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Instruction Manual
IM-106-5500, Original Issue
August 2005
CCO 5500
3-2
POWER SUPPLY
VOLTAGE SELECTION
With the mains supply switched OFF, unscrew the four captive screws on the
cover of the power supply and remove the cover. Select the correct supply
voltage using the sliding switch.
TURNING THE
POWER ON
Once the supply voltage switch has been correctly set, switch the power ON.
Check that the power supply rail indication LED illuminates and that the LCD
display is functioning at the signal processor. Replace the lid of the power
supply.
After the initial power on and while the heated source is reaching
temperature, the display will show WAITING FOR REFERENCE. When the
source has reached an adequate temperature for the reference to be
detected, the message STABILIZING REF will be displayed, along with the
frequency and mark/space ratio - see diagnostic mode for details.
The reference frequency will take some time to stabilize (about 5 minutes
from cold startup). When it has been within tolerance for 10 consecutive
measurement cycles, the instrument will automatically change to the
operating mode - this is Mode 1 and is indicated by a number 1 appearing in
the top left hand corner of the LCD. The display will show a reading in ppm -
this is not accurate until configuration has been completed.
Allow 30 minutes before conducting the alignment procedure; this ensures
that the source temperature has stabilized.
ALIGNMENT In order for the instrument to operate satisfactorily, the transmitter and
receiver units need to be aligned. A degree of optical redundancy is built-in
and normal duct movements do not affect the operation of the instrument.
The transmitter and receiver need to be aligned. Remove the receiver from its
air purge and align the transmitter so the red light it emits can be seen at the
other side of the duct (through the receiver purge). Then replace the receiver
and align, using as a guide, the detector levels displayed by the signal
processor in Mode 5. Finally, the transmitter adjustment is 'fine tuned' once
again using the detector levels in Mode 5. All these processes are described
in the following steps.
1. Remove the receiver from its mounting flange. Adjust the alignment of
the transmitter flange until the bright red disc of the transmitter is
located centrally in the field of view, when viewed from the receiver air
purge. Use the adjusting nuts to alter alignment. First adjust in one
plane (using opposite nuts) then adjust in the other plane. Lock the
transmitter flange with the locking nuts.
2. Adjustments to the alignment are made using the four adjusting nuts,
and the flange is locked in position using the locking nuts - these are
illustrated in Figure 3-1.
Disconnect and lock out power before removing the power supply cover.