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Tabletop Freeze Dryer
DC41A/B
Instruction Manual
Second Edition
Thank
you
for
tabletop freeze dryers from Yamato Scientific
Co., Ltd.
For proper equipment operation, please read
this instruction manual thoroughly before
use. Always keep equipment documentation
safe and close at hand for convenient future
reference.
Warning
:
Read instruction manual warnings and
cautions carefully and completely before
proceeding.
Yamato Scientific Co., Ltd.
choosing
DC41
series
Printed on recycled paper
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Summary of Contents for Yamato DC41A
- Page 1 Instruction Manual Second Edition Thank choosing DC41 series tabletop freeze dryers from Yamato Scientific Co., Ltd. For proper equipment operation, please read this instruction manual thoroughly before use. Always keep equipment documentation safe and close at hand for convenient future reference.
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Page 2: Table Of Contents
TABLE OF CONTENTS 1. SAFETY PRECAUTIONS ................1 Explanation of Safety Symbols ....................1 Symbol Glossary ........................2 Warnings & Cautions ........................ 3 2. PRE-OPERATION PRODEDURES ............... 4 Precautions & Preparations ...................... 4 Assembly & Operation Prep...................... 7 3. COMPONENT NAMES & FUNCTIONS............8 Main Unit Overview ........................ -
Page 3: Safety Precautions
1. SAFETY PRECAUTIONS Explanation of Safety Symbols A Word Regarding Symbols Various s ymbols are provided throug hout this t ext and on equ ipment t o ensure safe o peration. Failure to comprehend t he operational hazards and risks associated with thes e symbols ma y lead to adve rse results a s explained below. -
Page 4: Symbol Glossary
1. SAFETY PRECAUTIONS Symbol Glossary Warning Danger!: High Danger!: Danger!: Danger!: General Warning Voltage Extremely Hot Moving Parts Blast Hazard Caution Caution: Caution: Do Not Caution: Burn Caution: May General Caution Electrical Shock Heat Without Hazard! Leak Water! Hazard! Water! Caution: Water Caution: Toxic Only... -
Page 5: Warnings & Cautions
1. SAFETY PRECAUTIONS Warnings & Cautions Warning Never operate equipment near combustible gases/fumes. Do not install or operate DC41 unit near flammable or explosive gases/fumes. Unit is NOT fire or blast resistant. Negligent use could cause a fire/explosion. See “List of Hazardous Substances (P.20). Always ground equipment. -
Page 6: Pre-Operation Prodedures
Connect grounding wire (green) from Standards, Section 19, class D (Grounding ground adapter to a ground terminal. Resistance Max. 100Ω) is required in Japan. Contact a local dealer, electrician, or Yamato Sales office for location-specific electrical requirements. 2. Choose an appropriate placement area. -
Page 7: Pre-Operation Procedures
2. PRE-OPERATION PROCEDURES Precautions & Preparations 3. Place in a location free of flammables and explosives. Never place near flammables or explosives. Unit is NOT fire or blast resistant. Simply switching the power “ON” or “OFF” can produce a spark, which could relay during operation, causing a fire or explosion when near flammable or explosive fluids, chemicals... - Page 8 Failure to do so may result in fire or electric shock. • Contact a local dealer or Yamato sales office for information about replacing power cable if it is damaged. • Always connect power cable to appropriate facility outlet or terminal.
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Page 9: Assembly & Operation Prep
☞Use a vacuum pump having a displacement of 50/min or more and maximum pressure of 1.0X10 ☞Recommended vacuum pump: PD52 (from YAMATO Scientific) Displacement volume: 50/min Maximum vacuum pressure: 6.7×10 Rear View Inlet pipe diameter: 18mm (or equivalent) -
Page 10: Component Names & Functions
3. COMPONENT NAMES & FUNCTIONS Main Unit Overview Rear View ① Timer ② Buzzer Switch ③ Purge Switch ④ Power Switch ⑤ Vacuum Valve ⑥ Chamber Lid ⑦ Vacuum Chamber ⑧ Vacuum Gauge ⑨ Power Cable ⑩ Fuse ⑪ Vacuum Hose Fitting... -
Page 11: Control Panel
② Buzzer Switch: sounds an alert when timer is up, if set in the ON position. ③ Timer: Sets a time on the freeze-dry process. Set according to sample/container size and type. ④ Vacuum Gauge: measures decompression in vacuum path and displays reading in MPa (DC41A) or Pa (DC41B). -
Page 12: Operation Procedure
4. OPERATION PROCEDURE Main Operation Turn purge switch OFF. 1. Close purge valve 2. Close vacuum valve(s) Rotate valve knob so that “VENT” is in the top position. 3. Start vacuum pump Turn vacuum pump ON. Confirm that chamber is sufficiently decompressed by checking the vacuum gauge (10Pa-20Pa). -
Page 13: Desiccant Compound (Molecular Sieve) Redrying & Storage
(1) If desiccant compound is not entirely spent: A) Remove condenser from chamber and store condenser with compound in a sealed container, such as the condenser storage container from Yamato Scientific P/N 212576, or empty compound into an airtight container and store. -
Page 14: Handling Precautions
If unit begins emitting smoke or abnormal odors for reasons unknown, turn off power switch immediately, disconnect power cable from power supply, and contact a local dealer or Yamato sales office for assistance. Continuing to operate without addressing abnormalities may cause fire or electric shock, resulting in serious injury or death. - Page 15 Leaving compound inside of unit, unsealed (purge switch ON), for any amount of time will allow moisture from the air to be absorbed, saturating compound and rendering it unusable until it is re-dried. Using the optional condenser storage container from Yamato Scientific, P/N 212576 is recommended. Likewise, place condenser with desiccant compound into chamber and begin operations as quickly as possible.
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Page 16: Maintenance & Disposal Procedures
Dispose of or recycle this unit in a responsible and environmentally friendly manner. Yamato Scientific Co., Ltd. strongly recommends disassembling unit, as far as is possible, in order to separate parts and recycle them in contribution to preserving the global environment. -
Page 17: Troubleshooting
7. TROUBLESHOOTING... -
Page 18: Service & Repair
Guaranteed Supply Period for Repair Parts Guaranteed maximum supply period for repair parts is 7 (seven) years from date of discontinuation for DC41A/B tabletop freeze dryers. “Repair parts” is defined as components which, when installed, allow for continued unit operation. -
Page 19: Specifications
(molecular sieve) 2.5kg Fuse Instruction manual ※1 Max possible with 2.5kg molecular sieve compound added. ※2 Performance based on using Yamato Scientific 120mm flasks with 10ml of sample in each container. Results may vary depending on sample type/size and container type/size. -
Page 20: Wiring Diagram
10. WIRING DIAGRAM Wiring Diagram Component List Symbol Component Name Buzzer Fuse Purge Valve Power Switch Purge Switch Buzzer Switch Timer Thermocouple Vacuum Gauge *DC41B only. -
Page 21: Reference Data
11. REFERENCE DATA Freeze Dry Process Data... -
Page 22: List Of Hazardous Substances
12. LIST OF HAZARDOUS SUBSTANCES Never attempt to process explosives, flammables or any items which contain explosives or flammables. ①Nitroglycol, Glycerine trinitrate, Cellulose Nitrate and other explosive nitrate esters ②Trinitrobenzen, Trinitrotoluene, Picric Acid and other explosive nitro compounds ③Acetyl Hydroperoxide, Methyl Ethyl Ketone Peroxide, Benzoyl Peroxide and other organic peroxides ④Metallic Azide, including Sodium Azide, etc. -
Page 23: Limited Liability
Always operate equipment in strict compliance to the handling and operation procedures set forth by this instruction manual. Yamato Scientific Co., Ltd. assumes no responsibility for malfunction, damage, injury or death resulting from negligent equipment use. Never attempt to disassemble, repair or perform any procedure on DC41 units which are not expressly mandated by this manual.
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