ecocool 150R
Operating Manual
Page 46
www.grantinstruments.com
11.0 Troubleshooting
Symptom
Possible cause
Action required
Display shows
“Check
refrigerated unit
”
Refrigerated bath not
connected
Refrigerated bath has
overheated
Check the communications lead is connected to
both the heating circulator and the refrigerated
bath.
Wait for compressor to cool, when thermostat
will reset and compressor will switch on again.
Remove any vent obstructions and carry out
routine cleaning (see section 9.2)
If the problem persists, contact Grant
Instruments.
Cooling
performance
reduced
Condenser fins
clogged with dust
Carry out routine cleaning (see section 9.2)
Temp continues
to rise when not
expected
Set temp is higher
than liquid temp
Check that the bath set temperature is correct
(see section 5.2.1).
Set temperature
too restricted
Liquid type set does
not allow required set
point
Change to different liquid type (see section
5.3.1).
Temperature
does not rise
when expected
Set temp is lower
than liquid temp
Check that the bath set temperature is correct
(see section 5.2.1).
Display shows
“High
Temperature
Alarm”
High temperature
warning alarm has
tripped
Check that the bath set temperature is correct
(see section 5.2.1).
Check that high temperature alarm is correct
(section 5.3.6).
Check that the liquid level in the bath is
adequate (see section 5.1.1 for minimum fill
levels).
Display shows
“Low
Temperature
Alarm”
Low temperature
warning alarm has
tripped
Check that the bath set temperature is correct
(see section 5.2.1).
Check that low temperature alarm is correct
(section 5.3.6).
Check that the liquid level in the bath is
adequate
Unit showing
erratic
temperatures
Calibration values not
set correctly
Restore the factory calibration settings (see
section 5.4.1) then re-calibrate if required (see
section 5.4).
