HBOC/C and HBOR/C quick guide 001 EN
December 2021
LED indication:
1)
3 x green LEDs indicate oil level
2)
Green Power LED constant light indicate sensor is standby
–
not controlling
Green Power LED flashes when the sensor is in control operation.
3)
Yellow LED indicates supply is open to magnetic valve
4)
Red LED indicates ALARM
LED
signal
ON/OFF/Frequency
Functionality
Green
(3x)
ON
Oil detected
Flash
Turbulence in the compressor housing
OFF
Oil is not detected
Green
POWER
ON
Standby power connected
Flash
In operation or when the sensor is
connected to HB Tool. (Red and yellow LED
also flashes)
OFF
No supply
Yellow
ON
Activation/supply to the magnetic valve
OFF
Magnetic valve is not being supplied
Red
ON
Alarm. Activated automatically according to
a calculated time span if oil has not been
detected (oil cycle x alarm counter = Time
before alarm goes off). Output relay (pin 3 &
4) is activated.
OFF
Oil level reached in accordance with the
calculated time span / number of oil cycles.
Flash
Sensor is faulty
Calibration:
HBOR
is pre-calibrated upon delivery and ready for use in ammonia systems only. If the sensor is used in
other systems/applications, please contact HB products
HBOC
is pre-calibrated upon delivery and ready for use in refrigeration systems using conventional mineral
and PAO oils. If the
HBOC
is used in other oil types a calibration might be needed. This calibration is done
by using the HB tool connected via an USB cable.
Calibration instructions:
Both a calibration in gas an oil must be done:
A zero calibration is performed when the switch is in gas. The calibration is done by clicking on the zero-
calibration button in the tool.
A span/max calibration is done when the switch is covered with oil. The calibration is done by clicking on
the span-calibration button in the tool.
Fault Detection
Fault
Reason
Correction of fault
No LED is on.
No supply to the sensor or
defective cable/plug
Check and find
faults in the power
supply. Change the
supply cable.
Sensor does not
trigger even
though there is oil.
Quality/type of oil is different from
that used during factory
calibration.
Recalibrate the
sensor.
Red alarm
Oil level has not been attained
during the specified number of oil
cycles.
Check system oil
return. Check oil
filter and magnetic
valve if necessary.
3 x green flash
There is oil turbulence in the
compressor housing.
Change "filter
func/time cons" to
a higher value.
No output (3 x
green LED are on,
but the output
signal is not active)
Check the setup of the
parameters/which contact
function has been selected, NC or
NO (Normally closed/Normally
open)
Change the setup
using the tool.
Delay in sensor
activation
May be caused by gas and foam
bubbles in the system.
Check if the sensor
is placed optimally.
No detection
Fault in the electronics
Send the sensor to
be repaired.
Red LED flash
Sensor is faulty
Contact supplier
More information
For further information please download the full instruction manual from our homepage:
. You find it under downloads and then instruction manuals
