Kaishan KRSL Series - User Manual

Questions and Answers

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Amanda GonzalezAug 19, 2025
How to troubleshoot a Kaishan KRSL Air Compressor that fails to start?
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  William SosaAug 19, 2025
  If your Kaishan Air Compressor fails to start, check the power supply to the unit. Also, verify the incoming voltage and power source, and if low, contact your local power company. Replace the fuse if it's blown. Inspect the start switch for any malfunctions or loose connections. Ensure the emergency button is reset. Check the motor starter wiring; if the motor starter overload has tripped, remove the motor and have it tested at a motor manufacturer repair center. Check all wiring terminals for contact and tightness. If it is an air-end failure, contact a local authorized distributor.
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Christina KingAug 21, 2025
Why does my Kaishan Air Compressor shut down during loaded condition?
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  Rebecca LaneAug 21, 2025
  If your Kaishan Air Compressor shuts down during loaded condition, it might be due to several reasons. High ambient temperature could be the cause, so make fresh air intake openings or install ducts to discharge the hot air. Low incoming voltage can also cause this issue, so check the voltage and power source, or contact your local power company. Ensure that the operating pressure does not exceed the compressor’s maximum operating pressure. Check the fluid level and top-up if it is low. Also, the separator might require maintenance, so replace the separator element.
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isaacpayneAug 23, 2025
What to do if line pressure rises above unload pressure set-point in Kaishan Air Compressor?
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  Vincent PatelAug 23, 2025
  If the line pressure rises above the unload pressure set-point in your Kaishan Air Compressor, check for air leaks in the control system. Replace the air filter element if the air filter is blocked. Remove the intake hose and check the inlet valve for proper operation if the air intake valve is stuck open. Also, check the receiver tank to ensure that it is exhausting air to the atmosphere when the solenoid opens. If not, repair or replace the defective blow-down valve.
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Michael ThomasAug 26, 2025
Why is the air discharge temperature high on my Kaishan KRSL Air Compressor?
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  Amanda CordovaAug 26, 2025
  If your Kaishan Air Compressor has a high air discharge temperature, check the oil level. If the level is low, top it up. Verify that you are using the correct fluid brand; check the oil code number and replace it if necessary. Ensure the air exhaust is adequate and reduce the room temperature if the ambient temperature is high. Change the oil filter if it's plugged. If the internal aftercooler or after-cooler fins are plugged or dusty, use chemical cleaning. Adjust the fan motor setting if needed. Check and replace the temperature sensor if it has failed. Finally, check and tighten any loose wires.
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Tammy ThompsonAug 28, 2025
What causes a Kaishan KRSL to not reload when service line pressure drops?
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  shawpatriciaAug 28, 2025
  If the Kaishan Air Compressor does not reload when the service line pressure drops, the solenoid may be faulty, so repair or replace it as necessary. Inspect wiring terminals and tighten if the connection is loose. If the proportional valve is faulty, clean or replace it as necessary if the orifice is plugged. Check and repair the air inlet valve if the air inlet valve assembly is jammed.
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Brian HancockAug 30, 2025
What causes low air capacity delivery in a Kaishan KRSL?
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  Dennis PaulAug 30, 2025
  If the Kaishan Air Compressor delivers low air capacity, start by cleaning the air filter or replacing it with a new element if it's plugged. Remove the intake hose and check the inlet valve for proper operation if the air intake valve has failed. Replace the separator element if the separator has failed. Adjust or replace the indirect proportional valve, solenoid, or safety valve as necessary if they are faulty.
D
Diana PerezSep 1, 2025
How to fix excessive oil carry over in discharge compressed air from Kaishan Air Compressor?
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  rgrossSep 2, 2025
  To address excessive oil carryover in the discharge compressed air of your Kaishan Air Compressor, first check the oil level. If it's too high, adjust it. If the scavenging line is blocked, clean or replace it. Adjust the discharge pressure if it's too low. Clean or replace the air/oil separator element if it has failed. Check the minimum pressure valve for leaks and replace it if necessary.
B
bakersamanthaSep 4, 2025
What causes a loading function failure in a Kaishan KRSL?
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  Donna ThompsonSep 4, 2025
  If the Kaishan Air Compressor experiences a loading function failure, check and replace the solenoid valve, proportional valve, and minimum pressure valve as necessary if they have failed. Also, check and replace any pipes that are leaking. Remove the intake hose and check the inlet valve for proper operation if the air intake valve is stuck open.
S
Stephanie HallSep 6, 2025
What causes unloading failure at working pressure in Kaishan Air Compressor?
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  amandaleSep 6, 2025
  If the Kaishan Air Compressor experiences unloading failure at working pressure, causing safety issues, adjust the pressure loading setting as necessary. Check and replace the solenoid valve if it has failed. Check and replace the air/oil separator if it's plugged. If the air intake valve is stuck open, remove the intake hose and check the inlet valve for proper operation. Repair or replace the safety valve if it has failed.
S
Sarah Shaw MDSep 8, 2025
Why is the air discharge pressure below normal on my Kaishan Air Compressor?
- T
  Thomas GreenSep 8, 2025
  If the compressor air discharge pressure is below normal operating settings on your Kaishan Air Compressor, clean or replace the air filter if it's plugged. If the air intake valve is stuck closed, remove the intake hose and check the inlet valve for proper operation. Check or replace the air/oil separator if it's plugged. Adjust or replace the indirect proportional valve as necessary. Check and replace the solenoid valve and safety valve if they have failed.

Summary

Safety Information

1.1 SAFETY ALERT SYMBOLS

Identifies immediate hazards and unsafe practices with corresponding symbols.

1.2 SAFETY PRECAUTIONS

General safety precautions and warnings for operating and maintaining the compressor.

1.3 PRESSURE

Guidelines and warnings regarding pressure relief valves and system pressure.

1.4 FIRE AND EXPLOSION

Precautions to prevent fire and explosion hazards associated with the compressor.

1.5 MOVING PARTS

Safety warnings about keeping clear of moving parts like coupling and fans.

1.6 HOT SURFACES

Precautions to avoid contact with hot surfaces during compressor operation.

1.7 PROPER COMPRESSED AIR APPLICATIONS

Defines appropriate and inappropriate applications for the compressed air.

1.8 ELECTRICAL SHOCK

Safety measures to prevent electrical shock hazards during operation and maintenance.

General Information

2.1 INTRODUCTION

Overview of the KRSL series compressors, their power range, and basic configuration.

2.2 THE COMPRESSION CYCLE

Detailed explanation of the rotary screw compression cycle and fluid functions.

2.3 MOTOR

Information on the variable speed induction motor and its operating conditions.

2.4 COMPRESSOR LUBRICATION AND COOLING SYSTEM

Description of the lubrication and cooling system components and operation.

2.5 COMPRESSOR DISCHARGE SYSTEM

Explanation of the air/fluid mixture discharge and reservoir functions.

2.6 AIREND, INLETVALVE AND FILTRATION SYSTEM

Details on the airend, inlet valve, and filtration system of the compressor.

Fluid Information

3.1 FLUID GUIDE

Information on the recommended Kaishan fluid and fluid level inspection.

3.2 FLUID CHANGE RECOMMENDATIONS

Recommendations for fluid changes based on hours or sampling.

Installation

4.1 COMPRESSOR MOUNTING, SUPPORT AND LOCATION

Guidelines for proper compressor mounting, support, and location selection.

4.2 VENTILATION AND COOLING

Requirements for ventilation and cooling to ensure optimal compressor operation.

4.3 PIPING CONNECTION

Instructions for correctly connecting air and fluid piping systems.

4.4 FLUID LEVEL INSPECTION

Procedure for inspecting the fluid level in the compressor reservoir.

4.5 ELECTRICAL

Electrical supply requirements, wiring, grounding, and connection checks.

4.6 MOTOR ROTATION INSPECTION

Procedure for checking and ensuring correct motor rotation direction.

4.7 FAN ROTATION INSPECTION

Procedure for inspecting and ensuring correct fan motor rotation direction.

Compressor Controller Operation

5.1 BASIC OPERATION

Explains basic operation, screen displays, and controller functions.

5.1.1. Screen display and basic operation

Details on power-up, normal, and icon touch screen displays and their functions.

5.1.2 Push button functionality

Description of push button functions for starting, stopping, loading, and navigation.

5.1.3 Icons display and functions

Explanation of icons displayed on the normal run screen and their meanings.

5.2 PROGRAM STRUCTURE

Overview of the controller's program structure, data zones, and password protection.

5.2.1 Run menu

Details on accessing and interpreting data within the controller's run menu.

5.2.2 User menu

Guide to accessing and modifying user-specific settings and parameters.

5.2.3 Sequencing parameters

Configuration of sequencing parameters for controlling multiple compressors.

5.2.4 Maintenance parameters

Setup and monitoring of maintenance-related parameters and alarms.

5.2.5 Touch screen calibration

Procedure for calibrating the touch screen for accurate input.

5.2.6 Scheduled pressure

Configuration of pressure setpoints for scheduled compressor operation.

5.2.7 Schedule ON-OFF

Programming scheduled on/off periods for the compressor.

5.2.8 History record

Accessing and resetting the fault history log.

5.2.9 Date and Time

Setting the real-time date and time for the controller.

5.3. TECHNICAL DATA

5.4. THROUBLESHOOTING

Servicing

6.1 FLUID CHANGE

Procedure for draining and replacing the compressor fluid and filter.

6.2 AIR FILTER

Maintenance schedule and procedure for cleaning or replacing the air filter.

6.3 FLUID FILTER

Conditions and procedure for replacing the fluid filter cartridge.

6.4 AIR;OIL SEPARATOR

Procedure for replacing the air/oil separator element.

6.5 FLUID SAMPLING PROCEDURE

Step-by-step guide for performing oil sampling for maintenance analysis.

6.6 MAINTENANCE SCHEDULE

Guideline for periodic maintenance tasks based on operating hours.

Troubleshooting Guide

Standard Terms and Conditions

Contact Information

Kaishan KRSL Series Specifications

General

Working Pressure	7 - 13 bar
Pressure	7 - 13 bar
Series	KRSL
Type	Screw Air Compressor
Drive Type	Direct Drive
Cooling Method	Air-cooled / Water-cooled

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