which are no original parts.
Violation against applicable law and standards.

Maintenance and servicing

General information

Carry out maintenance and repair work only when the siloflling device is disconnected from the control pressure and voltage supply lines and released from any pressure.
lf it’s to reckon with the exhaust of hazardous substances during the maintenance special protection measures (e.g. personal protection equipment) are necessary.

Maintenance

Inspect in regular intervals:
The correct pre-set of the pressure-reducing valve in the compressed air supply line, the hose of the pinch valve for tear and wear,
all connections and joints for tight fit,
the swivelling lever with limit switch for freedom of movement.
Schedule the inspection intervals according to
the kind of material which has to be shut off and it’s abrasiveness, the frequency of use but at least once a year

Disposal

The silo filing device can be recycled.
The disposal applies to the valid environmental guidelines according to the location of the carrier and the local manufacturing conditions.