Jenny Reciprocating Air Compressors User Manual (English)

henry88Aug 16, 2025

What to do if my Jenny Reciprocating Air Compressors won't start?

B
brentleeAug 16, 2025
If your Jenny Air Compressor won't start, several factors could be at play. First, ensure the power cord is securely plugged into a grounded outlet. If the motor's thermal overload switch has tripped, turn off the compressor, allow the motor to cool, and then firmly press the reset button on the motor. Check the fuse or circuit breaker, replacing the fuse or resetting the breaker as necessary, ensuring you use a 'Fusetron' type T fuse. Also, make sure the tanks are fully bled of any air pressure. For engine-driven models, verify the engine oil level and add oil if it's low, and check that the manual lock on the pilot valve is in the in-line position. Finally, ensure the engine idle speed is adequate. If it is an engine problem, refer to the engine owner's manual.

Brand	Jenny
Model	Reciprocating Air Compressors
Category	Air Compressor
Language	English

Brand

Jenny

Model

Reciprocating Air Compressors

Section 1 Safety and Health Instructions

Safety and Health Instructions for Safe Use

General guidelines and warnings for safe operation of the air compressor, covering electrical, mechanical, and operational safety.

Section 2 Introduction and Description

General Description

Overview of the Jenny Air Compressor, its basic function, and manufacturer details.

Major Components

Lists and describes the key parts of the air compressor system, including pump, controls, and motor/engine.

Compressor Assembly and Pump Types

Details the reciprocating piston type and explains single vs. two-stage pump configurations.

Power Options

Information on electric motors and gasoline engines used to power the compressor.

Control Systems

Explanation of constant run, start-stop, and dual control operating modes.

Key Components

Descriptions of essential parts like pilot valves, pressure switches, regulators, and filters.

Section 3 Preparation for Use and Initial Installation Instructions

General Preparation

Initial steps before operating or installing the compressor, including recording model numbers and filling warranty card.

New Equipment Inspection

Procedures for checking the compressor upon arrival for shipping damage or missing parts.

Servicing New Equipment

Initial servicing steps like checking oil, relief valve, and air filter before initial use.

Installation Procedures

Guidelines for properly positioning, connecting hoses, and wiring the compressor unit.

Section 4 Operating Instructions

Operating Controls and Indicators

Description of the compressor's controls such as on/off switch, gauges, and pilot valves.

Preparation for Use

Pre-operation checks including lubricant levels and maintenance servicing.

Adjusting the Pressure Regulator

How to set and adjust the pressure regulator to the desired outlet pressure.

Draining Air Receiver Condensate

Procedure for removing moisture and sediment from the air receiver tank.

Dual Voltage Switch Operation

Instructions on how to change the operating voltage of the unit.

Grounding Procedures

Importance and method of grounding the unit for electrical safety.

Starting Procedure

Step-by-step guide for safely starting the air compressor unit.

Shutdown Procedure

Safe steps for turning off the compressor, including engine shutdown.

Section 5 Maintenance Instructions

Preventive Maintenance Checks

Routine checks to ensure the compressor is in good working order and prevent issues.

Changing Compressor Pump Oil

Procedure for draining and refilling the compressor pump with appropriate oil.

Checking Safety Relief Valve Operation

Verifying the proper function of the safety relief valve by testing its plunger.

Pilot Valve and Pressure Switch Adjustments

Adjusting pilot valve cut-out pressure and pressure switch settings for optimal operation.

Drive Belt Adjustment

Procedures for checking and adjusting drive belt tension for proper power transmission.

Checking for Air Leaks

Methods for detecting air leaks in the system using soapy water.

Preventive Maintenance Schedule

A schedule outlining daily, weekly, monthly, and annual maintenance tasks.

Section 6 Troubleshooting Instructions

Troubleshooting Guide

Common malfunctions, their causes, and corresponding corrective actions for the air compressor.

Compressor Fails to Start or Restart

Solutions for issues preventing the compressor from starting or restarting.

Compressor Stalls During Operation

Causes and fixes for the compressor stopping unexpectedly during use.

Slow Start-Up or Speed Issues

Diagnosing and resolving issues with slow compressor acceleration or speed.

Insufficient Air Output

Troubleshooting low air production from the compressor due to various factors.

Low Pressure at Tools/Accessories

Diagnosing and fixing low air pressure delivered to tools or accessories.

High Oil Consumption

Identifying causes and solutions for excessive oil usage or loss in the compressor.

Unit Overheating

Troubleshooting reasons for the compressor running too hot and potential damage.

Excessive Noise During Operation

Identifying and resolving sources of loud compressor noise during operation.

Moisture in Discharge Air

Addressing issues related to moisture in the compressed air output.

Oil in Discharge Air

Troubleshooting oil contamination in the compressed air stream.

Air Leaks

Finding and repairing air leaks at the pump, fittings, and tank connections.

Piston Ring and Cylinder Wear

Diagnosing issues related to wear in piston rings and cylinders for performance.

Jenny Reciprocating Air Compressors User Manual

Table of Contents

Questions and Answers:

Jenny Reciprocating Air Compressors Specifications

Summary