Blodgett KCH-DS Series - Manual (Page 13)

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8.0 CLEANING INSTRUCTIONS (Continued)
WHAT TO DO IF SURFACE RUST APPEARS
Metal utensils should never be used as they will scratch the surface of the equipment
and rust may begin to form. To remove surface accumulation of rust from the
inadvertent use of such utensils, the following procedure may be used.
WARNING: Improper use of this procedure may damage your appliance!
1. Use undiluted white vinegar with a non-abrasive scouring pad (plastic) or cloth on the
affected area to remove the rust stain. The appliance should not be heated and
remain at room temperature during the entire cleaning process.
2. If the stain resists removal, additional exposure time with vinegar may be required, to
a maximum of one hour.
3. Thoroughly wash all of the vinegar away with fresh clear water. Dry the surface
completely and allow one hour before using the appliance to cook.
9.0 TROUBLESHOOTING
EXTREMELY SLOW COOKING TIME
Abnormally slow cooking time may be due to insufficient steam pressure and/or volume.
Inlet pressures of less than 10 psi will result in slow cooking performance. Note that
pressures approaching the rated kettle pressure are liable to set off the safety relief
valve. If required pressure is not available to kettle, then volume of steam is not
sufficient. Minimum 3/4" pipe size is required to the kettle, but if the steam generating
source is at a great distance from the kettle, larger pipe will be required. Also check the
core of the steam supply pipe for debris or scalants that impede steam flow. May
require disassembly and inspection.
DRAW OFF VALVE LEAKS
If a leak occurs through the valve stem, replace the “O” ring. If the leak can be attributed
to faulty sealing occurring between the stem disc and valve seat, then quite often this
problem can be corrected by cleaning off the dried on food residue with an extremely
fine emery cloth. If not, the rubber vulcanized stem piece has been damaged and must
be replaced.
NOTICE: DRAW OFF VALVE HAS A VULCANIZED RUBBER COATED STEM FOR BETTER
SEALING. DO NOT OVER TIGHTEN. THIS MAY CAUSE THE RUBBER TO PULL AWAY FROM
STEM AND PERMANENTLY DAMAGE IT.