Mobrey MCU200 Series Installation, Operation & Maintenance Instructions Manual Download Page 3

SAFETY PRECAUTIONS

 

(continued from previous page)

SAFETY SYMBOLS

For the guidance and protection of the user, the following safety symbols appear on the equipment:

  SYMBOL:

MEANING:

Fault indicator. Refer to Operating Manual for detailed instructions of use.

Hazardous voltages

NOTES, CAUTIONS AND WARNINGS

For the guidance and protection of the user, Notes, Cautions and Warnings appear throughout the manual.  The 
significance of these are is as follows:

NOTES 

highlight important information for the reader’s special attention

CAUTIONS 

guide the reader in avoiding damage to the equipment

WARNINGS 

guide the reader in avoiding a hazard that could cause injury or death.

AVOID UNSAFE EQUIPMENT

The equipment may be unsafe if any of the following statements apply:

• Equipment shows visible damage
• Equipment has failed to perform an intended operation
• Equipment has been subjected to prolonged storage under unfavourable conditions
• Equipment has been subjected to severe physical stress.

If in any doubt

 as to the serviceability of the equipment, don’t use it.  Get it properly checked out by a qualified service 

technician.

LIVE CONDUCTORS

When the equipment is connected to its’ supply, the opening of covers or removal of parts could expose live conductors.  
The equipment must be disconnected from all power and signal sources before it is opened for any adjustment, 
replacement, maintenance or repair.  Adjustment, maintenance and repairs must be must be done by qualified personnel, 
who should refer to the Maintenance Manual.

DO NOT OPEN THE ELECTRONICS UNIT WHEN IT IS ENERGISED.

EQUIPMENT MODIFICATION

To avoid introducing safety hazards, never install non-standard parts in the equipment, or make any unauthorised 
modification.  To maintain safety, always return the equipment to 

Delta Mobrey

 

for service and repair.

Page 3

Summary of Contents for MCU200 Series

Page 1: ...one direction only 50msecs in other direction Approx LED indicators Red for alarm Green for normal Yellow for cable fault LED state Green Red indication selectable for either sensor state Sensors comp...

Page 2: ...tud before control or signal leads are connected The ground connections must have a current rating of 25A AC SUPPLY Never operate the equipment from a line voltage or frequency in excess of that speci...

Page 3: ...iled to perform an intended operation Equipment has been subjected to prolonged storage under unfavourable conditions Equipment has been subjected to severe physical stress If in any doubt as to the s...

Page 4: ...cal to avoid build up of solids on the sensor faces on either side of the gap In this condition the switching level will be half way up the face if the sensor is mounted from the side of the tank this...

Page 5: ...inal for neutral and one of the 115V or 230V terminals depending on the voltage supply available BEWARE the terminal not connected externally will be live once the transformer is powered via the other...

Page 6: ...l cables attached to the sensors normally these are linked at the sensor to the metal body of the fitting or to each other in the case of non metallic sensors If this continuity is broken the FAULT LE...

Page 7: ...eration of any ultrasonic sensor system This adjusts the gain of the feedback amplifier in the control unit which produces oscillation of the sensor when the coupling between the ultrasonic crystals i...

Page 8: ...e the latching short circuit is applied Only after this circuit is broken can the relay re energise under the control of the sensor A latching alarm can therefore be achieved by connecting one pole of...

Page 9: ...uence of operation to 1 MHz see fig 5 if the sensor will operate at this frequency ii With sensor or pipe in relatively clean water supernatant set gain switch to LO and reduce gain pot see fig 5 unti...

Page 10: ...periodic inspection by a qualified person to ensure that the installation including wiring and equipment housing is safe 5 Spares and fault finding 5 1 The following parts are suitable for replacement...

Page 11: ...r by reflection method Page 11 iv Check the incorrect operation has not been produced by incorrect setting of the frequency selection switch or an external short circuit on the auxiliary input termina...

Page 12: ...ited Riverside Business Park Dogflud Way Farnham GU9 7SS UK 44 0 1252 729140 44 0 1252 729168 mobrey delta mobrey com Linkedin com company delta mobrey ltd Twitter com DeltaMobreyUK Facebook com Delta...

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