purged. Before starting the automatic purging using the He-compressor, the compressor main power switch and
the drive switch should be kept ON.
After purging the cold-head from the He-cylinder using He-compressor settings for about 20min, the return valve
can be closed. Close the He-tank, and the supply inlet. Now the Cold-head is ready to be connected to the He-flux
lines. First, connect the flux lines to the He-compressor and then to the cold-head. Make sure that the main power
switch and the front panel switch of the compressor are turned off prior to re-connecting the flux lines. Then turn
off the cold-head drive switch. Now the He-compressor is ready to operate. Switch on the front panel power
switch, then the compressor will start operating. Initially the pressure reading will be around 2.6 MPa, but it will
reduce slowly to 2.2 MPa over about 24h of operation.
SERVICE DETAILS OF THE COLD-HEAD AND THE HE-COMPRESSOR
Serial #
Contact details of the IL, Sumitomo Inc. (SHI Cryogenics):
● Sumitomo (SHI) Cryogenics of America, Inc. ●1500-C Higgins Road, ● Elk Grove Village, ● IL 60007
PH # 847-290-5801 / Fax# 847-290-1984
Personal Contact: "Skica, Aya" <askica@shicryogenics.com>
The weight of the He-compressor is about 100 pounds and the wooden crate has about 250 Pounds. Therefore we need
to contact Fed Ex-freight service for shipping.
Cold-head service:
● Sumitomo Cryogenics of America Inc. ●1833 Vultee Street ● Allentown, PA 18103
● Tel: (610)791-6700 ● Fax: (610)791-3904 ● www.shicryogenics.com
Personal Contact: "Raub, Roy" <rraub@shicryogenics.com>
He-CSW-71 compressor service: ("Skica, Aya" <askica@shicryogenics.com>): Tasks and prices
1. Preventative maintenance: $2,000 (includes oil change, replacement of minor electrical
components, and sheet metal, if required.)
2. Absorber replacement: costs additional $1,500. (The absorber needs a replacement:
Sumitomo advices to do it since compressor is already been passed 40,000h. (max. usage of
absorber is 30,000h), otherwise the oil will be contaminated soon, cause motor to
malfunction..
3. If the motor capsule, heat exchanger, oil separator, or control board require replacement
there is additional cost.
He-compressor Model# CSW-71C, S/N: 47C07087D
Cold head: Model# RDK-408D2, S/N: AJD 07016
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