OIPT Systems
Oxford Instruments Plasma Technology
System Manual
Services Specifications
Issue 21: January 10
Page 6 of 22
Printed: 6-Jan-10, 8:53
2.1
Recirculation water
WARNING
CHILLERS HAVE COMPONENTS, WHICH BECOME COLD ENOUGH TO CAUSE SERIOUS
INJURY. READ THE MANUFACTURER’S MANUALS BEFORE INSTALLING, OPERATING OR
MAINTAINING CHILLERS, AND ENSURE THAT ADEQUATE PROTECTIVE CLOTHING IS
WORN.
Recirculation water is used in systems where the user does not wish to consume water at
a high rate, or where it is wished to supply water to the system at a constant temperature.
Some systems contain aluminium in direct contact with coolant. These are the
Ionfab
500
Plus
, the
Ionfab
300 Plus
, and
Plasmalab
systems fitted with tables or turbomolecular pumps
with plain aluminium cooling channels. Certain aluminium chambers are also included.
However, the
Ionfab
300 Plus
does not contain aluminium in contact with water, unless it is
in the turbomolecular pump.
In these aluminium-containing systems, it is MANDATORY that the approved coolant is
used at all times. If the approved coolant and installation are not used, the system
warranty will not cover any damage caused by the coolant either directly or indirectly to
the system or to anything else.
It is the customer's responsibility to comply with the above requirement. If the customer
has any doubt as to whether their system falls into this category, they must contact OIPT
for further advice.
In systems that do not contain aluminium components, severe corrosion can still
sometimes occur: water will collect corrosive chemicals, and will be lacking in the oxygen
that protects stainless steel. We strongly recommend that the approved coolant is used. If
an alternative product or water is used, then it is entirely the customer’s responsibility to
check for any signs of corrosion or contaminated water. If the customer’s coolant has not
been approved in writing by OIPT, then the system warranty will not cover any damaged
caused by the coolant either directly or indirectly to the system or to anything else
.
The approved installation and coolant are shown in sub-section 2.1.1 and in Fig 2.1. Note
that the total water flow meter and the isolation valves are recommended for cooling
monitoring and ease of maintenance.
1
Customers should note, for example, that certain types of inhibitor will damage the pumps of heater/chiller units, and that
the use of municipal (drinking water) or deionized water can introduce harmful chemicals into the system. If plain water is
used, distilled water is by far the safest option.
Summary of Contents for OpAL
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