CM4 Four-Point Continuous Monitor
CM4 Technical Manual
B-6
Fault
No.
Description
Possible Cause
Corrective Action
Relay
Activated
Beeping
Audio
Alarm
Yellow
Status
LEDs
32
Tape ADV ERR
Electrostatic discharge on circuit board
Sensor problem
Cycle power Off then On
Call Local Service Agent
FAULT
(RY10)
On
33
Opt. Unstable PTx
Ground noise in the installation
Optics board set
Ensure proper grounding - check all connections
Check board connections
Call Local Service agent
FAULT
(RY10)
On
34
New PROM Detected
Software version has been revised or
updated
Call Local Service Agent
Note:
If this fault appears, user-programmed information has
reverted to factory-set selections
FAULT
(RY10)
On
35
Pyrolyzer Temperature Fail PTx
Defective heater, fuse or thermocouple Call Local Service Agent
FAULT
(RY10)
No
Pulsed
37
Transport Error
Tape is torn, spent or not correctly installed Install replacement tape or reinstall tape
FAULT
(RY10)
No
Solid
38
Transport Warning
Hub loose on sensor shaft
Pending tape advance problem
Tighten hub on tape sensor shaft
Call Local Service Agent
MAINT
(RY10)
No
Off
39
Loss of Flow PTx
Tubing is blocked or plugged
Check sample lines
Perform flow balance
FAULT
(RY10)
No
Pulsed
40
Pyro Check Valve Failure PTx
(CM4-P only)
Leaking check valve
Verify integrity of sample line
Replace sample line
MAINT
(RY8)
No
Off
41
Line Leak PTx
Leak in sample line
Verify integrity of sample line
Replace sample line
MAINT
(RY8)
No
Solid
42
Chemcassette
®
Expired
Chemcassette
®
past expiration date
(continues monitoring - no accuracy
guarantee) (See
)
Replace Chemcassette
®
MAINT
(RY8)
No
Table B-1: CM4 Fault Listings (cont’d)
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