Stuart SI500 Manual De Instrucciones página 5

4.3 Connecting the SI600C to a recirculating
chiller
In order to incubate at below ambient conditions,
the SI600C must be connected to a recirculating
chiller unit. Ensure that the chiller unit is situated
on a solid surface and does not vibrate when the
incubator is operating at maximum rpm. Connect
the condensate tubing to the condensate outlet
pipe and the other end to a waste collection
container positioned lower than the condensate
outlet pipe. Ensure the condensate collection
container can hold a liquid volume at least as
great as the chiller coolant volume.
Attach the 90° connectors supplied to the two
connectors on the rear of the unit labelled INLET
and OUTLET. Connect the 1.5m lengths of 8mm
I.D. EPDM tubing to the connectors and secure
with jubilee clips. Connect the other ends of the
connectors to the ports of the chiller unit
ensuring there are no kinks in the tubing to
restrict flow; do not over-tighten.
Outlet port
Inlet port
To chiller
Optimum performance will be obtained with the
connection tubing as short as possible. Observe
the specification of the chiller for acceptable
tubing lengths and maximum head height. Place
the chiller in a position which is safe in order to
prevent accidental collision.
Coolant
For temperatures below 10°C, or as
recommended in the chiller manual, a coolant
must be used. A mix of 1:1 laboratory grade
ethylene glycol and water is recommended. DO
NOT use deionised water.
WARNING:
When using coolant below 0°C, there is the
potential for condensate to form on the tubing.
This can be reduced by insulating the tubing.
Ensure all tubing is kept free of kinks and
restrictions and is held tidily in place using tie
wraps if necessary. Check for leaks by starting up
the chiller pump before finally fixing the SI600C
in position on the bench.
4.4 Fixing feet brackets (SI600 and SI600C)
To prevent the unit from vibrating or moving
during use, the SI600 and SI600C must be
secured to the bench top using feet brackets.
Two feet brackets are provided for securing the
rear feet.
90° Connectors
Condensate
outlet pipe
Condensate
collection
container
Ensure the unit is positioned correctly. From the
sides of the unit, slide the feet brackets around
each of the rear feet (1). Secure in place by fixing
with two No.8 x 20mm screws (2).
Connect to the electricity supply - DO NOT
SWITCH ON.
4.4 Loading
Caution: keep loose items clear of the door
before opening.
Open the door. Pull the two black sprung release
knobs either side of the cradle outwards towards
the sides of the incubator and draw the cradle
platform out of the incubator towards you.
❖ Do not use flammable coolants.
❖ C onsult the chiller manual to ensure a
compatible fluid is used.
❖ The fluid must be compatible with the
incubator's wetted parts which are
brass, copper, EPDM rubber and nickel.
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