EN
page 33
WARNING: check very carefully if the “ground connection” of the machine, is
properly sized and fully effi cient, and that not too many units are connected on
it. An undersized or poor “ground connection” might lead to corrosion and/or
pitting effect on the stainless steel plates, even to perforation.
A suitable omni-polar one-way switch shall be installed and sized according to the
absorption provided, in order to completely guarantee the disconnection from the
supply mains, under “category III” overvoltage conditions.
This switch shall be included in the power network solely and exclusively used for
this purpose and installed in the immediate vicinity of the machine. Always turn the
machine off via this switch. This is the only model of switch that guarantees a total
electrical power disconnection.
7.2.3 Water supply connection - Characteristics
Fresh water supply features:
*Should the water supply pressure be more than 400 kPa, a pressure reducer must be
installed.
**It is compulsory to install a water-softener, in case of water with average hardness
above 8°f. Washed objects will be cleaner and the machine will last much longer.
N.B.: Any damage caused by limestone (calcareous water higher-up than 8°F and without
water-softener) will not be covered by warranty.
A periodical check of the supplied water hardness is highly recommended.
***Machines shall be made with extra power in case of cold water infeed.
The machine must be supplied with cold water (max 15°C), if equipped with the Heat
Recovery System.
A hot water supply on that connection will not allow any energy recovery or steam
reduction.
****The water supply temperature shall never exceed 55°C.
The drain tube shall always be connected to a siphon in order to prevent the release of odors.
Maximum drain height (machine with 700x700mm racks) is cm. 25 (without optional drain
pump).
Maximum drain height (machine with 850 x 725 mm racks) is cm. 25 (without optional drain
pump).
Maximum drain height (machine with 1350 x 725 mm racks) is cm. 15 (without optional
drain pump).
7.2.4 Steam evacuation
In accordance with regulations of environmental hygiene, for the proper functioning of the
machine and a healthy environment for the operator who working in there, it should be at
least 10 air volume changes per hour in the room where the machine is installed.
For small wash rooms we recommend at least 15 air volume changes per hour.
If the machine is equipped with the Heat Recovery System (optional), the air-volume changes
may be halved.
!
Water characteristics table Min Max
Static Pressure 200Kpa 400Kpa
Dynamic Pressure* 150Kpa 350Kpa
Water hardness** 2°f 8°f
Cold water-supply temperature*** 5°C 50°C
Hot water-supply temperature**** 50°C 60°C
Capacity 10lt/min
Table 1
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