Formeco Drester 120, Использование и обслуживание

Страница: 18 / 28

- 17 -
8. MAINTENANCE
The maintenance has to be performed by specialised personnel that are adequately trained.
For the annual maintenance and for the changing of the diathermic oil it is advised to request assistance from
an authorised service centre or to the manufacturer.
8.1.
Periodic ATEX verification
The electrical installations in areas with explosion risks have specific characteristics that make them apt to op-
erate in such areas. It is essential, for safety reasons, during the lifecycle of the apparatus, to maintain these
characteristics; therefore a periodic control is necessary that is at least once every three years (EN 60079-).
This control has to be performed by qualified personnel.
In the occasion of maintenance or repair on the machine, the qualified personnel can perform the necessary
checks.
8.2.
Daily maintenance
a. Cleaning of the boiler
Clean daily the inside of the boiler, removing crusts and deposits that might have been formed. In that way
the heat exchange between diathermic oil and solvent remains at its optimum.
b. Check diathermic oil
Check the diathermic oil level in the oil expansion vessel when the unit is cold. If necessary top up the level.
8.3.
Weekly maintenance
a. Cleaning of the condensation circuit
Blow with compressed air into the vapour manifold to remove deposits that might have been formed by en-
trainment or boiling over.
Clean the outside of the condensation section with compressed air.
8.4.
Maintenance every 2000 working hours
After 2000 working hours the red alarm light will start to blink. Replace the diathermic heating oil and clean
the electrical heating element. This maintenance should be done with a cold machine.
After this maintenance the hour counter will have to be reset.
The machine has to be disconnected from the main power when performing the following maintenance.
a. Diathermic oil change
Set up a collecting container under the machine to collect the used diathermic oil.
Oil type: FORMECO LT200, MOBILTHERM 605, ESSOTHERM 500, SHELL ThermiaB,
TOTAL Seriola 1510. For different brands, use diathermic oil with a cracking temperature
higher than 320 ° C and a viscosity of about 31 cSt at 40 °C and 5,3 cSt at 100 °C.
b. Diathermic oil change RS 120 machines
Model RS120
Oil quantity (litres) 6,5