VULCANIC SAS
Instruction Manual
RADEB Type Radiator
81080-11 Rev A dated 27/06/13 - UTEN RADEB Radiator – Page 3/5
- Closure of the cover can be eased by the use of a non-corrosive grease whose flash point is
greater than the maximum temperature reached by the box.
- Only apply electrical voltage to the installation after correctly closing the cover and
reinstalling the opening locking device.
4.
SPECIAL CONDITIONS FOR SAFE USE IN POTENTIALLY EXPLOSIVE
ENVIRONMENTS
- In natural convection, the heating elements must be placed horizontally. They must not be
covered, so as to allow good air circulation. A free space of min. height 150 mm must be
present above and below the heater bundle.
- In forced convection the heating elements can be placed in all positions. Nevertheless a
minimum air speed must be guaranteed, and the electrical power supply must be slaved to
the presence of this flow rate, in compliance with the conditions appearing on the
manufacturer's contractual documents.
- When it exists the safety device must irreversibly cut the electrical power supply in the event
of a fault, independently of that of the regulation, which necessitates human intervention to
rest the installation after seeking the cause of the tripping out. Its setting is a maximum of
195°C in class T3 and 130°C in class T4. Its interpretation must have fast, positive action; it
must act directly on the radiator's electrical power supply, and must not be relayed by
software. Failing this the safety circuit must have a minimum integrity level of SIL 1 as
required by standard EN 50495.
- When the radiator sub-assembly includes a device to limit the surface temperature of its
heating elements, this must be duplicated by the safety device described above. The limiting
device is preset by VULCANIC to a setting that avoids the surface of the elements reaching a
temperature of 195°C en class T3 and 130°C in class T4, in the most unfavourable normal or
accidental operating conditions. This setting depends on the response time and differential of
this device.
- In no case must the adjustment of the limiting and safety settings, done in the VULCANIC
factories, be modified.
- In the absence of a temperature safety device, the user must provide monitoring of the
supply voltage (which must not exceed the rated voltage by more than 10%), and the
ambient temperature of the box (which must not exceed 40°C or 60°C depending on the
model).
The quality of the atmosphere in which the radiator is installed must be compatible with the
austenitic stainless steel making up the sheath of the heating elements, so as not to damage
them by corrosion.
- The specifications of installation standard IEC/EN 60079-14 must be complied with (in
particular for monitoring of the radiator electrical insulation), as well as the current national
standards. A fall in insulation could be a forewarning of loss of sealing of the heating
elements, which necessitates an immediate switching off of the electrical power supply.
- The terminal box cover must not be opened in a potentially explosive atmosphere
5.
ELECTRICAL CONNECTION
This connection must take place when the voltage is switched off.
5-1 - Removing the cover: Remove the 4 fixing screws and extract the cover.
5-2 - After introducing the cable through the gland connect the two or three phases to the
terminals according to the diagram attached to the equipment.
Warning: These electrical couplings are generally made in the VULCANIC factories.
Modifying them is formally prohibited.
5-3 - The internal and external earth terminals must be connected to the installation earth.
