MOLLET MSD Silo Pressure Detector Instructions

Table of Contents

Read and follow these safety instructions first and take notice of the operating instructions.

The installation, initial operation, and maintenance may be done by a qualified expert with electrical know-how only.
Comply with the local and statutory rules and regulations and/or the VDE 0100.
Take notice of the temperature specifications on the data plate.
A fuse (with max. 4A) has to be connected upstream in series to the signal contact.
Protect the signal contacts from voltage peaks when inductive loads are connected.
The device may be put into operation if it is closed, only.
Switch off the power supply, before opening the device. (touch dangerous voltage)
Attention safety device! Don´t modify anything at the device or at the switching point adjusting!

Intended use
The pressure detector controls as a limit switch the overpressure in silos and vessels.

Function
If the pressure reaches the switching point SP, the pressure detector will give a signal.

Manufacturer MOLLET Füllstandtechnik GmbH
Address Industriepark RIO 103 74706 Osterburken
Name Silo pressure detector
Type MSD-070
Bulk good temperature -25 °C … +80 °C
Ambient temperature -20 °C … +70 °C
Signal contact change-over contact, potential free
The capacity of the contact 4 A / 250 V AC
- Switching voltage 24 V … 250 V AC **** or 12 V … 125 V DC
Switching point 40 mbar = 0.04 bar = 400 mm WS
Overpressure safety up to 0.5 bar
Cable connection Screw M4
Cable entry Cable gland M20x1.5
Type of protection IP65 acc. to DIN EN 60529
Weight 1.1 kg
Maintenance none
Mounting position vertical, ± 5° inclination

Material

$MOLLET-MSD-Silo-Pressure-Detector-fig- $1$$

Check the membrane of visual transport damage.
Read and follow the safety instructions and the operating instructions, before handling the device!

Mounting in the vessel

Weld the flange socket (as an option) vertically (Flange is horizontal) in the silo top.
Position the pressure detector (Flange is horizontal) with the gasket at the provided flange or flange socket and fix it with 4 washers and screws M8.

Circuit diagram $MOLLET-MSD-Silo-Pressure-Detector-fig- $3$$

Cable gland

Cable run
Run the connection cable in a way that no traction can occur at the pressure detector. $MOLLET-MSD-Silo-Pressure-Detector-fig- $4$$

Switching point

Commissioning

Put the pressure detector into operation only, if the installation in the silo or vessel and the electrical connection has been done correctly.

Normal operation

Use the pressure detector in its intended application only.
Comply with the specifications on the data plate.
Damaged devices have to be put out of operation immediately.
The pressure detector must not be modified. If there is any modification, the warranty of the manufacturer will be, canceled.

Inexpert handling

Servicing

The servicing of the pressure detector may be carried out by the manufacturer only.

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