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Machines & equipment for sale

Airflow Group Large Capacity, Top Hat / Bell Oven.

Direct From Site Clearance

Normal Retail Price [?]
£ 12,000 (+ VAT)
Direct Site Clearance Price [?]
£ 8,750 (+ VAT)
Part of a Direct Site Clearance
Special Build Heavy Duty Airflow Ovens
From a working environment, Seen working by RSW, Good Condition
Stock No
Airflow Group
Year of Manufacture
From a working environment, Seen working by RSW, Good Condition
Internal Size (WxDxH mm)
3010 x 3000 x 1890
Max Temp
225°C @ 4000kg
Other Info
Have DOORS fitted = conventional access
Our Central Warehouse, Aldridge, UK
Weight (kgs)
External Dimensions (WxDxH mm)
3900 x 4500 x 2825 (MR)


Special build Gas Fired Airflow 225°C Bell Oven.

This oven is not designed to be bolted down.
It is a free standing bell oven designed to be lifted off and over its contents.
It has seals to seal it to the floor.
The ovens exhaust fan is designed to be ducted to atmosphere.

Roof mounted explosion relief panels.

Internal construction from mild steel galvanized sheeting

Dimensions (w x d x h) 

Work envelope:- 3010 x 3000 x 1890 mm
Internal Dimensions (wall to wall) 3310 x 3000 x 2295 mm
External dimensions (Of the Box oven) 3465 x 3170 x 2400 mm
Overall external dimensions (inc. ladder and burner) 3900 4500 x 2825 mm


  • Internal dimensions 3.0 d x 3.0 w x 1.9 h (nominal). The oven is of 225°C construction.
  • Based on a maximum oven temperature of 225°C and a load of 4000 Kg, the calculated heating load gave a burner size of 220 KW.
  • Burner 220Kw soak Load mas 4000kg   @ 225*c
  • There are two 2.2 kW circulation fans. These fans will provide approximately 7.8 air changes per minute.
  • Additionally, the oven is fitted with one 0.75 kW exhaust fan.
  • The estimated total electrical load is a minimum of 12 Amps per phase.
  • The oven has no door module with standard insulated panels in place of the door. The oven has extra framework on the top of the oven to allow the oven to be lifted over the component to be heated. Seals are fitted to the bottom of the oven so it will seal to the floor.
  • There is an access ladder leading to a platform to allow the crane hook to be affixed to the lifting beam. 
  • There is an insulated emergency door in 1 wall. A micro switch detects whether the oven is sited so that the oven will shut down if lifted while still in operation. The control panel is supplied with a flying lead, plug and socket to allow movement of the oven. The gas burner is supplied with braided gas flex with a self sealing coupling.

The box oven installation and maintenance manual we have for this oven is of a standard Airflow oven. This oven differs slightly in construction and layout.

The standard temperature control of this oven is provided by a Technologic K32.

The over temperature protection of this oven is provided by a PR Electronics 4166.

Comtherm EK-1  Burner

  • The burner consists of a nozzle assembly having fuel and air jets designed to produce effective mixing of the fuel and combustion air hence providing good flame stability.
  • The nozzle assembly is fitted with integral ignition and flame sensor facilities.
  • The unit comes complete with all the valves and controls required; forming a fully packed, safe burner assembly.
  • The valves and controls are pre-piped and mounted on the burner, as illustrated diagrammatically in the manual . Pressure test points are fitted between valves where necessary.
  • The physical arrangement of the burner is shown in diagram form on page M3 of the manual
  • All the electrical equipment on the unit is pre-wired to a terminal enclosure on the assembly.
  • The electrical operation of the burner is as follows:
  • When the electrical supply is switched on to the burner and all the control circuits are closed, the burner light up sequence is initiated.
  • The burner flame safety sequence control unit (unit A1) receives the electrical start signal and begins to cycle through an air pre-purge and light up sequence.
  • The air pre-purge is for a specified, preset time and allows for dilution of any fuel leakage; to safeguard against the possibility of explosive fuel/air mixture being present in the firing chamber when the ignition is energised.
  • After the completion of the pre-purge, the burner turns down to low fire, hence, the ignition and flame proving period take place.
  • When the flame signal is proven, the burner sequence control remains in the operating position until the control circuits are switched off or a flame failure (lockout) condition occurs.


Technologic K32 Temperature Control


  • ON/OFF control with neutral zone
  • PID single action or double action (Heat/Cool) with overshoot control
  • Bumpless ramp to set point change
  • Start-up delay
  • Independent timer with 5 functioning modes (optional)
  • Setpoint change from digital inputs
  • Digital Setpoint retransmission (Note 1)
  • Up to 4 memorized setpoints
  • 8 segment programmer with events recovery, 2 events and guaranteed soak (optional)
  • Wattmeter for calculating the instantaneous power and energy used
  • Counter for days and hours worked with programmable threshold for programmed maintenance
  • Compressor protection timer

HW 07.08.2020 NE 08/08/02020

pdf icon Print / Download Airflow Group Large Capacity, Top Hat / Bell Oven. Datasheet

Additional files

Photographs taken prior refurbishment. Our refurbishment service is not available on all machines.