Carrier 19FA Bedienungsanleitung PDF herunterladen (Seite 9)

HVAC Training

Page: 9 of 13

Title: Chiller High Voltage Motor Terminations Lesson Plan #: NMH30L050303

c) Re-torquing is not required on the ceramic terminals. If leakage occurs after initial torque is

performed then the parts are defective and should be replaced.

Emphasize: The ceramic style insulator can not be re-torqued to stop a leak or re-

torqued to prevent leaks. If leakage occurs soft parts can be replaced and then re-

torqued.

d) Different Torque values apply depending on the style of the plastic terminal assembly:

Terminal board flange bolting:

old style 10 -12 ft. lbs

new style 12 - 15 ft. lbs

Packing nut:

old style 10 ft. lbs maximum

new style 12 - 15 ft. lbs.

Brass jam nut:

old and new styles 1ft. lb maximum

The flange bolting is usually only re-torqued if it is leaking or being replaced.

4) A noticeable difference between the two plastic style terminal plate connections is that the old

style has Loctite or epoxy on the insulator thread connection and the new style uses an O ring.

1.1.1.3 Demonstration

Prior to performing the demonstration have the trainees perform the hazard assessment and determine what PPE is

required for the task.

During the lab portion of this training the trainee is required to wear appropriate PPE; safety glasses and gloves

available when working on the chiller. When performing the Evaluation field conditions are simulated; safety glasses

and gloves available when working on the chiller and hard hats on.

Using the Lab Practical Evaluation, Carrier Instruction sheet and the work instructions, show the trainee how to inspect

and retorque the chiller motor terminal.

An optional exercise is to have one of trainee's perform the inspection and retorque as you explain the process. Based

on the experience of the trainee, have one trainee read the instruction and the other perform the task. Self check/Peer

check.

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Carrier 19FA Bedienungsanleitung Seite 9