Product Service 816-333-8811 or 1-800-522-7658
37
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 known 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.
Low line limit may be lowered in 5 increments of approximately 2 to
3V increments for 115V models or disabled.
Low line limit may be lowered in 5 increments of approximately 4 to
5V increments for 230V models or disabled.
High line limit may be raised in 5 increments of approximately 2 to
3V increments for 115V models or disabled.
