Ulvac SW112-C User manual

D/N. MDOM094E, 2021AL01 ULVAC CRYOGENICS INCORPORATED
Helium Compressor Unit
Instruction Manual
SW112-C
Export Control Policy
When applying a 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 I
INTRODUCTION
Thank you for choosing our products. This instruction manual provides information and
precautions on handling, installation, operation, and maintenance of the product.
This product is intended for use by qualified personnel who recognize shock hazards
and are familiar with the safety precautions required to avoid possible injury. To ensure
proper use of this product, read this instruction manual carefully and keep this manual
close at hand so that you can use for reference during operation.
If you purchased our other products and/or optional devices with this product, read
relevant instruction manuals carefully.
(1) It is strictly prohibited to duplicate or distribute this instruction manual or any of its
parts to a third party without written 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.
(3) If you have any questions or comments on this document, please do not hesitate to
contact us. The phone numbers of local customer support centers are listed at the
end of this manual.

II ULVAC CRYOGENICS INCORPORATED
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.
Low-temperature area present.
There is a risk of frostbite. Do not touch.
CAUTION
WARNING
A warning describes safety hazards or unsafe practices
which could result in severe injury or loss of life.
A caution describes safety hazards or unsafe practices
which could
result in personal injury or equipment
Toxic gas or chemicals used.
There is a risk of severe injury upon contact.
Corrosive chemicals used.
There is a risk of severe injury upon contact.
Flammable gas used.
There is a danger of fire or burn injury.
Explosive gas used.
There is a risk of fire or explosion.
Hazardous voltage .
Electric shock may cause severe injury or loss of life.
Hot heating part present.
There is a risk of burn injury.

ULVAC CRYOGENICS INCORPORATED III
TABLE OF CONTENTS
Safety Instructions ···················································································1
Disposal Considerations············································································2
1. General Description··········································································4
1.1 Specifications···········································································4
1.2 Overview / General description ····················································5
1.3 Instructions for the Electrical System··········································· 11
2. Installation····················································································17
2.1 Conditions for installation··························································17
2.2 Installation ·············································································18
3. Operation·····················································································22
3.1 Start-up operation····································································22
3.2 Shutdown ··············································································22
3.3 Inspections in normal operation··················································22
4. Maintenance·················································································23
4.1 Scheduled maintenance ···························································23
4.2 On-site maintenance································································25
5. Troubleshooting·············································································26
6. Electrical Wiring·············································································29
7. Warranty······················································································30

IV ULVAC CRYOGENICS INCORPORATED
Figures
Figure 1-1 Compressor Front Panel........................................................................... 7
Figure 1-2 Refrigerant Circuit Diagram...................................................................... 9
Figure 1-3 SW112-C Components inside................................................................. 10
Figure 1-4 SW112-C Control Components (Exterior components)......................... 12
Figure 1-5 SW112-C Control Components (Inside)................................................. 13
Figure 1-6 Remote connector pin locations............................................................. 14
Figure 1-7 Signal connector pin configuration......................................................... 14
Figure 1-8 Refrigerator connector pin locations ...................................................... 15
Figure 2-1 Maintenance space (unit: mm)............................................................... 17
Figure 2-2 Cooling water flow and inlet temperature............................................... 21
Figure 6-1 Electrical wiring....................................................................................... 29
Tables
Table 1-1 Compressor Unit SW112-C Specifications............................................... 4
Table 1-2 Control and connection of the compressor unit....................................... 5
Table 1-3 Components and function......................................................................... 8
Table 1-4 List of control components.......................................................................11
Table 1-5 Remote sequence................................................................................... 14
Table 1-6 Remote connectors................................................................................. 14
Table 1-7 Monitor sequence ................................................................................... 14
Table 1-8 Applied connector for remote ................................................................. 14
Table 1-9 Refrigerator connector specifications..................................................... 15
Table 1-10 Connectors for the refrigerator ............................................................... 15
Table 1-11 Safeguards.............................................................................................. 15
Table 2-1 Electric wiring capacity ........................................................................... 19
Table 4-1 Fuse List (Spare fuses are attached to the product).............................. 25

ULVAC CRYOGENICS INCORPORATED 1
Safety Instructions
Ensure to disconnect power before performing installation, maintenance or repair
works. Touching non-isolated parts inside the compressor unit may cause severe
injury including electric shock or equipment damage. Connect the earth wire to Class
C grounding.
This system contains high-pressure helium gas. The gas must be removed before
disassembling for maintenance or disposal. Optional helium charge adopter kit is
required to release helium gas.
Do not use this system in the atmosphere of corrosive gas (such as chlorine). It may
result in damaging human body or equipment failure.
Inside this equipment, there are high temperature areas, such as compressor motor or
discharge line, during operation and immediately after shutdown.
When performing repair or maintenance works, wait until the inside returns to the
normal temperature before start working. If the work starts when it is still hot, there is a
risk of burn injury.
1. Danger of electric shock exists. Do not touch
electric parts.
2. Danger of explosion exists. Do not
expose to corrosive gases.
3. Danger of burn injury exists. Never touch
high temperature surface

2 ULVAC CRYOGENICS INCORPORATED
Disposal Considerations
The equipment and component parts must be disposed in accordance with applicable
local and domestic standards for industrial wastes.
We offer Safety Data Sheet (called SDS) of our products upon your request. For detailed
information please contact our Service Engineering Division or the nearest customer
support center.
WARNING
Do not disassemble, pressurize, heat, and/or throw into fire. The adsorber may
explode.
For safe disposal of an adsorber, follow the procedures below.
1)
Depressurize high pressure helium gas in the adsorber to an ambient
atmospheric pressure. To do so safely, connect the proper tools such as our
charging adaptor (for refrigerator maintenance).
2) Before proceeding with disposal work, remove the couplings of the adsorber to
visually confirm that it has been depressurized.

ULVAC CRYOGENICS INCORPORATED 3
Unpacking and Inspection
Upon receiving the compressor unit SW112-C, immediately check for any damage that
may have occurred during shipping according to the following procedures.
1. Check for any visible dents, etc., on the outside the packaging for shipping. Keep the
packaging for shipping in case you need to make a claim regarding dents, etc.
2. Remove the packaging and check for dents, etc., on the compressor unit.
Never tilt the compressor unit more than 30 degrees.
Tilting the compressor may result in compressor failure or oil leaking into the helium gas
pipes.
Make sure there are no defects in the following (a) - (c).
(a) Overall exterior
(b) Oil leaks
(c) Helium gas charged pressure
Make sure the pressure gauge indicates 2.0 MPa at 20 °C.
If the pressure gauge indicates less than 2.0 MPa, add helium gas according to the
procedures described in 4-1-2 Charging Helium Gas.
If the pressure gauge indicates 0MPa, some impurities may be mixed in the helium gas and
the unit must be replaced.
Please contact us if any problem is observed.
Shipping
When shipping the compressor unit, follow the steps below.
・Attach protection caps to all self-sealing couplings for safe shipping.
・Use the packing materials as same as used at the time of shipment.
・Securely and correctly pack the compressor unit.
・Attach “No Tilting” and “This Side Up” caution labels.

4 ULVAC CRYOGENICS INCORPORATED
1. General Description
1.1 Specifications
Table 1.1 shows the specifications for Compressor Unit SW112-C.
Table 1-1 Compressor Unit SW112-C Specifications
Compressor unit SW112-C
Power source φ, V, Hz Single phase, 100, 50/60
Power consumption *1 kW 1.0/1.2
Starting current *1 A 56/52
Operating current *1 A 11.0/12.2
Compressor nominal output *2 W 700
Ambient Condition
Installable room temperature ºC 4-38
Installable room humidity %Rah 88 % or lower
Cooling Water
Flow rate *3 L/min 2 – 5
Inlet temperature *3 °C 5 – 35
Refrigerant Helium gas 99.999 % or purer
Refrigerant filling pressure MPa 2.0±0.05 (20°C)
Size
Height mm 396 (including casters)
Width mm 373
Length mm 449
Weight kg 53
Connection
Cooling water [WATER IN] PS 3/8” female
Cooling water [WATER OUT] PS 3/8” female
Refrigerant [SUPPLY] 1/2”self-sealing coupling
Refrigerant [RETURN] 1/2” self-sealing coupling
Scheduled maintenance intervals Change adsorber every 30,000 hours
Notes 1. Value when connected with a cryopump unit.
2. Motor output when measured with R-22.
3. Refer to “2.2.4 Cooling Water” for detail of cooling water temperature or
flow rates.