Intek RheoVac 950 - Manual (Page 21)

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TABLE VI. Troubleshooting Guide
MESSAGE CODE
Description/Symptom
PROBA BLE CAU SE
ACTION
M SG-0
Comm unications not
being received from
probe(s)
1. Improper cable hookup
2. Blown m ain fuse
3. Failed RS -485 circuit
4. Damaged flow sensor
1. Verify plug-in connector properly mated
2. Check all cable connections
3. Che ck F1 fus e on prob e board
4. Con tact factory
M SG-1
Invalid data received
from probe(s)
1. Failed RS-485 communications
component 1. Check wiring
2. Con tact factory
M SG-2
Flow sensor heater
“OFF”
1. Blown h eater fuse
2. Failed electronic component
1. Con tact factory
M SG-3
Relative saturation
sensor power “OFF”'
1. Probe temperature too high
1. Ch eck to be su re prob e tem peratu re is
<160 °F
2. Con tact factory
M SG-4
RS heater “FF”
1. Com ponen t failure 1. Con tact factory
M SG-5
Pressure sensor heater
“FF”
1. Problem with pressu re port
circuitry
1. Con tact factory
M SG-6
Tempera ture alarm
(above 210°F/99°C)
1. Steam in exhaust pipe
1. Remove probe or cool line ASAP!
On ce line h as co oled d ow n and probe is
reinstalled, check unit for proper function
M SG-7
Wet probe
1. This usually indicates a condenser
design or operation problem that
requires corrective action
2. Hogging mode during start-up
1. Con tact factory
M SG-8
RS sensor problem
1. RS sensor has failed 2. Con tact factory
Mass flow output
saturates high, will not
respond to flow changes
1. Flow rate is not within range of
calibration
2. Blown h eater fuse
3. Failed electronic component
1. Contact factory about re-ranging
instrument
2. Replace fuse
3. Con tact factory
Mass flow output
saturates low, will not
respond to flow changes
1. Flow rate is not within range of
calibration
2. Failed electronic component
1. Contact factory about re-ranging
instrument
2. Con tact factory
When using the RheoVac software on a PC, the software may give you a “Communication Error or
Message.” Use the Table VII to determine the source of this message and appropriate action.
Note: If the RheoVac instrument is operating without message indications but output readings are
questionable, please send to Intek by telefax or e-mail the following plant data: turbine back pressure,
hot well temperature, load, and inlet and outlet circulation water temperatures, along with at least 24
hours of data from the RheoVac instrument/probe for the same time period.