To Next PageTo Next PageWhy is the room temperature too low with my KeepRite K40-CU-IM-13?
If the room temperature is too low when using your KeepRite Air Conditioner, it could be due to a defective room thermostat, an improper differential/setting, or a malfunctioning liquid line solenoid valve. Replace or adjust the room thermostat and inspect and repair or replace the solenoid valve.
What to do if KeepRite K40-CU-IM-13 compressor starts, but trips on overload protector?
If your KeepRite Air Conditioner compressor starts but then trips on the overload protector, several factors could be at play. Begin by confirming that the wiring is correct and secure, and that the line voltage is within the proper range. A defective start or run capacitor, or a faulty start relay could also be the cause, so replace these if needed. High suction or discharge pressure, tight bearings, or mechanical damage inside the compressor can also trigger this issue. Additionally, check for a defective overload protector, damaged motor windings, an overcharged system, or a refrigerant shortage. Ensure proper ventilation and that the system is operating within its design conditions. If suction or discharge pressure is too high, reduce it.
How to troubleshoot a KeepRite K40-CU-IM-13 Air Conditioner compressor that will not run?
If your KeepRite Air Conditioner compressor won't run and doesn't even try to start, there are several potential causes to investigate. Start by checking if the main power switch is open and inspect the fuse or circuit breaker. Also, check if thermal overloads have tripped and reset them if necessary. Other possible issues include a defective contactor or coil, a system shutdown by safety devices, an open thermostat or control (indicating no cooling is required), a liquid line solenoid that won't open, or loose wiring. Verify the thermostat settings, inspect the liquid line solenoid, and check and tighten any loose wiring.
Why is the discharge pressure too high in my KeepRite Air Conditioner?
If your KeepRite Air Conditioner's discharge pressure is too high, it could be due to several reasons. Start by purging any non-condensables from the system. If the system is overcharged with refrigerant, reduce the refrigerant charge. Ensure the discharge service valve is fully open. Check that the condenser fan is running and that the condenser coil is clean (for air-cooled condensers) or that the tubes are clean (for water-cooled condensers). Inspect and adjust or replace the water regulating valve or the flooded head pressure control if you have water-cooled condensers.
What causes short cycling in a KeepRite K40-CU-IM-13 Air Conditioner compressor?
Several factors can cause a KeepRite Air Conditioner compressor to short cycle. The low-pressure control differential might be set too low, so adjust it accordingly. A shortage of refrigerant can also cause this, so add refrigerant as needed. Insufficient airflow at the evaporator(s) can be another cause; increase the airflow. High discharge pressure, leaking internal discharge valves, or an incorrectly sized unit can also lead to short cycling. Reduce discharge pressure, inspect and repair any leaking internal discharge valves, and verify the unit sizing against your requirements.
Why does the start relay keep burning out in my KeepRite K40-CU-IM-13 Air Conditioner?
If the start relay in your KeepRite Air Conditioner burns out, it could be due to several reasons. First, ensure that the wiring is correct. Low or high line voltage can also cause this issue, so measure and adjust the line voltage accordingly. Short cycling, improper mounting of the relay, an incorrect start or run capacitor, or an incorrect relay can also lead to burnout. Address any short cycling issues, properly mount the relay, and replace any incorrect components with the correct ones.
Why is ice building up in the drain pan of my KeepRite Air Conditioner?
If you notice ice building up in the drain pan of your KeepRite Air Conditioner, it could be due to several reasons. There might be an improper slope in the pan, a blocked drain line, a defective electric heater in the drain pan, not enough defrost cycles per day, or a lack of or improper P-trap in the drain line. Adjust the slope of the drain pan, clear any blocked drain lines, inspect and repair the electric heater, increase the number of defrosts per day, and inspect and correct the P-trap in the drain line.
What causes low suction pressure in my KeepRite K40-CU-IM-13?
If the suction pressure is too low in your KeepRite Air Conditioner, several factors could be contributing. A shortage of refrigerant, a dirty or iced-up evaporator, a clogged liquid line filter drier, clogged suction line filters or compressor suction strainers, a malfunctioning expansion valve, a condensing temperature that's too low, an improper TX valve selection, or evaporator distributor feed problems can all cause this issue. Add refrigerant, clean or defrost the evaporator, clear any clogged components, inspect and replace the expansion valve, increase the condensing temperature, check the TX valve selection, and inspect and rectify any feed problems.
Why is the suction pressure too high in my KeepRite Air Conditioner?
If your KeepRite Air Conditioner's suction pressure is too high, it could be due to several factors. An excessive load, broken compressor internal valves, an incorrectly sized unit (undersized), or an improper TXV bulb charge can all contribute to this issue. Reduce the load, inspect and replace broken internal valves, verify the unit sizing against your requirements, and adjust the TXV bulb charge.
Why does my KeepRite Air Conditioner compressor run continuously?
If your KeepRite Air Conditioner compressor runs continuously, it could be due to several reasons. An excessive load, a thermostat set too low, or a defective thermostat can cause this. A shortage of refrigerant, leaking compressor internal valves, a malfunctioning liquid line solenoid, or an incorrectly sized unit can also lead to continuous operation. Reduce the load, adjust the thermostat setting or replace it if defective, add refrigerant, inspect and repair leaking internal valves, and verify the unit sizing against your requirements.
Key safety precautions for qualified mechanics and working conditions, emphasizing care around sharp edges.
Crucial warning about always disconnecting and locking off the main power supply before working on the system.
Procedure for inspecting equipment upon receipt for visible damage or loss and checking shipping lists.
Factors to consider when selecting a location, including load capacity, ventilation, and codes.
Guidelines for safely lifting and positioning the unit, using spreader bars, and placing on a level base.
Minimum clearances for air-cooled condensing units with horizontal airflow.
Minimum clearances for vertical airflow units, including wall, pit, and louver/fence installations.
Step-by-step instructions for removing shipping spacers from spring-mounted compressors.
Guidelines for adequate ventilation air in machine rooms to prevent excessive temperature rise.
Adherence to national/local electrical codes for wiring and connections.
Allowable voltage variations and phase imbalance requirements for unit operation.
Recommended initial settings for air and electric defrost time clocks.
Wiring diagrams for K-Line horizontal air flow condensing units (208-230/3/60 & 200-220/3/50).
Typical wiring configurations for air defrost and electric defrost evaporators.
Wiring diagrams for KE-Line single-phase horizontal air flow condensing units.
Wiring diagrams for KE-Line three-phase horizontal air flow condensing units.
Wiring diagrams for vertical air flow condensing units and their evaporators.
Warnings and important notes regarding the installation of refrigerant piping, emphasizing grade copper tubing.
Tables detailing pressure loss for liquid refrigerant in risers based on size and refrigerant.
Guidelines for suction line gas velocity and the use of suction traps for oil return.
Typical construction methods for double riser suction lines to aid oil return.
Explanation of series/parallel water circuits and water regulating valve function.
Information on estimating flow rates and pressure drops for water-cooled condensers.
Tables showing required water flow rates for different TD and temperatures.
Tables for typical pressure drops in condensers and compressor coils.
Installation and function of liquid sight glasses and filter driers for moisture and refrigerant detection.
Use of mufflers for noise reduction and oil separators for oil return to the compressor.
Importance of suction line filters, vibration eliminators, and accumulators for compressor protection.
Benefits of suction to liquid heat exchangers and phase/voltage monitors for system protection.
Steps for testing system piping for leaks using nitrogen and refrigerant.
Warning about HFC-134a combustibility with air at certain concentrations.
Method for evacuating the system using a high vacuum pump to remove moisture.
Detailed steps for achieving proper dehydration and vacuum levels.
Recommended insulation types and thicknesses for liquid and suction lines to reduce heat gain.
Methods for charging the system with refrigerant, including sight glass observation.
Setting adjustments for flooded condenser pressure-regulating valves.
Tables showing refrigerant operating charges for air-cooled units in warm and cold ambients.
Table detailing refrigerant charge per 10 feet of liquid line size.
Refrigerant operating charges for vertical airflow units in warm ambients.
Refrigerant operating charges for vertical airflow units in cold ambients.
Procedures and cautions for checking compressor oil levels before and after operation.
Compatible refrigeration oils for Copeland semi-hermetic reciprocating compressors.
Compatible refrigeration oils for Bitzer semi-hermetic reciprocating compressors.
Compatible refrigeration oils for Carlyle semi-hermetic reciprocating compressors.
Essential checks to perform before starting the refrigeration system, including connections and oil levels.
Procedures for monitoring system performance during initial operation, including pressures and oil levels.
Ensuring wiring diagrams, instructions, and warranty certificates are completed and filed.
Tables showing pressure control settings for various refrigerants and temperatures.
Maximum cut-out pressure settings for air-cooled and water-cooled units.
Recommended staged pull-down process for large freezers to avoid structural issues.
Adjusting defrost termination and fan delay for proper ice management.
Steps to measure and calculate compressor suction superheat.
Steps to measure and calculate evaporator superheat.
Checks for discharge/suction pressures, sight glass, and expansion valve operation.
Verifying voltage, amperage, pressure controls, and defrost settings.
Troubleshooting for compressor start, overload, and short cycling problems.
Diagnosing humming but not starting, or tripping on overload protector.
Causes for the compressor cycling on and off too frequently.
Diagnosing discharge/suction pressure, oil level, and oil loss problems.
Troubleshooting room temperature, ice accumulation, and fan operation.
Instructions for filling out and submitting the Warranty Activation Certificate.
Advising the owner on normal operation, electrical characteristics, and site cleanliness.
Recommendations for a semi-annual maintenance program by a qualified mechanic.
Guidance on obtaining genuine service parts through sales representatives or distributors.
Terms and conditions for product warranty coverage, including duration and transferability.
List of damages and conditions not covered by the warranty, such as abuse or unauthorized alterations.
Fields for installation location, contractor contact information, and system type.
Recording of unit model, serial numbers, electrical ratings, and expansion valve details.
Parameters to record during start-up, including pressures, temperatures, and defrost settings.
Addresses and phone numbers for obtaining service parts in Canada and USA.
General| Brand | KeepRite |
|---|---|
| Model | K40-CU-IM-13 |
| Category | Air Conditioner |
| Language | English |
