HB Products HBOC/C User manual

HBOC/C and HBOR/C quick guide 001 EN December 2021
Electrical connections
HBOC/C and HBOR/C can supply a magnetic valve, or it can be connected to the central control via the
sensor's control/alarm output. See the diagrams below for the two
HBOC/C and HBOR/C - mk1 (DC version –DC supply and DC output on cable)
DC version
HBOC/C and HBOR/C –mk2 (AC version –AC/DC supply and AC/DC output on cable)
AC version
The sensor controls the valve independent of other parts of the system. The function starts to work when
the supply is connected. The control function can be activated/deactivated via an external run signal with
"Run in" (pin 5) or work continuously
Quick guide for OIL MANAGEMENT SWITCHES
Covers HBOC and HBOR both mk1 and mk2 versions.
Setup information is available in the manual which is available under download on www.hbproduct.dk
Introduction
The sensors are designed for control of oil levels in
gas HBOC and in Liquid ammonia HBOR
HBOR will also be useable for measuring water in
oil.
Both sensors can control a level based on a single
switch. These sensors replace the common
mechanical float and the two-switch solution
where a minimum and maximum level switch is
used for controlling the level.
The difference between mk1 and mk2 is the
output on the cable.
•HBOC/C and HBOR/C has 24 VDC max 24 W output on the cable
•HBOC/C mk2 and HBOR/C mk2 has 24 V AC/DC max 24 W output on the cable
Mk2 version are labeled mk2. Mk1 versions are not labeled mk1
Installation
The sensor is mounted either on a compressor or an oil separator. On a compressor, an adapter flange can
be provided as an accessory. The sensor is sealed with Teflon tape or liquid gasket before installation.
Dependent upon the thread type, the gasket consists of:
•NPT thread = Teflon tape or liquid gasket
•BSPP & UNEF = Aluminum washer/gasket
Solenoid valve
24 VDC or 24VAC
Brown +
White –
Grey not used
1 Brown +24 VDC
2 White - common
3 Blue Alarm Output pot. free 1A
4 Black Alarm Output pot. free 1A
5 Grey DI Run-in signal 5-24 V DC
Solenoid valve
24 VDC 1A
Brown +
White –
Grey not used
1 Brown +24 VDC or 24 V AC
2 White - common or 24 V AC
3 Blue not used
4 Black Digital out 24VDC 30 mA
5 Grey DI Run-in signal 5-24 V
DC

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:
www.hbproducts.dk. You find it under downloads and then instruction manuals