K90100/K90190 Auto Melting Point Unit
Operation and Technical Manual
Page 30
Koehler Instrument Company, Inc.
1595 Sycamore Avenue • Bohemia, New York 11716-1796 • USA
Toll Free: 1-800-878-
9070 (US only) • Tel: +1 631 589 3800 • Fax: +1 631 589 3815
http://www.koehlerinstrument.com • e-mail: [email protected]
Petroleum Testing & Analysis Instrumentation • Custom Design & Manufacturing
5 Maintenance
WARNING.
Disconnect power to any unit before servicing to avoid exposure to high
voltages and/or temperatures which may result in personal injury or death. If you have any
questions about maintaining your equipment, then please do not hesitate to contact the
Koehler technical service department.
5.1 Troubleshooting
1.
ERR 1
– No Heat.
When the furnace starts heating with the user specified rate, then if
for any reason the furnace temperature stops rising, switch off the instrument and
check the heater fuse.
2.
ERR 2
– Shutdown.
When the furnace starts heating with the user specified rate, then
if for any reason the furnace gets overheated, switch off the instrument immediately
and
call the Service Engineer.
3.
ERR 3!
While entering alphanumeric characters if entry exceeds specified limits. Limit
for Sample Name: 20 characters, Sample No.: 10 characters, Id No.: 10 characters.
4.
RTD UNDER RANGE.
Temperature Sensor Circuit faulty.
Call the Service Engineer.
5.
RTD OVER RANGE.
Temperature Sensor Circuit faulty.
Call the Service Engineer.
6. Run Aborted.
The sample does not melt and furnace temperature rises until furnace
reaches Temperature Cutoff Limit.
7. Place Sufficient Sample at Scr.
In AUTO operation, if sample has not been centered
properly to monitor’s screen, the sample preparation is not proper, or the sample is not
sufficiently bright.
Verify these conditions and even then this message is being
displayed, call the Service Engineer.
8. ERR 4. Call the Service Engineer.
