Market Forge Industries MPS-3E, Руководство пользователя

Страница: 8 / 38

5
2.0 INSTALLATION INSTRUCTIONS (Continued)
WATER QUALITY
The water supply connected to this steamer should contain no more than 2.0 grains of hardness
per gallon with pH from 6.5 to 8.0. This degree of hardness and pH can easily be obtained with
the use of a properly maintained water softener.
Water supplies vary from one location to another. A local water treatment specialist should be
consulted before installing any steam generating equipment.
Untreated water contains scale producing minerals which can precipitate onto the surfaces in
the boiler. Due to the temperatures in the boiler, the minerals can bake onto the surfaces and
components. This can result in early component failure and reduced product life.
Mineral scale on components causes several problems:
1. The surfaces of the heating devices become coated with scale, reducing the heat
transfer efficiency. This can produce hot spots on the heating elements and result in
premature failure.
2. The water level probes become coated with scale. Scale will bridge across the
probe insulator from the metal extension which senses the water level in the boiler.
Once this scale becomes wet, the water level control is unable to maintain the proper
water level in the boiler. This situation may cause an electric heating element to fail
if the element is not adequately covered by water.
Strainers and filters will NOT remove minerals from the water.
Refer to
REMOVAL OF LIME SCALE DEPOSITS , page 14.
VENT HOOD
Some local codes may require the steamer to be located under an exhaust hood. Information
on the construction and installation of ventilating hoods may be obtained from Vapor Removal
from Cooking Equipment, NFPA standard No. 96 (latest edition).
ELECTRICAL CONNECTIONS
WARNING: Disconnect electrical power supply and place a tag at
the disconnect switch to indicate that you are working on the circuit.
Electrical grounding must be provided in accordance with local codes or in the absence of local
codes, with the National Electrical Code, ANS/NFPA70, or the Canadian Electrical Code, CSA
C22-2, as applicable.
Use copper wire suitable for at least 200
o
F (90
o
C). The steamer must be grounded. The wiring
diagram is located on the right side panel as you face the steamer.