Casella Evolution CM2010 Servicehandleiding - Pagina 13

Blader online of download pdf Servicehandleiding voor {categorie_naam} Casella Evolution CM2010. Casella Evolution CM2010 16 pagina's. Internal zero and span module ozone analyser

Pagina afdrukken

3.3 Troubleshooting

DC Power Supply Voltages

Before consulting the troubleshooting section below, verify that the DC power supply voltages on the
Heater Control PCA are present and within the specifications given for each voltage listed in the follow-
ing table.
Voltage
+12 V
+10 V
-10 V
+5 VR

Troubleshooting Guide

Use this troubleshooting guide to find the symptom, then follow in order the possible causes and solu-
tions. When the problem is identified, take the corrective action recommended. If you cannot identify
the problem, E-mail technical support – [email protected].
Symptom
The DC voltages in Table 3-3
DC Power supply voltag-
esabove are not present.
Low span.
High span.
HB4014-02
EVOLUTION SERIES CM2010 OZONE ANALYSER
Table 3-3 DC Power supply voltages
DMM (–)
AGND (TP4)
AGND (TP4)
AGND (TP4)
AGND (TP4)
Possible Cause
Power cable not connected.
Failed IZS Control PCA.
Bad calibration.
Dirty quartz tube.
High flow.
Bad lamp.
Failed IZS Control PCA.
Bad calibration.
Low flow.
DMM (+)
J1-22
TP3
TP1
J4-15
Solution
Verify that the IZS control cable is
connected to Vreg connector J5.
Replace the IZS Control PCA.
Re-calibrate the O
Clean the quartz tube.
Check flow (refer to
section).
Replace the UV lamp (refer to
"Lamp
Replacement" on page 15).
Replace the IZS Control PCA
Re-calibrate the O
fer to the CM2010 IZS Module
Operation Instructions.
Check flow (refer to
section).
Response
+12 ±0.5 V
+10 0.2 V
-10  0.2 V
+5 ±0.25 V
generator.
3
"Flow
Test"
generator. Re-
3
"Flow
Test"
13