Toshiba Air Conditioner User Manual

TOSHIBA INTERNATIONAL CORPORATION

Industrial Division / Houston Motor Plant

Motor Operation Procedure

REFERENCE USE ONLY WHEN ISSUED BY MOTOR MKTG.

Motor Lubrication

Dist: Mktg.
QC

1. SCOPE

To give recommended guidelines for electric motor relubrication.

2. START UP
Toshiba motors are properly greased at the time of manufacture. It is recommended that

if a motor has been stored for a period of six months or more, it should be lubricated prior
to starting (See Fig. 1) using a standard hand held grease gun.

Fig. 1 FRAME SIZE QUANTITY of PUMPS

It should be noted that grease leakage around the shaft hole could indicated over-

packing. Excess grease should be purged out by operating the motor temporarily with
the relief open.

Lubrication of electric motors should be done as a part of a planned maintenance

program.

Before greasing, be sure fittings are clean and free from dirt. Always relubricate using

grease that is fresh and free from contamination.

Toshiba motors may be equipped with an automatic grease relief fitting, grease plug or

grease cover plate for the outlet.

It should be noted that it may be necessary to remove an automatic type fitting due to

hardening of grease. Motors utilizing a grease plate may require the scraping out of old
grease a minimum of once every two years.

3. STANDARD SERVICE

1. Select the proper service condition from Fig. 2.

2. Select the frequency and volume from Fig. 3.

3. Before greasing be sure fittings are clean and free from dirt.

143 ~ 256
284 ~ 405

444 and Larger

INDEX MDS-O-0001
SHEET NO. 1 of 3
ISSUED 01/24/96

SUPERSEDES NEW
REVISION 0

WRITTEN BY I. MARQUEZ
APPROVED BY

2 to 3 strokes
4 to 5 strokes

6 to 10 strokes

J. Bugbee

TOSHIBA INTERNATIONAL CORPORATION

INDEX MDS-O-0001

Industrial Division / Houston Motor Plant

SHEET NO. 2 of 3

Motor Operation Procedure

3. STANDARD SERVICE (-cont.)

5. Remove relief plug or plate and using a low pressure hand held grease gun, pump the required
amount of grease.

6. For Frames 143T to 365T allow motor to run for 20 to 30 minutes and for Frames 405T and
larger allow motor to run for 30 to 60 minutes before replacing hardware.

7. Grease may not relieve from drain. Use volumes recommended to avoid overgreasing.

Fig. 2 SERVICE CONDITIONS

Standard Duty Eight hours per day;

Light to normal loading;
Clean condition, free from dust.

Severe Duty 24 hours per day;

Light to normal shock loading, vibration;
Exposure to dirt or dusty conditions.

Very Severe Duty 24 hours per day;

High ambient;
Normal to high shock loading, vibration;
Dusty conditions;
Confined mounting conditions

4. RECOMMENDED GREASES:
Confirm if the motor nameplate has specified the grease used.
Standard, Severe Duty and 841 motors greased at the factory will use:

Grease Name: Chevron SRI
Manufactured By: Chevron U.S.A., Inc.
Operating Ambient Temp.: -30°C to 50°C

5. RECOMMENDED GREASES for STANDARD APPLICATIONS

Use the following greases listed for the given temperature range, unless otherwise shown by the motors

grease nameplate:

Chevron SRI
Exxon Unirex #2
Exxon Polyrex
Shell Dolium R
Polystar RB 2

Operating Ambient Temp. -30°C to 50°C

Chevron U.S.A., Inc.
Exxon Corp.
Exxon Corp.
Shell Oil Co.
Texaco

ISSUED 01/24/96
SUPERSEDES NEW

TOSHIBA INTERNATIONAL CORPORATION

INDEX MDS-O-0001