TraxOil Electronic Oil Level Controls

traxoil

 


TraxOil products are approved by the
major compressor manufacturers.

TraxOil TR3The new* TR3 TraxOil Level Control system accurately detects and controls oil levels in commercial HVAC oil-refrigeration compressors. TraxOil electronic oil level controls (OLCs) are compressor mounted. The TR3’s lightweight aluminum base and state-of-the-art design and engineering make it perfect for use with scroll and reciprocating refrigeration compressors.

 

*The TR3 Series replaces the TOUS Series. TOUS adaptor plates are not interchangeable.

NOTE: An A-7 or Y1236C valve is not required with a TraxOil Electronic OLC.

 

Key Features

  • Digital processor with SMT components
  • Alarm relay can switch 24 to 240 VAC
  • CE approved, EMC emissions and immunity
  • UL approved
  • Meets European RoHS and WEEE directives
  • All timing functions are in true time
  • IP65 rated for dust and water
  • Waterproof cables with no wiring at TraxOil unit
  • No orifice restrictor
  • Danfoss coil and enclosing tube complete with internal solenoid seat
  • Tamperproof. Cannot be adjusted in field
  • Set point levels use true levels with no timing overruns
  • Easily removable inlet fitting with built-in filter screen

High Pressure Oil System with TraxOil Controls

 

Low Pressure Oil System with TraxOil Controls

Resource Document

Temprite Customer or Technical Support: Contact Us.   

 

TraxOil Electronic Oil Level Controls

Operation

The TR3 electronic oil level control is mounted in place of the oil level sight glass at the compressor’s crankcase. A mechanical level detector (float and Hall sensor) monitors the oil level and transmits information to the control logic.

The integrated solenoid valve feeds oil directly into the compressor sump when the compressor oil level is low. If the correct oil level cannot be reached and goes into the red zone (see diagram below) the TR3 emits an alarm signal. The alarm contacts can be used to shut down or isolate the compressor.

The sight glass is divided into three main zones. When the level reaches the yellow zone (2) the TR3 starts filling after a time delay of 10 seconds. When the level drops to the red zone (3) the control will switch the alarm relay contacts on after a time delay of 20 seconds. The current oil status is indicated with the three (3) LEDs according to the following table:

LED Status / Function
Green Oil Level zone 1 (50 – 40%)
Yellow Oil Level zone 2 (40 – 30%) injection
Red Yellow Oil Level zone 3 (30 – 0%) alarm & injection

  Oil Level Zones

Technical Data

Max working pressure 43 bar Time delay filling (Yellow) 10 sec
Solenoid MOPD 21 bar Time delay alarm (Red) 20 sec
Current 0.7 A Medium temperature -20→80°C
Supply voltage (to be fused with 5Amp fuse) 24V AC only, 50/60Hz
+10/-15%
Medium Compatibility (not released for flammable refrigerants or ammonia) HFC, HCFC, CO2
Solenoid Coil 24VAC, 
50/60 Hz
Storage and transport temp -20→50°C
Alarm contact rating Max 3A
240 VAC
Ambient temp (Housing) -20→50°C
Alarm switch SPDT Protection class (DIN43650) IP65
Weight 800-950g Oil supply fitting ¼” Flare

 

TR3201

Safety Instructions

  • Read the installation instructions thoroughly, as failure to comply can result in the failure of the TraxOil unit, system damage or personal injury.
  • These instructions are intended for use by people having the appropriate knowledge, skills and training.
  • Before opening any system, make sure the pressure in the system is brought to, and remains at, atmospheric pressure.
  • The supply voltage and current of electric devices are to match the ratings on the TraxOil name plate and these instructions.
  • Remember to disconnect the supply voltage from the system before the TR3 installation or service.
  • Do not exceed test pressure.
  • Keep temperatures within nominal limits.

The TR3 adaptors cannot be interchanged with older “TO” model adaptors.

Resource Document:

Temprite Customer or Technical Support: Contact Us.

TraxOil Electronic Oil Level Controls

Operation

The TR3 electronic oil level control is mounted in place of the oil level sight glass at the compressor’s crankcase. A mechanical level detector (float and Hall sensor) monitors the oil level and transmits information to the control logic.

The integrated solenoid valve feeds oil directly into the compressor sump when the compressor oil level is low. If the correct oil level cannot be reached and goes into the red zone (see diagram below) the TR3 emits an alarm signal. The alarm contacts can be used to shut down or isolate the compressor.

The sight glass is divided into three main zones. When the level reaches the yellow zone (2) the TR3 starts filling after a time delay of 10 seconds. When the level drops to the red zone (3) the control will switch the alarm relay contacts on after a time delay of 20 seconds. The current oil status is indicated with the three (3) LEDs according to the following table:

LED Status / Function
Green Oil Level zone 1 (50 – 40%)
Yellow Oil Level zone 2 (40 – 30%) injection
Red Yellow Oil Level zone 3 (30 – 0%) alarm & injection

  Oil Level Zones

Technical Data

Max working pressure 43 bar Time delay filling (Yellow) 10 sec
Solenoid MOPD 21 bar Time delay alarm (Red) 20 sec
Current 0.7 A Medium temperature -20→80°C
Supply voltage (to be fused with 5Amp fuse) 24V AC only, 50/60Hz
+10/-15%
Medium Compatibility (not released for flammable refrigerants or ammonia) HFC, HCFC, CO2
Solenoid Coil 24VAC, 
50/60 Hz
Storage and transport temp -20→50°C
Alarm contact rating Max 3A
240 VAC
Ambient temp (Housing) -20→50°C
Alarm switch SPDT Protection class (DIN43650) IP65
Weight 800-950g Oil supply fitting ¼” Flare

 

TR3201

Safety Instructions

  • Read the installation instructions thoroughly, as failure to comply can result in the failure of the TraxOil unit, system damage or personal injury.
  • These instructions are intended for use by people having the appropriate knowledge, skills and training.
  • Before opening any system, make sure the pressure in the system is brought to, and remains at, atmospheric pressure.
  • The supply voltage and current of electric devices are to match the ratings on the TraxOil name plate and these instructions.
  • Remember to disconnect the supply voltage from the system before the TR3 installation or service.
  • Do not exceed test pressure.
  • Keep temperatures within nominal limits.

The TR3 adaptors cannot be interchanged with older “TO” model adaptors.

Resource Document:

Temprite Customer or Technical Support: Contact Us.

TraxOil Electronic Oil Level Control Installation Instructions

 

  • After de-pressurization of compressor and electrical isolation, the system is ready for TraxOil installation.
  • If space is limited, coil and cables (CAB301 & CAB302) should be mounted prior to installation on the compressor.  Mount coil, connect cable assemblies to the TraxOil and coil.
  • The TraxOil unit must be installed horizontally to function property, plus or minus 1o.
  • Use mounting torques specified by compressor manufacturer.

Flange Type Adaptors:  Models TR3201, 3205 & 3207

TraxOil unit is ready to install.  Please do not disassemble.

      • Remove sight glass from compressor.Mount O-ring to adaptor.
      • Mount TraxOil to the compressor’s sight glass connection.
      • Use the original sight glass screws; threads differ depending on compressor model.

Screw Type Adaptors:  Models TR3202, TR3203, TR3204, TR3210, TR3212 & TR3214

      • Remove coil from valve before tightening/loosening sight glass assembly bolts.
      • Remove bolts, adaptor and sight glass.
      • Ensure that O-rings stick to the adaptor.
      • Screw adaptor into compressor’s sight glass thread.
      • Mount TraxOil unit to adaptor.  Locate groove stamped in adaptor ring in line with main body marking.
      • Bolt complete assembly to adaptor with 20 Nm torque.

All Models

  • Install oil supply line to 3/4” flare.  The oil connector is removable and has a screen that can be removed for cleaning or replacment.
  • An inline filter upstream of the TraxOil is recommended.
  • Recommended torque for plug screws is 0.15 Nm (hand-tight).

NOTE for USA installations:  The TraxOil unit is to be mounted within a suitable end-product enclosure.

Leakage Test

After completion of the installation, a pressure test must be carried out.

Warning:  Failure to do so could result in loss of refrigerant and personal injury.  A pressure test must be conducted by skilled personnel, especially considering the dangers of high pressure.

Electrical Installation

Failure to comply with these instructions will void the warranty.

 Wiring Diagram

  • Connect CAB301 cable to relay connection, maximum 3A/240VAC according to Wiring Diagram.

Blue – Open in Alarm

Black – Common

Brown – Closed in Alarm

  • Do not switch compressor directly.  Use the compressor’s power relay instead.
  • Connect CAB302 cable to 24VAC, 50/60Hz, 0.7A, see Wiring Diagram. Ensure the cables are parallel to each other and that they protrude out the side of the unit and not over the LEDs.
  • Plugs at TraxOil unit do not require additional gaskets.

CAUTION:  For correct operation, maintain continuous power to the TraxOil unit at all times.

  • Do not switch the TraxOil “on and off” with the compressor; maintain continuous power to the TraxOil Unit.
  • Ensure that the secondary side of the 24 volt supply transformer to the TraxOil is fused with the correct size fuse.  Please consult your electrician or system designer as fuse sizes may vary at each installation.  (Max 5A). 
  • Allow 20VA per TraxOil unit with a maximum of three (3) units per transformer.  It is recommended that one side of the 24-volt circuit be grounded. 
  • All electrical wiring is to be carried out in accordance with AS3000 or equivalent standard in country of installation.

Resource Document:

Temprite Customer or Technical Support: Contact Us.