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Installation and Operation
Setup/Tuning Loop
(Digital One/Digital Plus)
The Setup/Tuning Loop is used to tune the controller's PID parameters (
HEAt
);
enable/disable auto restart (
AStrt
); determine how the unit will react when a
fault occurs (
FAUlt
) — either shut down (
on
) or continue to run (
oFF
); and to
configure the temperature display to indicate to a tenth or a hundredth of a
degree (
rES
).
To enter the loop you must be displaying the reservoir fluid temperature, press
and hold
and then press
. The display will indicate
tunE
. Use the arrow
keys to sequence through the loop and to change a display. Use
to
confirm any changes.
Changes made in the Tuning/Setup Loop take affect when
Yes
is pressed at
the
StorE
prompt. Pressing
No
at the prompt aborts
all
changes.
Thermo Fisher recommends that only
a qualified technician change PID
parameters. Incorrect PID values will
hamper unit performance.
See page
42 for factory preset PID values.
Factory preset = off
Factory preset = off
Factory preset = 0.1
