Using The External Probe - VWR avantor 442-1265 Instruction Manual

2.5 Using the External Probe

1. Connect the VWR External Temperature Probe to
the external RTD probe port (E) on the rear panel
of the unit.
Once the VWR External Temperature Probe is
connected, the external probe icon (P) will
illuminate.
2. The temperature display (L) will now show the
temperature of the external probe instead of the
heater.
The hot top caution indicator (Q) will still illuminate
once the heater temperature reaches 40°C.
Note: When using the VWR External Temperature
Probe, the temperature setpoint should be
adjusted to the desired sample temperature. If the
temperature setpoint is higher than the sample can
achieve, an E7 will occur (see Troubleshooting
section). Reduce sample volume or temperature
setpoint value. For Example: Water has a
theoretical temperature limit of 100°C (boiling). A
temperature setpoint greater than 100°C will cause
an E7 error.
3. If the VWR External Temperature Probe is inserted
into the external RTD probe port (E) while the
heater is running:
a) The heater will shut off.
b) The unit will display an E7 error.
c) The unit will beep 10 times.
d) All stirring functions will remain operational.
4. If the VWR External Temperature Probe is
removed from the external RTD probe port (E)
while the heater is running:
a) The heater will shut off.
b) The unit will display an E4 error.
c) The unit will beep 10 times.
d) All stirring functions will remain operational.
Note: To clear an E4 or E7 error code, flip the
standby switch (I) off and back on. The unit will be
ready for normal use.
21
vwr.com I Instruction Manual VWR
®
Advanced Hotplate-Stirrers
30°C
40°C