1. ELECTRICAL BOX TYPE OVEN
Purpose of use : Powder curing
Maximum temperature : 220ºC
The furnace heating system is designed as forced convection system. It
is based on the principle of pumping the oven volume air into the oven
with the help of a circulation fan and increasing the oven temperature
with the heat transfer provided by the air passing through the heating
unit.
The walls of the furnace and heating unit are made of modular sheet
metal and high density insulated panels. Air distribution ducts with
regulated flaps inside the oven ensure that the oven temperature is
homogenous at every point. The temperature control device is digital
type and provides precise adjustment of the oven temperature.
The heating unit is placed on the side, rear or top of the oven and
consists of an insulated heating chamber, heating cell with resistance
inside, circulation fan that can operate at 250ºC and maintenance
cover.
Material of outer surface : 1mm Carbon steel sheet metal, externally
powder coated
Material of inner surface : 1mm Galvanized steel sheet metal,
non-coated
Insulation thickness : 150 mm
Insulation : Ground – 50mm of Rock wool (50 kg/m³)
Side and top panels – 150mm of Rock wool (50 kg/m³)
Heat transfer : Convection, by closed air circuit
Heating Type : Direct heating with electrical heaters
Temperature control : On/Off, 0-400ºC Digital thermostat, Fe-Const
(J-type) thermo-couple
Ambient temperature : +10ºC (while working)
Oven uniformity : ±2,5ºC (5ºC in total)
Control accuracy : V5861515 ±1ºC
Heat-up time : 25-30 min (empty oven)
Oven door : Manual, Hinged type, from one side
Loading/Unloading : Hand pushed from shop floor into the oven
1.1. HEATING UNIT
Source : Electricity
Circulation fan : 380V - 50Hz, sheet metal body and propeller
Heating energy demand : Calculated to reach 200ºC in 30 minutes
(empty oven)
Electrical heaters : Tube type, surface increased serpentine heaters
1.2. CONTROL PANEL AND ELECTRICAL INSTALLATION
The electrical control cabinet is mounted externally on the side wall
of the oven and is internally wired from the motors and heating system
to the cabinet. The control panel consists of SCHNEIDER ELECTRIC