Yamato DKN302C User manual

Forced Convection Oven
Models
DKN302C/402C/412C
DKN602C/612C
DKN812C
DKN912C
Instruction Manual
First Edition
●Thank you for choosing DKN-C series Forced
Convection Ovens from Yamato Scientific Co., Ltd.
●Forproperequipmentoperation,pleasereadandbecome
thoroughly familiar with this instruction manual before
use. Always keep equipment documentation safe and
close at handfor convenientfuturereference.
Warning: Readinstructionmanual warnings and
cautions carefully and completely
before proceeding.
Yamato Scientific America Inc．
Santa Clara，CA
Printed on recycled paper

TABLE OF CONTENTS
1. SAFETY PRECAUTIONS ............................................................ 1
Explanation of Symbols...................................................................................................................... 1
Symbol Glossary................................................................................................................................ 2
Warnings & Cautions.......................................................................................................................... 3
Warnings & Cautions.......................................................................................................................... 4
2. PRE-OPERATION PROCEDURES .................................................... 5
Installation Precautions & Preparations............................................................................................. 5
3. COMPONENT NAMES AND FUNCTIONS............................................. 10
Main Unit.......................................................................................................................................... 10
Display Characters........................................................................................................................... 14
4. OPERATION PROCEDURES........................................................ 16
Operation Modes and Functions...................................................................................................... 16
Mode & Function Flow..................................................................................................................... 18
Overheat Prevention Device Setup.................................................................................................. 19
Constant Temperature Mode............................................................................................................ 20
Constant Temperature + QuickAuto Stop Mode.............................................................................. 21
Auto Stop Mode ............................................................................................................................... 22
Programmed Operation.................................................................................................................... 26
Pattern Repeat Function.................................................................................................................. 31
Program Planning Worksheet.......................................................................................................... 32
Other Functions: Calibration Offset.................................................................................................. 34
Other Functions: Keypad Lock......................................................................................................... 35
5. HANDLING PRECAUTIONS ........................................................ 36
6. MAINTENANCE PROCEDURES .................................................... 39
Inspection and Maintenance............................................................................................................ 39
7. EXTENDED STORAGE AND DISPOSAL.............................................. 40
ExtendedStorage/UnitDisposal.......................................................................................................... 40
Disposal Considerations .................................................................................................................. 40
8. ERROR CODES................................................................... 41
Reading Error Codes ....................................................................................................................... 41
Troubleshooting Guide..................................................................................................................... 42
9. SERVICE & REPAIR ............................................................... 43
10. SPECIFICATIONS ................................................................ 44
11. WIRING DIAGRAM ............................................................... 46
DKN302C/402C/602C...................................................................................................................... 46
DKN412C/612C ............................................................................................................................... 47
DKN812C......................................................................................................................................... 48
DKN912C......................................................................................................................................... 49
12. REPLACEMENT PARTS LIST...................................................... 50
13. HAZARDOUS SUBSTANCES LIST ................................................. 52

1
1. SAFETY PRECAUTIONS
Explanation of Symbols
A Word Regarding Symbols
Various symbols are provided throughout this text and on equipment to ensure
safe operation. Failure to comprehend the operational hazards and risks
associated with these symbols may lead to adverse results as explained
below. Become thoroughly familiar with all symbols and their meanings by
carefully reading the following text regarding symbols before proceeding
Warning
Caution
Signifies a situation which may result in minor injury (Note 2)
and/or property damage (Note 3.)
(Note 1) Serious injury is defined as bodily wounds, electrocution, bone
breaks/fractures or poisoning, which may cause debilitation requiring
extended hospitalization and/or outpatient treatment.
(Note 2) Minor injury is defined as bodily wounds or electrocution, which will not
require extended hospitalization or outpatient treatment.
(Note 3) Property damage is defined as damage to facilities, equipment, buildings or
other property.
Symbol Meanings
Signifies warning or caution.
Specific explanation will follow symbol.
Signifiies restriction.
Specific restrictions will follow symbol.
Signifies an action or actions which operator must undertake.
Specific instructions will follow symbol.
Signifies a situation which may result in serious
injury or death (Note 1.)

2
1. SAFETY PRECAUTIONS
Symbol Glossary
WARNING
General Warning
Danger!: High
Voltage
Danger!:
Extremely Hot
Danger!: Moving
Parts
Danger!:
Blast Hazard
CAUTION
General Caution
Caution:
Shock Hazard!
Caution:
Burn Hazard!
Caution: Do Not
Heat Without
Water!
Caution: May
Leak Water!
Caution:
Water Only
Caution: Toxic
Chemicals
RESTRICTION
General
Restriction
No Open Flame
Do Not
Disassemble
Do Not Touch
ACTION
General Action
Required
Connect Ground
Wire
Level Installation
DisconnectPower
Inspect
Regularly

3
1. SAFETY PRECAUTIONS
Warnings & Cautions
Warning
NEVER operate equipment near combustible gases/fumes
Do not install or operate DKN-C series unit near flammable or explosive gases/fumes. Unit is
NOT fire or blast resistant. Negligent use could cause a fire or explosion.
See “List of Hazardous Substances”(P.52)
ALWAYS ground equipment
Always ground equipment properly to avoid electric shock.
DO NOT operate equipment when abnormalites are detected
Inthe event that smoke or anyunusual odorbegins emitting from unit, or if anyother abnormalities
are detected, terminate operation immediately, turn off main power switch (Main Circuit Breaker
- “MCB”) and disconnect power cable. Continued operation under such conditions may result in
fire or electric shock.
DO NOT operate equipment with power cable bundled or tangled
Operating unit with the power cable bundled or otherwise tangled, may cause power cable to
overheat and/or catch fire.
DO NOT damage power cable
Damaging the power cable by forcibly bending, pulling or twisting may cause fire or electric shock
to the operator.
NEVER process explosive or combustible substances
Attempting to process/use explosive or combustible substances in/near unit may cause explosion
or fire. See “List of Hazardous Substances” (P.52)
DO NOT touch hot surfaces.
Some surfaces on this unit become extremely hot during operation. Exercise vigilance in order to
avoid getting burned.
NEVER disassemble or modify the equipment
Attempting to dismantle or modify unit in any way, may cause malfunction, fire or electric shock.
DO NOT insert multiple power cables into a single outlet
Inserting multiple cords into a single outlet, using branch outlets or extension cords, may cause
power cable to overheat and/or catch fire. Other issues may include a drop in voltage, which may
affect performance, resulting in failure to control or maintain proper temperature.

4
1. SAFETY PRECAUTIONS
Warnings & Cautions
Caution
Moving unit to install location
Always carry unit to install location using cargo handling equipment, such as a forklift. Unit casters
(DKN812C/912Conly)areintendedonlytofacilitateshort-distancemaneuveringatinstallationsite.
Do not roll unit over extended distances on casters. Damage to the casters may result.
DO NOT operate equipment during thunderstorms
In the event of a thunderstorm, terminate operation and turn off main circuit breaker (MCB)
immediately. A direct lightning strike may cause damage to equipment, or result in fire or electric
shock.

5
2. PRE-OPERATION PROCEDURES
Installation Precautions & Preparations
Warning
1. Ground wire MUST be connected properly
DKN302C/DKN402C/DKN602C models are rated for 115V AC power supply.
・Ground wire must be connected to a proper grounding line or teminal in order to prevent
electric shock.
・Never connect ground wire to gas lines or water pipes.
・Never connect ground wire to telephone grounding lines or to lightning conductor rods.
Doing so may result in fire or electrical shock.
・Never insert multiple plugs into a single outlet. Doing so may result in power cable
overheating, fire or drop in voltage.
Connect power cable to grounded outlet!
・DKN412C/612C/812C/912C models are rated for 220V AC power supply. Before
connecting these models, confirm facility power supply is set up to properly deliver required
voltage supply.
2. Choose an appropriate installation site
DO NOT install unit:
・where installation surface is not completely level, not even or not clean.
・where flammable or corrosive gases/fumes may be present.
・where external temperature will exceed 35ºC, will fall below 5ºC or will fluctuate.
・in excessively humid or dusty locations.
・where there is constant vibration.
・where power supply is unstable or erratic.
・in direct sunlight or outdoors.
Install DKN-C series unit in a location with sufficient space, as specified as below.
DKN302C/402C/412C/602C/612C are equipped with exhaust ports in top panel
.DKN812C/912C are equipped with exhaust ports in rear panel. Be sure these ports
remain unobstructed with adequate space to disspate outgoing heat.
ｗ
G
Grounding prong
Grounded plug

6
2. PRE-OPERATION PROCEDURES
Installation Precautions & Preparations
Warning
3. Install in a location free of flammables and explosives
Never install near flammables or explosives of any kind. This unit is NOT fire or blast resistant.
Simply switching the main circuit breaker (MCB) “ON” or “OFF” can produce a spark, which can
then be relayed during operation, causing a fire or explosion when near flammable or explosive
fluids, chemicals or gases/fumes. See “List of Hazardous Substances”(P.52)
Never process explosive or flammable substances in unit. Fire or explosion, causing serious
injury or death may result. See “Hazardous Substances List (P.52) for more information on
these substances.

7
2. PRE-OPERATION PROCEDURES
Installation Precautions & Preparations
Warning
4. Never disassemble or modify
5. Install on a level surface
Never attempt to disassemble or modifiy
this unit. Doing so may cause equipment
malfunction, fire or electric shock.
Install unit on level and even surface.
Failure to do so may cause abnormal
vibrations or noise, resulting in possible
complications and/or malfunction.
6. Do not overload chamber racks
7.Space test samples appropriately
Maximum load for unit racks is 15kg
each, when load is evenly distributed.
Place items as evenly and as far apart
as possible and do not exceed
maximum load rating.
Bunching items together to get more onto a
rack may prevent proper temperature
control.As a rule of thumb, use
approximately 70% of entire rack space or
less, when placing items, to ensure better
temperature control accuracy.
Test
Samples
Rack
1
5
k
g
Max. Load 15kg