Installation instructions

ManualsBrandsGE ManualsDo-It-Yourself toolsI-M1011

GEI-M1011A

Figure 3

Cooling Coil Connection Fittings

To make water connections, simply remove the pipe plugs

(furnished for shipping) from brass fittings B and make

connection to female pipe tapped hole in accordance with

applicable codes and good practice. TIGHTEN

CONNECTIONS SECURELY BUT NOT

EXCESSIVELY. It is recommended that the upper fitting

be used for inlet and lower fitting for drain.

DO NOT LOOSEN SCREWS F OR REMOVE PART B

WHEN CONNECTION WATER SUPPLY TO MOTOR:

PART B MUST BE FULLY SEATED AGAINST PART

A TO COMPRESS THE WATER/OIL SEALING O-

RING. Part A is screwed into the end shield wall and

locked with set screws E – when making water connections

check Part A to be sure it is tight and there are no oil leaks

around it. Since there is no solid connection between parts

A and C, inadvertent loosening of internal connections is

minimized.

IV. OPERATION

CAUTION: Before energizing the

motor for the first time or after an

extended shutdown, it is advisable

to check insulation resistance,

power supply and mechanical freedom of the

motor. If the motor has been stored in a damp

location, dry it out thoroughly before operating.

WARNING: Be sure that

the motor is not running

and the power supply is

disconnected before

working on motor.

A. Steps Prior to Initial Start-Up

After a Long Idle Period

1. Check insulation resistance as indicated in the

caution above.

WARNING: Before

measuring insulation

resistance, the machine

must be at stand-still and

all windings to be tested must be electrically

connected to the frame and to ground for a

time sufficient to remove all residual

In accordance with established standards, the

recommended minimum insulation resistance for the stator

winding is as follows:

= V

1000

Where R

is the recommended minimum insulation

resistance in me

obtained by applying direct potential to the entire winding

for one minute, and V

is rated machine voltage.

See IEEE Recommended Practice for

Testing Insulation Resistance of

Rotating Machines Publication No. 43

for more complete information.

If the insulation resistance is lower than this value, it may

be wet and it is advisable to eliminate the moisture in one

of the following ways

a. Dry the stator in an air circulating oven

with the air surrounding the part at 95ºC to 115ºC. until the

stator has been above 90ºC for at least four hours. Then the

air temperature may be raised to 135ºC to 115ºC. Continue

to heat until the insulation resistance is constant for a one

half hour period.

b. Enclose the motor with canvas or similar

covering, leaving a hole at the top for moisture to escape.

Insert heating units or lamps and leave them on until the

insulation resistance is constant for one-half our period. Be

careful not to get heating units so close to the winding that

they cause localized damage.

c. With the rotor locked and using

approximately 10% of rated voltage, pass a current through

the stator windings. Increase the current gradually until the

temperature reaches 90ºC. Do not exceed this temperature.

Maintain a temperature of 90ºC until the insulation

resistance becomes constant for a one-half hour period.

2. Check bearing oil reservoirs to be sure they

have been filled to the proper level with fresh oil. See

Relubrication section, Table 2 and Lube Nameplate on

motor for oil grade and viscosity and further instructions.

Be sure filler caps and drain plugs are securely tightened.