Johnson Controls Frick RXF 39

Questions and Answers

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Joy MunozAug 15, 2025
What to do if my Johnson Controls Frick RXF 39 pump does not pump?
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  Ryan BriggsAug 15, 2025
  If your Johnson Controls Air Compressor pump isn't pumping, several issues could be the cause. It might have lost its prime due to an air leak or low level in the tank, so fix any air leaks and ensure the liquid level is adequate. Check that the pump is rotating in the correct direction and that the motor is operating at the correct speed. Also, make sure both the suction and discharge valves are open and that the strainer isn't clogged. If the relief valve is set too low or stuck open, adjust it. A worn-out pump will also fail to pump, so consider replacing it. Review any recent changes to the liquid system or operations that might explain the issue, and adjust the end clearance and head position if they are incorrect.
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James GainesAug 18, 2025
Why is my Johnson Controls Air Compressor pump not up to capacity?
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  Yvonne CookAug 18, 2025
  If your Johnson Controls Air Compressor pump isn't reaching its full capacity, it could be due to several reasons. The pump might be starving or cavitating, so adjust the suction pipe size or reduce its length. A partially clogged strainer can also restrict flow, so clean it. Check for and fix any air leaks in the suction piping or along the pump shaft. Ensure the motor is running at the correct speed and is wired correctly. If the relief valve is set too low or stuck open, adjust or replace it. A worn-out pump will also reduce capacity, so replace it if necessary. Finally, make sure the end clearance and head position are correct.
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newtonangelaAug 21, 2025
Why is my Johnson Controls Frick RXF 39 pump so noisy?
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  Amy PerryAug 21, 2025
  A noisy Johnson Controls Air Compressor pump can stem from several causes. The pump might be starved, meaning heavy liquid can't reach it quickly enough, so increase the suction pipe size or reduce its length. Alternatively, the pump could be cavitating due to liquid vaporizing in the suction line; in this case, increase the suction pipe size or raise the liquid level if the pump is above it. Ensure proper alignment and check for a bent shaft or rotor tooth, straightening or replacing if necessary. Also, inspect for and clear any foreign objects that might be entering the pump through the suction port.
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Anthony CruzAug 25, 2025
What to do if Johnson Controls Frick RXF 39 Air Compressor pump starts, then loses its prime?
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  Emily ElliottAug 25, 2025
  If your Johnson Controls Air Compressor pump starts but then loses its prime, consider these potential causes. A low level in the tank could be the issue, so maintain a higher level. Liquid vaporizing in the suction line can also cause this problem, so prevent liquid vaporization. Check for air leaks or air pockets in the suction line, including leaks through packing or the mechanical seal, and inspect and repair any leaks. Finally, worn components can lead to loss of prime, so replace them as needed.
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Joanna ParkerAug 27, 2025
Why does my Johnson Controls Frick RXF 39 pump take too much power?
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  Kenneth HernandezAug 27, 2025
  If your Johnson Controls Air Compressor pump is consuming excessive power, several factors could be responsible. Check that the motor speed, reducer ratio, and sheave size are correct for your setup. If the liquid is more viscous than the unit is designed to handle, consider heating the liquid, increasing the pipe size, slowing the pump down, or using a larger motor. Confirm the discharge pressure and modify the system accordingly if it's higher than calculated. Ensure the pump is properly realigned. Also, verify that the clearance on the pumping elements is sufficient for the operating conditions, checking for drag or contact and increasing clearance where necessary.
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jasonbarnettAug 30, 2025
What causes a high pressure reading on the discharge port of a Johnson Controls Frick RXF 39?
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  Tom ShafferAug 30, 2025
  A high-pressure reading on the discharge port of your Johnson Controls Air Compressor could be due to several reasons. High viscosity combined with a small or long discharge line can cause this, so reduce viscosity or optimize the discharge line size. Make sure the gate valve is fully open. A plugged filter can also increase pressure, so clean or replace it. If the vertical head didn't account for a high specific gravity liquid, adjust the system design accordingly. Inspect and clean the inside of the pipe if it's partially plugged from buildup. Ensure the liquid in the pipe is at the correct temperature, and if it has solidified due to a chemical reaction, replace it. Lastly, check that the relief valve isn't set too high and adjust it if necessary.
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Jonathan CastilloSep 2, 2025
What causes a low vacuum gauge reading on the suction port of a Johnson Controls Air Compressor?
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  barkerdavidSep 2, 2025
  A low vacuum gauge reading on the suction port of your Johnson Controls Air Compressor can be caused by a few things. There might be an air leak in the suction line, so inspect for and fix any leaks. Ensure the end of the pipe is submerged in liquid. If the pump is worn, replace the worn components. Also, the pump might be dry and need priming, so prime the pump.
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sheaianSep 5, 2025
Why is there a high reading on the vacuum gauge of my Johnson Controls Air Compressor suction port?
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  marywilliamsSep 5, 2025
  A high reading on the vacuum gauge of your Johnson Controls Air Compressor suction port can indicate several issues. The suction line might be blocked due to a stuck foot valve, closed gate valve, or plugged strainer, so check the suction line for blockages. If the liquid is too viscous to flow through the piping, reduce its viscosity. The lift might be too high, so adjust the lift height. Additionally, the line might be too small, so increase its size.
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Miss Brenda JohnsonSep 8, 2025
What causes a low pressure reading on the discharge port of a Johnson Controls Frick RXF 39 Air Compressor?
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  Kristina DuranSep 8, 2025
  A low pressure reading on the discharge port of your Johnson Controls Air Compressor can be attributed to several factors. The relief valve might be set too low, so adjust the relief valve setting. If the relief valve poppet isn't seating properly, repair or replace it. Too much extra clearance can also cause low pressure, so reduce the extra clearance. Lastly, if the pump is worn, replace the worn components.
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Nicole HowellSep 12, 2025
What to do if vacuum gauge reading is erratic on Johnson Controls Frick RXF 39 Air Compressor?
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  Aaron RamirezSep 12, 2025
  If you observe a fluttering, jumping, or erratic reading on the vacuum gauge of your Johnson Controls Air Compressor, it could be due to liquid vaporizing. Identify and alleviate the conditions causing liquid vaporization. It may also be caused by liquid coming to the pump in slugs, possibly due to an air leak or insufficient liquid above the end of the suction pipe, so address air leaks and maintain an adequate liquid level. Vibrations from cavitation, misalignment, or damaged parts can also cause erratic readings, so check for cavitation and align or repair any damaged parts.

Summary

Installation

Foundation

Requirements and guidelines for compressor package foundations, including anchoring and grouting.

Handling and Moving

Instructions for safely rigging and moving the RXF compressor units.

Electrical Installation

Voltage Protection

Recommendations regarding voltage protection and the use of UPS systems.

Motor Starter Package

Information on motor starter packages and wiring requirements.

Operation

Operation and Start-Up Instructions

Step-by-step instructions for starting up and operating the RXF Rotary Screw Compressor Unit.

RXF Compressor

Features and design principles of the RXF rotary screw compressor.

Compressor Lubrication System

Functions of the lubrication system in the RXF compressor.

Cold-Start System

Description of the cold-start discharge check valve for lubrication at low temperatures.

Demand Pump Oil System

Compressor Oil Separation System

Capacity Control

Compressor Unloading

Adjustment (Capacity Control)

Volumizer II VI Control

Automatic adjustment of compressor volume ratio to optimize efficiency.

Compressor Oil Cooling Systems

QuantumLX EZ-Cool Liquid Injection Adjustment Procedure

Steps to set up and tune the EZ-Cool™ LIOC with Quantum™ LX Control Panel.

Operation of Danfoss Liquid Injection Valve

Using the Danfoss ICAD interface to monitor and change parameters.

Danfoss Valve Control Interface

Details on using push buttons and display to manage valve parameters.

ICAD Alarms

Start-up Procedures

Initial Start-up Procedure

Points to keep in mind during the initial start-up of the compressor unit.

Normal Start-up Procedure

Step-by-step guide for starting the compressor under normal conditions.

Restarting After Power Interruption

Maintenance Procedures

Normal Maintenance Operations

Essential safety precautions to take before performing maintenance.

General Maintenance

Key areas for ensuring long and trouble-free service from the compressor unit.

Compressor Shutdown and Start-Up

General Instructions for Replacing Components

Standard procedures for replacing unit components exposed to refrigerant.

Oil Filter, Spin-On (RXF 12-50)

Coalescer Oil Return Strainer

Liquid Injection Strainer

Changing Oil

Detailed procedure for changing the compressor oil and related components.

Suction Strainer Cleaning Procedure

Demand Pump Disassembly

Detailed instructions for disassembling the demand pump.

Troubleshooting the Demand Pump

Guidance on identifying and resolving issues with the demand pump.

Demand Pump Assembly

Step-by-step instructions for reassembling the demand pump with mechanical seals.

Troubleshooting

Discharge Port Pressure Issues

General Troubleshooting

Recommended Maintenance Program

Importance of a regular maintenance program for optimal unit performance.

Vibration Analysis

Oil Quality and Analysis

Importance of high-quality refrigeration oil and oil analysis for compressor longevity.

Troubleshooting the Compressor

Common compressor symptoms and their probable causes and corrections.

Troubleshooting the Oil Separator

Identifying and correcting issues related to oil level and oil return in the separator.

Troubleshooting the Liquid Injection Oil Cooling System

Diagnosing and resolving high or low oil temperatures and fluctuating oil temperatures.

Troubleshooting the Hydraulic System

Common issues with slide valve and slide stop function and movement.

Wiring Diagrams

Wiring Harness - External for Analog Devices

Wiring Harness - AC to Heaters and Valves

Wiring Harness - AC Conduit - Quantum to DBS Panel

Electrical Installation Best Practices

Proper Installation of Electronic Equipment

Guidelines for installing electronic equipment in industrial environments to prevent interference.

Voltage Source

Grounding

Critical factors for proper grounding of electronic control equipment.

VFD Applications

Wiring Practices

Wiring Practices - Panel Connections

Communications

UPS Power and Quantum LX Panels

Forms and Reports

Compressor Prestart Checklist

Checklist for installers to complete before Frick Field Service Supervisor arrival.

Start-up Report

Setpoint Configuration

Section for recording capacity control, compressor, and package safety setpoints.

Compressor Component Setpoints

Settings for compressor motor, Vyper coolant, PHD monitoring, and analog controls.

Vibration Data Sheet