OFFICINE OROBICHE LL RG4 User manual

OFFICINE OROBICHE 1/10
INSTRUCTION MANUAL
Illuminators LL RG4, LL RG6, LL RG4 CG, LL RG4 CG
24010 Ponteranica (Bergamo) ITALY - Via Serena, 10 - Tel. [phone] - Fax [phone] -
www.officineorobiche.i t- e-mail:[email protected]
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GEN. 2020 Information subject to change without prior notice IST/192-I
1.1 General health and safety instructions
2.1 Intended use
3.1 Scope of supply
3.2 System description
4.1 Mounting
5.1 Wiring
6.1 Marking
7.1 Maintenance
8.1 Disposal
9.1 Warranty

OFFICINE OROBICHE 2/10
24010 Ponteranica (Bergamo) ITALY - Via Serena, 10 - Tel. [phone] - Fax [phone]
www.officineorobiche.it - e-mail:[email protected]
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GEN. 2020 Information subject to change without prior notice IST/192-I
1.1 General health and safety instructions
A. Avoidance of danger for persons and property
•Only use unit for intended purpose.
•No additional mountings and modifications on the unit without our approval.
•Adhere to the standards for prevention of accidents and to the plant specific safety regulations.
•Read and observe installation and operating instructions.
B. Application limits
Only use this unit according to these operating instructions and to the parameters agreed upon in the delivery contract
(see identification plate) including the agreed operating conditions.
C. Avoidance of danger and damages
•Distribute these mounting and operating instructions to appropriate department “arrival of goods, works transport,
mounting, commissioning and maintenance”.
•When passing the unit to a third party, these mounting and operating instructions must be enclosed in the national
language of this third party.
•Only skilled and qualified personnel with special work order may work on the unit, which must be free of pipeline
stress!
•Carefully read, observe and preserve these mounting and operating instructions.
•Observe and adhere to the precautions marked in bold characters in the sections of these mounting and operating
instructions!
•Avoid shocks and impacts during transport, which could damage the unit.
•In case of intermediate storage take care for a dry and appropriate place where the unit cannot be damaged.
Attention
The fitting is under pressure during operation!
If flange connections, screw plugs or stuffing boxes are unfixed, hot water and steam will escape.
Carry out assembly and maintenance works only if plant is completely depressurized!
The fitting is hot during operation!
Severe burns on hands and arms are possible.
Wait until the unit has cooled before carrying out assembly and maintenance works!
Severe burns and scaldings on the whole body are possible!
Wait until the unit has cooled. In case of opening and disassembling the unit, residual medium can escape. Further
evaporation is also possible on depressurized plant.
Sharp-edged interior parts can cause cutting damages on the hands!
2.1 Intended use
The illuminators are used in direct water level gauge which can be mounted on steam generators. In the sight opening,
the water space is indicated in green and the steam space in red.
The level gauge works on the principle of communicating pipes. With the LL RGx illuminators, red and green light falls
on the display unit. If there is water in the display area, then the light rays will be diverted in such a way that the green
light beam falls on to the slit diaphragm of the display box. In the steam area the light rays are not diverted and the red
light beam is projected.

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GEN. 2020 Information subject to change without prior notice IST/192-I
As a result the water compartment always appears green and the steam compartment red.
3.1 Scope of supply
The LL RGx illuminator are delivered in 3 parts. (see fig. 1)
Part 1 consists of:
•illuminators
Part 2 consists of:
•steel enclosure
Part 3 consist of:
•power supply enclosure
Fig. 1

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Part 1
Illuminator with round connector Illuminator with cable gland
(standard version) (special version) Without Sunshade
With Sunshade
With removable Sunshade

OFFICINE OROBICHE 5/10
24010 Ponteranica (Bergamo) ITALY - Via Serena, 10 - Tel. [phone] - Fax [phone]
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GEN. 2020 Information subject to change without prior notice IST/192-I
Part 2
Steel enclosure
Part 3
Power supply unit
Fig. 3.2 Without Sunshade Fig. 3.3 With Sunshade
3.2 System description
ILLUMINATOR
The illuminator is modular and has two different sizes, six pixels (three green and three red) and
four pixels (two green and two red). Pitch between pixels is related to the distance between glasses
and the pair of pixels red and green is oriented in order to allow the light emitted pass through the
gauge glass window. Connection to power supply can be fitted via circular connector or via cable
glande. Each pixel is connected to the power supply via two single conductor, power supply will be

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12 VDC and comes from an AC/DC converter inside the power supply unit via circular connector.
Illuminator body is made of an aluminum block machined, front side is protected with
polycarbonate sheet stuck to the aluminum body. The illuminator with four pixels has one circular
connector or one cable gland, the ones with six pixels has two cable glands or two circular
connectors. The illuminator itself always has to be mounted on own steel case. Steel case ensure the
right fixing of the illuminator and the protection of the circular connector, the same protection also
acts as a cable guide.
Coding
Four pixels with round connector: LL RG4 4W
Six pixels with round connector: LL RG6 6W
Four pixels with cable gland: LL RG4 CG 4W
Six pixels with cable gland: LL RG6 CG 6W
The complete illuminator will be fixed to the steel cabinet with four screws, position of one respect
to another is fixed in order to maintain the distance from the pixels (see fig. 3). The quantity of the
illuminators is related to the dimension of the level gauge. The light, green and red, is projected on a
diffused white screen at the opposite side of the level gauge body.
Power supply cable is an 8x0,5 mm, length is in relation to the installation site, each cable is
connected to four pixels. In the six pixels illuminator one of the two cables is partially used, only
four single conductor is connected to the power supply.
Fig. 3
POWER SUPPLY ENCLOSURE
Power supply unit is composed of an enclosure in different sizes in relation to the dimension of the
level gauge. Inside there is an AC/DC power supply with Vin 115/230 VAC and Vout 12 VDC. For
every illuminator there is a cable with own round connector except for the LL RG6 who has two
connectors. Every cable comes out from the power supply enclosure via its own cable gland. One
more cable gland is needed for the 115/230 VAC in.

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GEN. 2020 Information subject to change without prior notice IST/192-I
When the illuminators are supplied with circular connectors wiring is ready for plug and play,
enclosure has the right quantity of cables and connectors to be connected to the illuminators, cable
length has to be defined in the order description.
4.1 MOUNTING
Mounting of the complete illuminator device is simply.
1) Fix the LL RGx to steel plate as per the picture below
2) Fix the panel to the front screen and to the back plate with the M5 screws, remember that the power supply
round connector or cable gland will be placed where the smaller side of the gauge is as per picture below
3) Fix the assembly just obtained to gauge body with M5 screw as per picture below, pay attention that connector
shall be placed at the same side of the smaller part of the body
GREEN
RED
GREEN
RED

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4)
5) Fix the last steel plate to close the enclosure always using M5 screws, connect all the cables using the round
connector locking the male stopper and apply the cable protection using some of the M5 screws

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GEN. 2020 Information subject to change without prior notice IST/192-I
5.1 Wiring
To connect the main power supply provide a 3x2,5 mm2 to be connected to the dedicated terminals inside the power
unit. Earth terminal has to be connected to the ground properly and power supply has to be protected as per country
regulation.
6.1 Identification plate / Marking
The following data are indicated on the identification plate:
* marking depending on the realization
A Model code
B Manufacturer Logo
7.1 Maintenance
Illuminator itself is maintenance free, if any problem occurs eg pixel not working or bad working the illuminator has to
be removed and replaced.
Periodically if needed, clean with a soft and damp cloth the transparent front screen. The same is true for the white front
screen.
Pay attention to hot surface before cleaning.
8.1 Disposal
Dismount unit and separate waste products.
When disposing the unit, observe legal regulations for waste disposal.
A
A
L N
IN
115/230 VAC

OFFICINE OROBICHE 10/10
24010 Ponteranica (Bergamo) ITALY - Via Serena, 10 - Tel. [phone] - Fax [phone]
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GEN. 2020 Information subject to change without prior notice IST/192-I
9.1 Warranty
All the illuminator device are guaranteed to be free from manufacturing faults over a period of 12 months from the date
of shipment.
In the event of failures, implying return of goods within the limit specified above, OFFICINE OROBICHE will replace
(shipment fees not included) all damaged parts free, provided that the failure does not ensue from incorrect use.
OFFICINE OROBICHE shall never be held responsible for any incorrect use of their products when these are
used for purposes other than those mentioned in the specifications approved at the order stage.
In these cases, no complaints will ever be taken into consideration.
No damage and/or fee, whether direct or indirect, ensuing from an incorrect installation or use shall ever be
debited to OFFICINE OROBICHE.