HVAC-R Service Calls Volume 1- An Interactive Training Series on CD-ROM and Networks

HVAC-R Service Calls Volume 1
Interactive Training Series

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Audience:
Anyone interested in pursuing a career or furthering their career as an HVAC-R Technician.

Average
Training Time:

2 to 3 hours per volume NOTE

Format/
Product Code:
CD-ROM (MPEG Video)/ DLMRHVC

Produced by:
Delmar Thompson Learning

TOPICS
The volume presents interactive instruction covering the following topical areas:

Systematic HVAC-R Troubleshooting

Intro to Systematic HVAC-R Troubleshooting
HVAC Knowledge
Step One: Verify the Complaint
Step Two: Gather Information
Step Three: Visual Inspection
Step Four: Isolating the Problem
Step Five: Correct the Problem
Step Six: Test System
Step Seven: Complete Service Call

Basic HVAC-R Controls Service Calls

Intro to Basic HVAC-R Controls Service Calls
Troubleshooting Steps: Residental service call
Troubleshooting Steps: Retail store service call

Electronic Controls Service Calls

Intro to Troubleshooting Electronic Controls and PC Boards
Troubleshooting Steps: Retail store service call
Troubleshooting Steps: Residental service call
PTC, Troubleshooting Steps: Residential Service

Electric Motor Service Calls

Intro to Troubleshooting Failed Electric Motors
Electric Motors
Troubleshooting Overview
Troubleshooting Steps: Retail store service call
Troubleshooting Steps: Restaurant service call

PERFORMANCE OBJECTIVES
This course will measure mastery on each of the following performance objectives. Upon completion, workers will be able to...

Understand How HVAC Equipment Works

Explain how HVAC equipment can fail.

Troubleshoot Properly

Explain troubleshooting.
Describe good troubleshooting skills.
Recall that the technician should know normal operating conditions.
Recall the first thing a technician should do before performing service on HVAC equipment.
Recall what the technician should do when he arrives at the job site.
Recall what the technician should do if the customer is angry/upset.
Recall that once a repair is finished the technician should test the equipment.
Recall that before making any repairs, the technician should always the customers approval.
Explain how the technician helps protect the environment.

Troubleshoot Basic HVAC Controls

Explain why technicians talk with the customer prior to checking the equipment.
Explain why it is important to lock-out and tag the disconnect.
Explain how the removal of heat is controlled.
Explain how the air handler works.
Explain how the condensing unit compressor contactor coil receives voltage.
Recall that the technician should wait 5 minutes for the condensing unit to come on.
Identify when electrical female spade terminals should be replaced.
Explain when the service call is completed.

Troubleshoot Electronic Controls

List 3 reasons why electronic controls are used to replace electro- mechanical controls.
Explain what troubleshooting electronic controls is based on.
Explain why it is important to check the dry bulb and the wet bulb temperatures.
Explain why the techncian feels the discharge air.
Recall that when a PTC device gets hot the resistance of the PTC decreases to a high value.
Recall that it takes the PTC device 2-5 minutes.
Describe how to complete the service invoice.
Recall the best method for checking the performance of the PC board.
Explain the purpose of a PTC device in a motor control.

Troubleshoot Electric Motors

Identify the normal insulating temperature of the motor.
List causes of excessive heat in a motor.
List what the start up amperage of a motor is dependent on.
Explain ambient temperature.
Identify the stage of motor operation when there is no current flow through the motor windings.
Identify when the windings will over heat in a 3-phase motor.
Recall the major cause of motor failure.
Recall that motors draw the highest current during start up.
Explain that start up current can be as high as 6-8 times the motor running amperage.
Recall when installing a new motor the capacitor should be replaced.