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Liquid Nitrogen Generator
Instruction Manual
EMP-07A/07W
Export Control Policy
When applying our refrigerator to a cryocooler for optical sensors, the
cryocooler falls under row 6.A.2.d.2 of the control list established by
The Wassenaar Arrangement, which is equal to row 10(2) of
appended table 1 of Japan's Export Trade Control Order.
Customers must follow all related rules and regulations such as
Foreign Exchange and Foreign Trade Act and take appropriate
procedures when exporting or re-exporting our refrigerators.
ULVAC CRYOGENICS INCORPORATED
D/N.MJOM115E, 2022.12
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Related Manuals for Ulvac EMP-07A
Summary of Contents for Ulvac EMP-07A
- Page 1 1 of Japan’s Export Trade Control Order. Customers must follow all related rules and regulations such as Foreign Exchange and Foreign Trade Act and take appropriate procedures when exporting or re-exporting our refrigerators. ULVAC CRYOGENICS INCORPORATED D/N.MJOM115E, 2022.12...
- Page 3 (1) It is prohibited to duplicate or distribute this instruction manual or any of its parts to a third party without permission from ULVAC CRYOGENICS. (2) Information in this document is subject to change without notice due to specification change or the improvement of the product.
- Page 4 Safety Conventions Our products have been designed to provide extremely safe and reliable operation when properly used. Following safety precautions must be observed during normal operation and when servicing them. A warning describes safety hazards or unsafe practices which WARNING could result in severe injury or loss of life.
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Page 5: Table Of Contents
Component Description ································································· 6 Front view of EMP-07A/07W (Figure 2-1)··································· 7 Operation panel of EMP-07A/07W (Figure 2-2) ··························· 7 Inside view of the EMP front door and lower panel (Figure 2-3) ···· 10 EMP-07A/07W Electrical circuit (Figure 4-4) ····························· 12 EMP-07A/07W top surface ······················································... - Page 6 Electric Wiring ············································································ 21 Operation ··················································································· 23 Checks prior to operation ······················································· 23 Operation preparation ··························································· 23 Shutdown ············································································ 24 When suspending for long time (for 1 to 2 weeks) and resuming ··· 24 Corrective action in the event of an error ·································· 25 Dispense Liquid Nitrogen Manually ···············································...
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Page 7: Safety Instructions
The volume of nitrogen gas is 700 times of liquid nitrogen. Confining atmospheric pressure liquid nitrogen in an airtight space produces high-pressure gas as high as 700 Atm, possibly resulting in explosion. Use liquid nitrogen in the condition constantly open to air. ULVAC CRYOGENICS INCORPORATED... - Page 8 4. Danger of burns or frostbites: Never touch high temperature and ultra-low temperature parts. Liquid nitrogen provides temperature as low as -196°C. If liquid nitrogen is directly handled, frostbites, loss of sight, and others are foreseen. Be sure to wear leather gloves, goggles, trousers without turnips, etc. to handle liquid nitrogen.
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Page 9: Disposal Considerations
When the refrigerator unit is contaminated by toxic or dangerous gases, you must contact your safety supervisor at the time of disposal, and follow the instructions to remove hazardous substances before disposing. We provide Safety Data Sheet (SDS) of our products upon your request. Please contact us when necessary. ULVAC CRYOGENICS INCORPORATED... - Page 10 This page intentionally left blank.
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Page 11: General Description Of The System
SA112-C, and “EMP-07W” with water-cooled compressor SW112-C when needed to be specified. Helium compressor (SA/SW112-C) This unit is installed at the bottom inside the EMP-07A/07W, compresses helium gas to supply to the cold head to provide cryogenic temperatures. It is automatically turned on and off by the control circuit of EMP-07A/07W. -
Page 12: Component Description
Display of SA112-C 空気吸い込み口 ＳＡ１１２表示部 EMP-07W has no air inlet (SW112-C displays the port as the compressor unit same content as well.) is water-cooled SW112-C. Figure 2-1 Front view of EMP-07A ＲＵＮ／ＳＴＯＰ ＲＥＳＥＴ ＣＯＭＰ．ＡＬ． ＯＲ ４０ ＧＮ２ ＡＬ． ３０ Ｍａｉｎｔｅｎａｎｃｅ ＡＵＴＯ... -
Page 13: Front View Of Emp-07A/07W (Figure 2-1)
Front view of EMP-07A/07W (Figure 2-1) Emergency off button :Press this button to interrupt power supply to the control circuit to stop operations such as liquid nitrogen transfer, etc. Do not use the emergency off button except for emergency. Front door :Remove two screws to open this door. - Page 14 function with our level sensor. When automatic supply is activated, white light turns on. MANU START : Press this button to manually dispense liquid nitrogen from LN2 manual dispense port. (To be referred to as “manual dispense”) The manual dispense is terminated automatically in 10 minutes.
- Page 15 RUN/STOP Switch PRESS.AL.ランプ PRESS.AL light He PRESSUREMETER ＨＯＵＲ ＭＥＴＥＲ ＲＵＮ ＲＵＮ／ＳＴＯＰ ＴＥMP．ＡＬ． He GAS CHARGE Ｌ Ｒ ＰＲＥＳＳ．ＡＬ． Compressor コンプレッサー Ｈｅ ＰＲＥＳＳＵＲＥＭＥＴＥＲ SA/SW112-C ＳＡ１１２ Ｈｅ ＧＡＳ ＣＨＡＲＧＥ (SA112-C in this figure) Figure 2-3 Inside view of EMP-07A front door and lower panel ULVAC CRYOGENICS INCORPORATED...
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Page 16: Inside View Of The Emp Front Door And Lower Panel (Figure 2-3)
Terminal 端子台 block Figure 2-5 Electrical circuit Figure 2-5 EMP-07A Inside view of the EMP front door and lower panel (Figure 2-3) Liquid nitrogen dewar :Stores liquid nitrogen (Maximum 40 litters). Cold head (S030Z) :The cold head works in conjunction with the compressor to generate ultra-low temperature. - Page 17 PRESS.AL light :This lights in red when SA/SW112-C is suspended with abnormal helium gas pressure. Hour meter :Displays the total operating hours of SA/SW112-C. Use this information to conduct maintenance work properly. ULVAC CRYOGENICS INCORPORATED...
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Page 18: Emp-07A/07W Electrical Circuit (Figure 4-4)
EMP-07A/07W Electrical circuit (Figure 4-4) Circuit breaker :This is a protective breaker for control circuit of the EMP. It is tripped when an electric leak or short-circuit occurs. Fuse :There are protective fuses (F-1, 2: 3A) for AC circuit and protective fuses (F3: 2A) for DC circuit. -
Page 19: Flow Diagram
Flow Diagram The figure below shows the standard system. Refer to your Specifications and Drawings for the detail. Figure 3-1 Flow Diagram ULVAC CRYOGENICS INCORPORATED... -
Page 20: Specifications
(Non-condensation other than LN2 manual dispense port) The EMP must be installed indoors. EMP-07A is air-cooled type. Clear the space of 600mm from the air intake and 300mm from the exhaust port. PSA (Pressure Swing Adsorption) nitrogen gas generator... -
Page 21: Utilities
Utilities Power source (for EMP-07A/07W) Voltage 100 VAC±10%, single-phase Power capacity 20 A or above Power consumption 1.2/1.4 kW (50/60Hz) Connection Round type crimping terminal for M5 CAUTION Use Class-D earthing for safety. EMP-07W Cooling water (for water-cooled SW112-C only) -
Page 22: Power Source (For Gn-10I)
For connection on main valve coupling, customers are requested to supply Φ6 pneumatic tube fitting. Adjust the supply pressure to be kept above 0.2MPa. CAUTION Keep continuous supply of nitrogen while the EMP-07A/07W is in operation. Suspending the supply may lead to the equipment failure. -
Page 23: Installation
Note: Spaces other than on the back are required only at the time of maintenance and check, and do not need to be cleared all the time. Figure 6-1 Maintenance space for EMP-07A/07W (4) Lock the wheels to fix the equipment. -
Page 24: Connect Gn-10I To Power Source
(3) Turn on the power breaker on the back of the GN-10i. Utility connection of EMP-07A/07W Remove the back panel of EMP-07A and locate holes for utility connection on the bottom. Connect cables through these holes including power-supply, Nitrogen tube and remote cables of Nitrogen generation system, signal cables for automatic supply destination. - Page 25 Section 5.1. (2) Open the lower back panel. (3) Connect the crimping terminal side of power cables to EMP-07A/07W through the holes on the bottom. Make sure that the numbers on the terminal block (X0, Y0, E) correspond to the numbers of power cables and connect them to the terminal block.
- Page 26 CAUTION Do not connect the EMP-07A/07W and other devices to the same circuit breaker. CAUTION Only the personnel who have sufficient knowledge and skill on electric connections or cables can perform the work to extend power cables. 6.3.2 Connect cooling water hoses (for SW112-C only) (1) On the back of SW112-C, remove the black nut of the couplings connected to the cooling water inlet (IN) and outlet (OUT) and remove the sealing plug.
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Page 27: Electric Wiring
Electric Wiring <NOTE> This figure shows a typical example. Figure 7-1 Electric wiring-1 EMP-07A/07W ULVAC CRYOGENICS INCORPORATED... - Page 28 MANUAL START Switch Spare 1003 MANUAL STOP Switch Spare PBL5 1004 1507 eco Switch Spare 1005 Maintenance Reset Switch 1006 GN Booting Signal GN Booting Signal Spare <NOTE> This figure shows a typical example. Figure 7-2 EMP-07A Electric wiring-2 (Sequencer)
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Page 29: Operation
Checks prior to operation Check the following items before starting operation. (1) The power source of the EMP-07A/07W and GN-10i is connected correctly. (2) The air inlet and outlet opening of GN-10i is cleared. (3) (EMP-07W) Cooling water hoses are connected properly and cooling water that meet the requirements flows. -
Page 30: Shutdown
LN2 generation. 8.2.2 Start-up (1) When nitrogen gas is supplied to the EMP-07A/07W, the RUN/STOP button lights in green, SA/SW112-C starts-up and LN2 production starts. (2) Since inside of liquid nitrogen dewar is at room temperature at the initial start-up, it is necessary to take the time to cool inside of the dewar. -
Page 31: Corrective Action In The Event Of An Error
Press RUN/STOP button of EMP-07A/07W to reboot the entire system. (For the system with N2 gas supply) Open the N2 gas main valve to supply nitrogen gas to EMP-07A/07W. Continue nitrogen gas supply to EMP-07A/07W for at least one hour. - Page 32 (1) Turn OFF the RUN/STOP switch of EMP-07A/07W. (2) Check that the supply pressure of N2 gas is between 0.3MPa and 0.99MPa. (3) Use the N2 gas pressure regulator inside EMP-07A/07W to bring the pressure to above 0.25MPa. When the G2 ALARM on the front panel lights off, adjust the pressure to 0.2MPa and flow rate to 10NL/min, turn ON the RUN/STOP...
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Page 33: Dispense Liquid Nitrogen Manually
Connect the joint (coupler joint) of attached flexible hose to LN2 manual dispense port located at the front of EMP-07A/07W. When connecting to the coupler joint, do so while pushing the outer ring part of the EMP-07A/07W side. Dispense liquid nitrogen... -
Page 34: Disconnect Flexible Hoses For Manual Dispense
Disconnect flexible hoses for manual dispense CAUTION When disconnecting flexible hoses, make sure that they return to room temperature. Note that disconnecting hoses right after dispensing liquid nitrogen may result in damaging the O-ring inside the coupler joint. Disconnect flexible hoses in reverse order of connecting procedure. Push down the outer ring of the EMP side joint and pull out the flexible hose to disconnect. -
Page 35: Automatic Transfer Of Liquid Nitrogen
Automatic transfer will also be terminated when the RUN/STOP or AUTO READY of EMP-07A/07W are turned OFF, the LN2 level of EMP-07A/07W is 0%, or transfer of nitrogen gas stops. Liquid nitrogen cannot be dispensed manually during automatic transfer. ... -
Page 36: Eco Mode
the eco mode and wait for 6 minutes until the nitrogen gas generator resumes operation. When the liquid nitrogen level of EMP-07A/07W goes down to 30L (75%) or less, it resumes liquefaction operation automatically. Ten minutes later than the liquid nitrogen level reaches 40L (100%), EMP-07A/07W returns to eco mode. -
Page 37: Maintenance And Inspection
Compressor ✓ GN-10i Filter *2 ✓ GN-10i Solenoid valve *3 Check total operation time of EMP-07A/07W with the hour meter on SA/SW112-C. *1 Normally replacement interval is 10,000hours. As the parts or components inside may deteriorate, replace every 5 years even the total operation is below 10,000hours. -
Page 38: Regular Customer Inspection
12.3 Regular customer inspection In Japan, EMP-07A/07W is high pressure gas manufacturing equipment and the High Pressure Gas Safety Act is applied. Customers are requested to follow the laws or regulations of applicable countries or regions when operating and maintaining this equipment. -
Page 39: Troubleshooting
(RUN/STOP button starts The ambient temperature is Ventilate well around the EMP. too high. ULVAC CRYOGENICS INCORPORATED... - Page 40 Problem Possible Cause Corrective Action Keep the ambient temperature to blink.) below 35 °C by installing fans or air conditioners. Electric parts of Please contact us. SA/SW112-C break down. (6) RUN/STOP blinks and Level sensor of the EMP is Please contact us. EMP does not start damaged.
- Page 41 Please contact us if any is over. problem is found. (13) Other failures Please contact us. ULVAC CRYOGENICS INCORPORATED...
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Page 42: Accessories
14. Accessories The accessories below are included in the carton. EMP-07A/07W Flexible Hose for Dispensing LN2 1 (0.8m) (*) Power Cable 1 (5m) (*) GN Remote Cable (for EMP side) 1 (2m) Nitrogen Gas Tube 1 (5m) Single Head Wrench... -
Page 43: Warranty
As a general rule, diagnosis of failure should be done on site by customer. However, ULVAC CRYOGENICS or our service network can perform this service for an agreed fee upon the customer’s request. There will be no charge if the cause of the breakdown is found to be a fault of ULVAC CRYOGENICS. - Page 44 Since the above services are limited to within Japan, diagnosis of failures, etc are not performed abroad. If you desire the after service abroad, please contact ULVAC CRYOGENICS and consult us for details in advance. 2. Exclusion of opportunity loss from warranty liability...
- Page 45 ULVAC CRYOGENICS INC. www.ulvac-cryo.com 1222-1 Yabata, Chigasaki, Kanagawa 253-0085, Japan <Sales> Tel: +81-467-85-8884 <Service Engineering Division> Tel: +81-467-85-9366 Fax: +81-467-83-4838 ULVAC CRYOGENICS KOREA INC. www.ulvac-cryo.co.kr 107, Hyeongoksandan-ro, Cheongbuk-Myeon, Pyeongtaek-si, Gyeonggi-Do, Korea, 17812 Tel: +82-31-683-2926 Fax: +82-31-683-2956 ULVAC CRYOGENICS (NINGBO) INC.
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- Page 47 Revision History Date Revision Contents 2022 / 12 / 08 2022.12 First edition ULVAC CRYOGENICS INCORPORATED...
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