Page 60
Chapter 3, SteamCraft 10 Service Manual
Models 24-CGA-10, 24-CGP-10, 24-CEA-10, 24-CEP-10
1. Carefully open the cooking compartment. Doors and remove the pans from
the slide racks.
2. If the SteamCraft 10 will be used again in a few minutes, shut the door to
maintain the cooking compartment temperature.
3. If another use is not planned for more than half an hour, leave the cooking
compartment door slightly open to reduce internal pressure while the steam
condenses and the compartment cools.
4. If the SteamCraft 10
is not being used again during this shift, perform the
Power Off and Shut Down and Cleaning Procedures.
Power OFF
(Automatic Blowdown)
Blowdown occurs automatically when the unit is turned off at the ON/OFF
switch. During blowdown, the steam generator and float control are rinsed
with fresh water, flushing deposits from the heating elements and generator
bottom. Blowdown at frequent intervals helps decrease mineral buildup in the
steam generator, and reduces the frequency of descaling and other
maintenance.
Blowdown Procedure
When the SteamCraft 10 is turned off, the blowdown cycle starts and runs
automatically. The complete cycle takes approximately 3 minutes.
1. Press the OFF (bottom) end of the ON/OFF switch to turn off the
SteamCraft 10. The red indicator on the ON/OFF switch turns off. Do not
turn power off at the main disconnect switch during blowdown.
2. Automatically, the drain valve begins to draw water from the steam
generator.
3. The fill and drain valves operate simultaneously for 3 minutes.
4. At the end of the 3-minute blowdown cycle, the fill valve closes.
5. When blowdown is complete, the SteamCraft 10 can be restarted, or the
shut down procedure completed.
• To restart the unit, Power ON (Automatic Fill) on
page 56
.
• To shut down the unit, refer to Shut Down and Cleaning, below.
Blowdown Frequency
The supply water quality determines how often blowdown must be per-
formed. The higher the feed water TDS and particulates, the more frequently
blowdown must
be performed. Refer to
Table 2-2
. Minimum Water Quality
Requirements on page 11. If the local water supply meets the minimum
supply water quality standards, observe the following guidelines to establish
proper blowdown scheduling, and maintain warranty coverage.
• For units without a SteamerGard water treatment system, blowdown
must be performed after every 4 hours of operation and at the end of
each shift as specified in the Shut Down and Cleaning procedure.
• For units with a SteamerGard water treatment system, blowdown must
be performed after each shift as specified in the Shut Down and
Cleaning procedure.