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  • Yamato DNF-401, Energy Saving, 2 in 1, Forced and Gravity Convection, 3.2 cu ft. (90L), 115V 11A
  • Yamato DNF-401, Energy Saving, 2 in 1, Forced and Gravity Convection, 3.2 cu ft. (90L), 115V 11A
  • Yamato DNF-401, Energy Saving, 2 in 1, Forced and Gravity Convection, 3.2 cu ft. (90L), 115V 11A

Yamato DNF-401, Energy Saving, 2 in 1, Forced and Gravity Convection, 3.2 cu ft. (90L), 115V 11A

Product SKU: DNF-401

Quick Overview

Forced and Gravity Air Oven


Availability: In stock


High-performance,  energy-saving,  programmable constant temperature, forced convection ovens with air velocity control and exhaust dampers.  The first 2 in 1 system in the industry!

Performance and functions

  • Two types of circulation, forced and natural convection, in one unit (compatible with model 400/600)
  • Eco-oven with improved air velocity control system and adjustable damper
  • Program featured to reduce power consumption significantly
  • Superior heat tightness and insulation of chamber
  • Excellent dust tightness, dust can hardly enter the chamber
  • Air velocity changeable in 10 stages using digital setting of controller
  • Standard with 99 step program operation with repeat operation, auto start, auto stop and quick auto stop functions
  • Adjustable damper position at chamber front to optimize operation
  • Fluorescent display, interactive input method, calibration off-set function
  • 1 year manufacturer warranty 

 DNF Series Brochure




Additional Information

Technical Specifications

Circulation Method

Forced convection + Natural convection

External Temp. Range


Temperature Set Range

0~130°C (Wind velocity: 0), 0~270°C (Wind velocity: 1~10)

Temperature Control Range

RT +25~120°C (Wind velocity: 0), RT +15~260°C (Wind velocity: 1~10)

Temp. Control Accuracy *¹

Forced convection

±0.3°C (at 260°C)

Natural convection

±0.3°C (at 120°C)

Temp. Fluctuation *¹

Forced convection

±0.5°C (at 260°C)

Natural convection

±0.8°C (at 120°C)

Temp. Distribution Precision *¹

Forced convection

±2.5°C (at 260°C)

Natural convection

±3°C (at 120°C)

Temp. Gradient *¹

Forced convection

7°C (at 260°C)

Natural convection

13°C (at 120°C)

Temp. Rise Time *¹

Forced convection


Natural convection


Chamber / Exterior / Insulation

Stainless steel / Cold rolled steel paneling, chemical-proof baked-on finish / Glass wool


Single swing (left side)

Heater (Stainless Steel Tube)


Wind Velocity Adjusting System

10 steps (600~1500rpm) + Wind velocity (0)


Circulation-Ventilation Manual switching: Interlocked intake and exhaust system (Complete exhaust applicable / Unable to reach 260°C with damper fully open)

Cable Port

Inner diameter: 33mm×1 (right side)

Exhaust Port

Outer diameter: 50mm×1 (back side)

Inlet Port

Inner diameter: 33mm×1 (right side)


Model V type

Temperature Control / Setting System

PID Z control / Digital setting with ▲/▼ keys

Temperature Display System

Temperature reading display: green 4-digit digital LED / Temperature setting display: orange 5-digit digital LED

Other Indications

LED indicates temperature patterns for heating/stabilizing/cooling


Fixed temperature operation, Program operation (maximum 99 steps or 99 patterns, with repeat operation function), Timer or clock operation function (Fixed temperature operation w/ auto start/auto stop/quick auto stop, program operation auto start)

Additional Functions

Variable Air Flow Function, Power-on Time and Operation Time Accumulation Monitor (up to 65,535 hours); Calibration Offset; Monitoring Display for Accumulated Power Consumption, Total CO 2 Emissions, and Heater Operation Output; Power Recovery Mode; Setting Data Backup and Recovery

Temperature Sensor

K type Thermocouple double sensor (for temperature control and independent overheat prevention device)

Heater Control

Triac with Zero-cross Control

Control Board

Self-diagnostic Functions (Detection for Temp. Sensor Failure, TRIAC Short Circuit, Automatic overheating prevention, Heater Line Disconnect, Main Relay Contact Damage ), Earth leakage breaker, Fan Motor Failure, Key Lock Function, Independent overheating prevention device

Earth Leakage Breaker

Leak Current/Short Circuit/Over-current Protection, Rated Current Sensitivity 30mA

Door Switch

Door open: fan motor and heater circuit OFF, Door close: fan motor and heater circuit ON

Internal Dimensions (W×D×H Mm)*²

17.7x17.7x17.7 in. (450x450x450 mm)

External Dimensions (W×D×H Mm)*²

22.8x25.4x35 in. (560x645x890 mm)


23.8 gals. (90L)


165 lbs. (75kg)

Number Of Shelf Bracket Step / Pitch

11 steps/30mm

Withstand Load Of Shelf


Power Supply V±10% 50/60Hz Single Phase

AC115V, 11A

Shelf Plate / Bracket

2 pcs. / 4 pcs.

*1. Temperature Accuracy / Rise time Standard: Testing Machinery Association of Japan. Temperature Fluctuation/Gradient Standard: Japanese Industrial Standard
Performance data above based on 115V or 220V AC supplied power, 23°C±5°C (room temperature), 65%RH ±20% humidity, maximum air speed (FAN setting 10), damper closed, and no process load.
*2. Protrusions excluded.

Convection Gravity and Forced Air Convection
Oven Capacity 3.2 cu ft.
Oven Voltage 115V

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