CSZ ZP 16, Installation, Operation & Maintenance Manual, Page: 53 / 88

OPERATION
Page 4-5
START-UP INSTRUCTION SUMMARY (WATLOW F4 CONTROLLER)
The control section, illustrated in Figure 7, is composed of a Watlow F4 Controller.
Speci
fi cations for the Controller may be found in the Watlow F4 User's manuals
located on the digital media included in this binder.
1. Turn the power switch ON .
2. Load your test sample into the chamber.
3. Enter the Single Set-Point Operation Temperature.
4. Enter the Single Set-Point Operation Humidity if applicable.
5. Turn ON the conditioning system
The following start-up
instructions are written
for the F4 controller.
For optional controller,
please refer to Speci
fi c
Instructions in your
controller manual.
NOTE
SUMMARY FOR STEP-BY-STEP SET-POINT OPERATION
These instructions will enable the operator to use the Watlow F4 Programmer/
Controller in a single set-point operation. The User's Manual for the Watlow F4
Programmer/Controller should be reviewed for more detailed operation.
Single Set-Point Operation - Temperature
1. When Turning the Main Power Switch ON
a. This will supply power to the Watlow F4 Controller, Product Hi/Low Limit
and chamber light. The Watlow F4 controller will perform a 5-10 second
start-up self-test. The upper display will be blank and the lower display will
show Watlow F4 and current software revision. Wait for the completion of
the self-test.
2. When operating the chamber, the PGM/OFF/ON switch determines if event No.
1 must be on to run the chamber.
a. ON
The PGM/OFF/ON switch should be set in this position when running single
set-points or when operating in a program mode without using events to
turn on-off option features.
b. PGM
The PGM/OFF/ON switch must be set in this position when running a
program pro
fi le where events are used to turn features on and off.
3. Use the arrow keys to navigate through the lower display and place the arrow
cursor on setpoint 1.
a. Use the

right arrow key to enter the setpoint fi eld.
b. Use the

up and

down arrow keys to change the setpoint.
c. Use the

left or

right or arrow keys to exit the setpoint fi eld.
S w i t c h m u s t b e
on manual mode
for single set-point
operation.
NOTE
Humidity performance
will be affected if live
loads are placed in the
chamber when trying
to achieve certain
humidity levels.
NOTE
When running at high
humidity levels for
an extended period
of time, the tip of the
humidity sensor can
become saturated,
resulting in erroneous
readings. To correct
this condition, it is
recommended that
the tip be dried out by
turning the humidity
system off and raising
the temperature to
250ºF for 10 minutes.
The sensor accuracy
will be restored by
evaporating the water
out of the porous
c o v e r o v e r t h e
sensing element.
NOTE