Labconco FreeZone 6 Liter Benchtop Freeze Dry Systems 77520 Series User Manual
Page 46
42
Product Service Domestic 1-800-522-7658, International 816-333-8811
C
C
H
H
A
A
P
P
T
T
E
E
R
R
8
8
M
M
O
O
D
D
I
I
F
F
Y
Y
I
I
N
N
G
G
Y
Y
O
O
U
U
R
R
F
F
R
R
E
E
E
E
Z
Z
E
E
D
D
R
R
Y
Y
E
E
R
R
D
D
I
I
S
S
P
P
L
L
A
A
Y
Y
Your Freeze Dryer has been carefully calibrated and tested before
shipping, however under certain circumstances it may be necessary
to adjust the calibration of the temperature and/or vacuum display
or to modify alarm points. Adjustments may be necessary if the
Freeze Dryer requires service or if it is operating on a line voltage
outside the voltage range at which the alarm was preset. This
DOES NOT mean that the Freeze Dryer may be operated at a
voltage outside the ranges shown in Appendix C.
Temperature and Vacuum Display
An offset may be added to the collector temperature or vacuum
display. Use an accurate traceable reference to compare the
readings.
Temperature offset may be varied ±5°C in 1°C increments.
Vacuum offset may be varied ±0.020 mBar in 0.001 mBar
increments.
Line Voltage Alarm Points
The Freeze Dryer is designed to alarm if the line voltage varies
more than ±10% from nominal line voltage. Models rated to
operate on 115V are preset to alarm if the voltage drops below
approximately 103V or rises above approximately 127V. Models
rated to operate on 230V will alarm if the voltage drops below
approximately 206V or rises above approximately 254V. Some
models are designed to operate below these ranges (see Appendix
C). In these cases it is permissible to lower the low voltage alarm
point to prevent nuisance alarms from occurring.