SICK DUSTHUNTER T

GM35 Operating Instructions
Probe Model
Troubleshooting
92 © SICK MAIHAK GmbH • Germany · All rights reserved 8009389/07-2006
9.3.3 Warning messages for the GM35 SR unit
ZERO com. CO
2
/H
2
O module not connected to
motor of zero-point reflector.
‡ Check whether the cable connection is secure.
Secure it if necessary.
‡ If fault cannot be corrected:
contact the Service department.
Error message Component/possible cause Remedy
Warning message Component/possible cause Remedy
Chopper freq. Chopper wheel frequency is outside
the tolerance
‡ Replace lamp module. Contact the Service de-
partment.
CO Low sig. • CO measurement channel contami-
nated
• Dust content too high
• IR source aged
‡ Check contamination; clean the optical
boundary surfaces (see page 68f)
‡ Check the optical alignment, page 72
‡ Replace IR source or measurement module; if
necessary contact service department
CO not ready • CO measurement is not ready
• Signal overridden
• Warm-up phase
‡ Wait approx. 30 min. until the operating tem-
perature has been reached
‡ Contact Service department if necessary
CO2 Reference Deviation of control vaues measure-
ment too high
‡ Carry out zero alignment, see page 54
‡ Carry out relevant maintenance, see chapter 8,
page 65
‡ Contact Service department if necessary
H2O Low sig. • H
2
O measurement channel conta-
minated
• Dust content too high
• IR source aged
‡ Check contamination; clean the optical
boundary surfaces (see page 68f)
‡ Check the optical alignment, page 72
‡ Replace IR source or measurement module; if
necessary contact service department
H2O not ready • CO
2
/H
2
O measurement not yet
ready
• Signal overridden
• Warm-up phase
‡ Wait approx. 30 min. until the operating tem-
perature has been reached
‡ Contact Service department if necessary
H2O Reference Deviation of control vaues measure-
ment too high
‡ Carry out zero alignment, see page 54
‡ Carry out relevant maintenance, see chapter 8,
page 65
‡ Contact Service department if necessary
HYGRO com No connection of CO
2
/H
2
O modules
with the humidity sensor
‡ Check correct cable connection and correct
plug-in connection; repair if necessary
‡ Switch to substitute value
‡ Contact Service department if necessary
HYGRO internal No communication to the onboard hu-
midity sensor
• Sensor defective/broken cable
‡ Check cable connection
‡ Remove sensor