Ulvac EMP-20W, Instruction Manual

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20 ULVAC CRYOGENICS INCORPORATED
6.4.2 Connection of EMP-20W Cooling Water Hoses
Depending on the water, scale might accumulate inside the cooling water tube, or the
tube might be corroded. It is recommended to use water circulation system when
there is such concern.
CAUTION
1) Connect the attached cooling water joint to the cooling water IN and OUT connectors.
The screw size of the connector is R3/8. Place seal tape on the screw part.
2) Connect the cooling water joint to the cooling water supply side.
3) Connect the cooling water hose to the water supply side and the EMP-20W water IN
connector, and water discharge side and EMP-20W water OUT connector.
4) When the connections are made, open the main valve of cooling water supply to check
that the water flow is correct and no leak is seen in the coupling or hoses in the joint
part of couplings or hose.
5) When you use cooling water circulation system, set the water temperature at 20 °C.
CAUTION
Water may leak if the connection between cooling water joint and hose is too loose.
CAUTION
Be sure to connect the hose to the correct port. Wrong connection may result in
breakage of cooling water tube and leakage of water.
(*)Refer to “7. Utility” for the allowable range of cooling water.
6.4.3 Connection of Nitrogen gas tube
Place Nitrogen gas tube from the bottom hole and connect it to the gas connector of
Dewar along Helium gas pipe. Connect the other side to the Nitrogen gas supply port of
a Nitrogen gas generator.
6.4.4 Connection of “Nitrogen gas generator” remote cable
Connect a remote cable to the remote connector inside EMP-20W and the signal connector
from the back of GN-15i or “PRESSURE SWITCH OUT” connector on the back of
IM-120.