Groen NGB, Руководство оператора

Страница: 10 / 25

Water Conditioning
It is absolutely essential that the water supplied to the Groen Steam-Generator be of such a character that it will not
form scale at an unacceptable rate. The Groen generator was engineered to minimize scale formation, but scale
formation depends on the hardness of the water and the hours of operation. In a few areas of the United States. the
water supply is sufficiently free of minerals to avoid scale formation. Most water supplies carry heavy loads or
minerals, which will form scale in the generator and reduce its steam output. Your local water utility can provide a
statement on the scale forming qualities of the water supply.
Water supplied to the steam generator should contain not more than 30 parts per million tote U. dissolved solids
(TDS) and should have a pH of 7.0 or higher. ,
Please follow these simple precautions:
(1) Do not rely on "water treaters" commonly sold as scale preventers and scale removers. THEY DO NOT
WORK. The only proven way to avoid scale build-up is to feed in water practically free of scale-forming
minerals.
(2) If your water supply carries scale forming minerals, as most water supplies do. run the feed water through a
properly maintained softener. Exchangeable softener cartridges or a regeneratable softener can be used. In
either case. establish a regular program of exchanging the cartridges or regenerating the softener. Installing a
water meter on the inlet line between the softener and the steam generator will give an accurate check of
water consumption and a way of determining when to change the cartridge or regenerate the softener. By
using a softener and operating within the softener's capacity to exchange minerals, the user will obtain a
longer generator life, high steam capacity, and minimum generator maintenance.
(3) If you notice a slowing of steam production, examine the interior of the generator for scale, and remove any
scale deposits. (See the general cleaning instructions.) Hard scale can be removed with acids like sulfamic or
inhibited muriatic, but such treatment is dangerous and should be done only by an expert familiar with the
hazards. Vinegar will dissolve most scales. but the process requires a long time and frequent changes of the
vinegar solution.
References
AMERICAN NATIONAL STANDARDS:
Z223.1-1984 National Fuel Gas Code
NATIONAL FIRE PROTECTION ASSOCIATION
60 Battery March Park
Quincy, Massachusetts 02269
NFPA.54 Installation of Gas Appliances & Gas Piping
NFPA.70 The National Electric Code
NFPA96 Ventilating Hoods
8