Blodgett KLT-E Series User Manual download pdf (Page 15)

OM-KLT-E 13

Maintenance

NOTICE: Contact an authorized representative when repairs are required.

A Maintenance & Service Log is provided at the back of this manual. Each time

maintenance is performed on your kettle, enter the date on which the work was done,

what was done, and who did it. Keep this manual on ﬁle and available for operators to

use. Periodic inspection will minimize equipment down time and increase the efﬁciency of

operation. The following points should be checked:

1. Check the pressure/vacuum gauge everyday. The gauge should show a vacuum of

20 to 30 inches mercury (Hg), when the kettle is cold. If it does not, see “Jacket

Vacuum” on page 14.

2. Also check the jacket water level every day. It should be between the markers on

the gauge glass. If the level is low, see “Jacket Filling and Water Treatment” on

page 14.

3. Test the safety valve at least twice each month. Test the valve with the kettle

operating at 15 psi (105 kPa), by holding the test lever for at least 5 seconds. Then

release the lever and let the valve snap shut. If the lever does not activate, or there

is no evidence of discharge, or the valve leaks, stop using the kettle and contact a

qualiﬁed service representative.

4. Keep electrical wiring and connections in good condition.

5. Keep the inside of the control console clean and dry.

6. Jacket Vacuum/Removing Air from Jacket

When the kettle is cold, a positive pressure reading on the pressure/vacuum gauge

or a reading near zero indicates that there is air in the jacket. Air in the jacket acts

as an insulator, and slows kettle heating.

To remove air:

a. Start the unit. (Be sure there is water or product in the kettle when heating).

b. When the pressure/vacuum gauge reaches a positive pressure reading of 5

PSI, release the trapped air and steam by pulling up or out on the safety

valve lever or ring for about 1 second. Repeat this step, then let the pull ring

or valve lever snap back into the closed position.

7. Jacket Filling and Water Treatment

The jacket was charged at the factory with the proper amount of treated water. You

may need to restore this water, either because it was lost as venting steam or by

draining.

a. If you are replacing water lost as steam, use distilled water. If you are

replacing treated water that ran out of the jacket, prepare more treated

water as directed in “Water Treatment Procedure.”

b. Allow the kettle to cool. Turn the elbow on the safety valve counterclockwise

(to avoid thread damage) until the opening of the elbow faces upward.

c. Open the safety valve and pour the water or treated water in at the elbow

until the water level rises to a point between the marks on the gauge glass.

WARNING

WHEN TESTING, AVOID ANY EXPOSURE TO

THE STEAM BLOWING OUT OF THE SAFETY

VALVE. DIRECT CONTACT COULD RESULT IN

SEVERE BURNS.

WARNING

DISCONNECT ELECTRICAL POWER FROM

THE UNIT BEFORE ATTEMPTING TO

GREASE THE TRUNNION BEARINGS.

WARNING

TO AVOID INJURY, READ AND FOLLOW ALL

PRECAUTIONS STATED ON THE LABEL OF

THE WATER TREATMENT COMPOUND.

WARNING

ELECTRIC POWER ALWAYS SHOULD BE

SHUT OFF BEFORE WORK IS DONE ON

INTERNAL COMPONENTS.

CAUTION

BEFORE YOU HEAT THE KETTLE AGAIN

FOR ANY PURPOSE, TURN THE ELBOW

BACK CLOCKWISE UNTIL THE OPENING

FACES DOWNWARD.

Make sure that the

open end of the elbow

on the pressure

relief valve is directed

downward.

The pressure gauge

should show a

vacuum of 20 to 30

inches when the

kettle is cold.

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Blodgett KLT-E Series User Manual Page 15

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