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and Data Sheet

 

INSTALLATION - MAINTENANCE - AFTER SALE ASSISTANCE.

The TECHNICAL MANUAL of Moletron Equipment is very detailed about the INSTALLATION operations and the very few operations of MAINTENANCE.

It also contains sections dedicated to remote after sales service.

The INSTALLATION of Moletron Equipment may be carried out at yard or during a port call of 2-3 days.

We foresee the presence of our Service Engineer who gives proper assistance to the Staff in charge of the installation and will instruct the Engineers Staff on the topic of the expected results deriving from the new parameters of the combustion process.

Usually, with the help of two days manpower of an electrician and a pipe fitter, either from shipyard or ship's crew, Volmar Service Engineer completes all connections and calibrations.

At the end of this chapter you will find two diagrams relevant to the operations of "erecting the Moletron cabinet unit" and "how to install a treatment cell in a fuel oil piping system".
 

The MAINTENANCE necessary to ensure a long life to Moletron is very limited and consists in:

  • weekly (or monthly) check the electronic operation parameters as frequency, voltage and feedback tracks that are shown on a digit display of each unit.
  • periodically cleaning the probes installed in fuel oil filters, probes that catch iron or nickel particles contained into the fuel oil.
  • twice a year paying an internal visit to treatment cell and clean them from trapped magnetic particles that may have escaped the filters' probes.

For the AFTER SALES ASSISTANCE, the presence on board of a Volmar Service Engineer - which Volmar or Volmar Agent assure on request - is very seldom required.

Usually, Chief Engineers are able to carry out very well by themselves the tasks outlined in the Technical Manual,

or through:
remote after sales assistance, that includes:

  • availability of English speaking Engineers who answer questions posed by Superintendents, Chief Engineers, Technicians and Electricians - either via telephone, fax or Internet.
  • replacement of missed Technical Manuals, or supply of their translation in several languages


M O L E T R O N
_ E Q U I P M E N T - GENERATOR’S CABINET – OVERALL DIMENSIONS
 
REF. Model
40
A
B
C
D
E
F
G
H
X
Y
430
615
600
250
75
315
415
25
410
237

SIZE are in mm. and in accordance with different models


 
 

L e g e n d:

  1. Front view of Moletron cabinet.
  2. Side view of cabinet with open door.
  3. Electrical junction box (see detail at "D3").
  4. Four shock absorbers.
  5. Four spacers to allow ventilation at back of the cabinet.
  6. Bulkhead (or joist, or beam, or column).
  7. Steel frame-bracket, to be welded at (6).
  8. Four bolts: for model 40 are 6 x 20 mm
    ................for model 50 are 8 x 30 mm
  9. Cabinet lugs.
  10. Cabinet steel plate.
  11. Counter bracket: CAUTION, NEVER WELD ON COUNTER BRACKET.
  12. Bolts and nuts are threaded 8 M

 

ERECTING THE MOLETRON CABINET UNIT

The choice of the place where generators’ cabinet are to be installed is very important for the correct operation of generators.
The supporting structure (bulkhead, joist or column or beam) where cabinets have to be fixed, must possess FOUR DISTINCT FEATURES:

  1. Must be located in a ventilated place (possibly close to the hull)
  2. Must be in an area of minimal vibrations.
  3. Must offer to each cabinet a space 200 mm wider than dimensions of A + B + C.
  4. The foreseen distance from cabinets to treatment cells must not exceed the length of the supplied coaxial cable connecting treatment cells to generators. However it has to be taken into account up and down of cable run and other details shown on "D3".

Before starting welding operations, make sure that the Chief Engineer has obtained the necessary authorisations, and that SAFETY is guaranteed in the installation area, included the room beyond the bulkhead on which the bracket has to be welded.
Do not neglect to install the 4 shock-absorbers, supplied with each unit. They absorb ship vibrations and cut interaction between ship’s vibrations and the inner vibrations of the generator.

HOW TO INSTALL A TREATMENT CELL IN A FUEL OIL PIPING SYSTEM

Every treatment cell is supplied with blank mating flanges, to be bored and machined on the spot to match the diameter of the existing fuel pipe.

Max. F.O. flow 8 T/h 11 T/h 17 T/h 30 T/h
NOMINAL DIAMETER 2" or 50 2-1/2" or 65 3" or 80 4" or 100
F D 165 185 200 220
F T 18 18 20 23
L B F 333 333 420 420
B C 125 145 160 180
T H 250 260 275 310
bolt holes n. 4 4 8 8
holes diam. 18 18 18 18
Whenever possible, the pipe welding should be carried out in a workshop where the section of the fuel pipe to be modified can be put into pipe sets and flange guides to facilitate the most accurate installation of the treatment cell.
In case of flange welding in site, a proper plug of wet cloth must be put in the hanging pipe, to prevent fire ignition inside the piping system.
Make sure that this plug has been withdrawn before reconnecting the pipe.
The treatment cells must be installed in accordance with the direction of the fuel flow in the piping system (follow the arrow printed on each cell).
Do not allow the fuel to flow through the treatment cells before each Transducer-Inducer is connected to the appropriate Generator, i.e.: the cell installed before the preheater(s) must be connected to the MCO Generator, the one installed after the preheater(s), to the MWO Generator.