TM 10-4610-232-12
Table 3-1. Operator Troubleshooting Guide (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
CARBON MONOXIDE (CO) MONITOR.
1.
2.
3.
4.
5.
WARNING
Inhalation of carbon monoxide can cause serious illness or death.
Green SYSTEM OK light is off and neither ALARM 1, ALARM 2, or audio alarm are on.
Step 1. Check HEATER POWER SUPPLY ON/OFF switch.
Turn ON.
Step 2. Check monitor POWER switch and CIRCUIT BREAKER.
Open monitor front panel and turn POWER toggle switch ON. Press monitor CIRCUIT BREAKER.
Step 3. Notify unit manitenance.
NOTE
CO monitor is set to alarm at 25 ppm for Alarm 1 and 50 ppm for Alarm 2. The OSHA
maximum safe level for an 8 hour shift is 50 ppm.
Monitor reading is erratic.
Step 2. Notify unit maintenance.
Monitor audio alarm keeps sounding.
Step 1. Press RESET button on bottom of monitor.
Monitor display indicates “EEE” or “E” or is blank and the alarm is sounding.
Step 1. Press RESET on bottom of monitor.
Step 2. Notify unit maintenance.
Monitor alarms at wrong set points.
Step 1. Notify unit maintenance.
DISTRIBUTION PUMP.
1. Distribution pump won’t start.
Step
Step
Step
1. Check DISTRIBUTION PUMP circuit breaker.
Switch on.
2. Check DISTRIBUTION PUMP GROUND FAULT RESET.
Push Up.
3. Check DISTRIBUTION PUMP STARTER RESET.
Step 4
Step 5
Step 6
Step 7
Turn on.
Check DISTRIBUTION PUMP ON pushbutton.
Push on.
Check DISTRIBUTION PUMP selector switch (on pump).
Turn on.
WARNING
Turn off DISTRIBUTION PUMP circuit breaker and make certain DISTRIBUTION PUMP OFF
pushbutton is pressed and DISTRIBUTION PUMP POWER ON light is not lit before
proceeding. Failure to do so could result in electrocution.
Check electrical cables.
Clean if dirty, dry if wet.
Notify unit maintenance.
2. Distribution pump motor hums but won’t turn with ambient temperature above 32°F (0°C).
Step 1. Notify unit maintenance.
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