F-26159-5
©
Copyright 2008 TAC All Rights Reserved.
7
0 to 10 or 6 to 9 V
Range (CP-8552 only)
To check transducer operation:
1. Check for foreign material such as dirt or oil in the air supply. Also check for clogged filters.
Supply air contamination by dirt or oil is the most likely cause of malfunction.
2. Verify that the unit is mounted upright and wired correctly.
3. Verify that 24 Vac power is available and 20 psig (138 kPa) main air is present.
4. Verify with a digital voltmeter that an input signal between 0 to 10 or 6 to 9 V is present
and of correct polarity.
5. Use a digital voltmeter to verify the presence of the correct power supply voltage
between terminals 1 and 2.
6. Adjust the input signal to bottom of range (0 or 6 V).
7. Branch pressure should be 3 psig (21 kPa). If not, adjust start point potentiometer
(Figure-4 ) to obtain a 3 psig (21 kPa) output.
8. Adjust input to top of range (9 or 10 V).
9. Branch pressure should be 15 psig (103 kPa). If not, adjust SPAN potentiometer
(Figure-4 ) to obtain a 15 psig (103 kPa) output.
10. Recheck steps 6 through 9.
11. Unit is functional if correct pressures are indicated. Replace an inoperative transducer
with a functional unit.
MAINTENANCE
Regular maintenance of the total system is recommended to assure sustained optimum
performance.
FIELD REPAIR
Field repair is not recommended. Replace an inoperative transducer with a functional unit.
DIMENSIONAL DATA
Figure-5 CP-8551 and CP-8552 Dimensions.
Dimensions shown are in inches (mm).
4-5/8
(118)
4
(102)
2-1/4
(57)
2-13/16
(71)
9/16
(14)
2-3/4
(70)
5/16
(8)
Side View
Front View
2-5/32
(55)
1/2
(13)
1-21/32
(42)
4-1/4
(108)
1-3/32
(28)
