Cleveland 24-CGM-200, Дополнительное руководство

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DESCALE PROCEDURE FOR
TWO & THREE PROBE GENERATOR BASE STEAMERS
STEP BY STEP PROCEDURE
IMPORTANT WARNING: BEFORE REMOVING THE HAND HOLE PLATE TO DESCALE
ANY STEAM GENERATOR, MAKE SURE THERE IS NO WATER OR PRESSURE BUILT UP
IN THE GENERATOR. CHECK THE OUTER SURFACE OF THE GENERATOR TO MAKE
SURE IT IS COLD. TURN THE YELLOW HANDLE ON THE MANUAL FILL VALVE 90
DEGREES TO THE BODY TO PREVENT ANY WATER FROM ENTERING THE UNIT. THIS
LIQUID DESCALER IS DESIGNED TO BE USED WITH NO HEAT APPLIED TO THE
GENERATOR.
STEP #1
Before opening the hand hole plate in the generator make sure the red power switch is in the off position.
Open the electric circuit box in front of the generator and look for two black square solid state timers
mounted on the side. If there are two solid state timers in the box, this unit has a TDS blowdown. The
timer mounted on top is a one-second timer. Remove the white wire from the terminal marked number 3
on the TDS timer to prevent the purge from coming on.
To open the hand hole plate, loosen and remove the nut and bar across the generator opening. Place the
end of a two x four on the hand hole plate. Rap the end of the wood with a hammer in various places until
the plate and gasket fall inside the generator.
Remove any scale build-up that can be taken out by hand or with a small vacuum cleaner. IF THE
GENERATOR HAS PREVIOUSLY BEEN REPLACED WITH A NICKEL PLATED ONE, DO
NOT SCRAPE OR SCRATCH THE SURFACE.
Assess the scale build-up above the water level on
the tubes and the top to determine the number of descalings that will be needed.
Use 2 gallons of liquid cleaner regardless of the size of the boiler. If there is a heavy build-up of scale
(1/4” or more) on the upper tubes (above the water level) and across the top of the generator, it will have
to be descaled twice.
After removing the scale and determining the number of descalings needed, replace the hand hole plate
with the old gasket still on the plate.
STEP #2
Remove the safety relief valve from the front of the generator. This will be the port of entry for the liquid