CM4 Four-Point Continuous Monitor
CM4 Technical Manual
B-5
Fault
No.
Description
Possible Cause
Corrective Action
Relay
Activated
Beeping
Audio
Alarm
Yellow
Status
LEDs
26
Pump Failure
Pump Malfunction
Set Pump Limits procedure not performed
Pump inlet vacuum high, indicating filters
clogged
Pump exhaust pressure high, indicating
blocked exhaust line
Low line voltage
Cycle power
Check pump limits (
Change internal filters (
Check operation with exhaust line disconnected to isolate
problem
FAULT
(RY10)
On
Solid
27
Flow Failure PTx
Point flow set incorrectly
Chemcassette
®
not installed correctly
Sample line kinked or obstructed
Internal tubing, filter or valve clogged
kinked or obstructed
Reset flow in Set Flow (
)
Reinstall Chemcassette
®
carrier (
)
Disconnect sample line if unable to flow balance
Change internal filters (
FAULT
(RY10)
On
28
Lock On Time Out
Point lock on exceeded idle time for
remaining points
Disable points not desired (
)
Reprogram idle time out (
)
FAULT
(RY10)
Off
29
Unable to Print
Printer not connected
Printer not online
Printer out of paper
Data overload caused by “letter quality”
selection on the printer
Make sure printer is connected
Make sure printer is online
Reload printer
Make certain the printer is set on “draft quality” mode
MAINT
(RY8)
Off
30
Print Overflow
Print mode set to continuous
Print mode set to “letter quality”
Change printer format to draft mode
MAINT
(RY8)
Off
31
Gas Table Error
Invalid gas table stored in EEPROM
Call Local Service Agent
FAULT
(RY10)
On
Table B-1: CM4 Fault Listings (cont’d)
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