Blodgett SN-G Series - Manual (Page 8)

6 OM-SN-G
Water quality and Treatment
It is essential to supply the steam generator with water that will not form scale. Even
though the steam generator/boiler is engineered to minimize scale formation, scale
development depends on the hardness of your water and the number of hours you
operate the equipment each day.
Most water supplies contain minerals which form scale. It is this scale which could
lead to an early component failure.
Your local water utility can tell you about the minerals in your water. The water going
to the steam generator should have between 30 and 40 parts per million (ppm) total
dissolved solids (TDS) and should have a pH (acidity rating) of 7.0 to 9.0. Please follow
these simple precautions:
1. The best way to prevent scale is to use a water treatment system which has
been specifically designed for steamers and combination ovens.
2. A well-maintained water treatment system and a regular cartridge
replacement schedule is essential.
3. Using a water treatment system will provide longer steam generator/boiler life,
higher steam capacity, and reduce maintenance requirements.
4. If you notice a slowdown in steam production or an increase in deliming,
have the steamer checked for scale build-up. This could be an indication
that the water treatment cartridges need replacing. Heavy scale reduces the
unit’s ability to boil water, and can even cause component failure.
MINIMIZE SCALE PROBLEMS BY INSTALLING AND MAINTAINING WATER
TREATMENT SYSTEM AND BY DELIMING THE STEAMER REGULARLY.
The steamer features two separate water inlets — one for the steam generator/boiler
(treated water), the other for the spray condenser (untreated water). The second intake
will reduce treatment requirements resulting in significant savings.
The dual water connections are side by side on the rear of the unit. When seen from
the back of the unit, the treated water intake is on the left.
UNTREATED WATER
COUNTER-TOP STEAMER
STACKED STEAMER
The second water connection can
reduce treated water requirements.
TREATED WATER
STEAM VENT
DRAIN
WIRING
GAS IN
TREATED WATER
UNTREATED WATER
DRAIN