GM35 Operating Instructions
Probe Model
Troubleshooting
84 © SICK MAIHAK GmbH • Germany · All rights reserved 8009389/07-2006
CO CUVETTE com. CO module not connected to CO cell
motor
‡ Contact the Service department.
CO div. zero Adjustment data of CO module invalid ‡ Contact the Service department.
CO Ampl. max CO instrument amplifier is above the
control range
‡ Check alignment (see page 72).
‡ Clean optical boundary surface (see page 47/
page 68).
‡ Contact the Service department.
CO EEPROM • Invalid parameter set for
CO module
‡ Reset parameters!
– Choose Maintenance mode (maint)
– Choose the Reset parameters menu option
‡ Carry out zero adjust on GM35;
see page 54
‡ Contact the Service department.
CO Motor fault Motor fault on CO filter wheel ‡ Contact the Service department.
CO No signal • CO signals too low; no measure-
ment possible
• Dust content too high
• CO detector or IR source defective
H
2
, CO
2
measuring channels continue
‡ 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 Sig. High CO signals override,
H
2
, CO
2
measuring channels continue
‡ Carry out zero path alignment, page 54
CO temp. detec. Temperature of CO detector is outside
tolerance
‡ Contact the Service department.
El too hot Electronic components are too hot. ‡ Optimize the cooling system for the SR unit.
FILTER com. CO
2
/H
2
O module not connected to
check-filter motor
‡ Contact the Service department.
H2O Ampl. max CO
2
/H
2
O instrument amplifier is
above the control range
‡ Check alignment (see page 72).
‡ Clean optical boundary surface (see page 47/
page 68).
‡ Contact the Service department.
H2O CUVETTE com. CO
2
/H
2
O module not connected to
cell motor
‡ Contact the Service department.
H2O div. zero Adjustment data of the CO
2
/H
2
O mod-
ule is invalid
‡ Contact the Service department.
Error message Component/possible cause Remedy
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