CPS FX1234, Service Manual, Page: 35 / 57

35
5. Pressure Transducer Replacement.
Danger:
Only a qualified service technician should service this equipment. An Electrical Shock hazard is present
which could lead to severe injury or even death.
Disconnect power supply to the
FX134A / FX1234 / FX3030
Series.
a. Service Access: See Section 1 part 2 & 3
b. Locate pressure transducer PT1and PT 2 on low side ball valve manifold block.
c. Unplug pressure transducer from Pressure Transducer PCB below ball valve manifold block.
d. Remove Manifold block PCB if servicing PT2 (see section 3 -12 for instruction.)
e. Remove brass packing nut. If silicone is present then you will have to turn nut and wire harness together to remove
sensor assembly.
f. Remove nut and spring washer from defected assembly for reinstall on new pressure transducer.
g. Check for o ring damage on center post of manifold block where pressure transducer is seated. (oil the o ring)
h. Perform a PT calibration from PT diagnostic test screen. Tap the CPS icon 4 times and the PT icon will appear.
Press PT icon and follow instruction on screen for recalibrating pressure transducers. 70 to 100 PSI will be needed.
PT2 PT1
Unplug
PT
Loosen
Brass Nut
O ring