Unox MINDMaps BAKERTOP, Руководство по обслуживанию

Страница: 103 / 216

SpIdO.gas
TM
Theory and practice
INTrOdUCTION
MIND.Maps
TM
SPIDO.Gas
TM
gas ovens technology is based on the pre-mix blower system that takes
advantage of a blower connected directly to the gas valve.
The core of the SPIDO.Gas
TM
system is composed of:
■ Gas valve with blower;
■ Heat exchangers with integrated baffle;
■ Igniter;
■ Flame control board;
■ Gas board;
■ Burners.
The burner is where the reaction of the fuel takes place with the oxidizer (usually oxygen from air) to
convert the chemical energy of the fuel into thermal energy.
GaS CirCuit - MeCHaNiCal SySteM
SPIDO.Gas
TM
mechanical system is composed of:
•
Two heat exchangers with integrated baffles. The baffle flange is welded to the heat exchanger
flange;
•
Two flanges are placed at the ceiling of the cooking cabinet. The two heat exchanger flanges are
fixed to the cooking cabinet flanges;
•
Two Fiberglass sealing cords between the heat exchanger flange and the cooking cabinet ceiling
locking flange;
•
Two Burners. The burner is composed of a metallic fibre mesh torch, a flange, two ignition electrodes
and a flame detection electrode;
•
Two metallic rings and two fiberglass sealing cords placed at the base of the heat exchangers;
•
Two fiberglass gaskets placed between the flange of the burner and the base of the heat exchanger;
•
Copper washer gaskets for the fixing nuts of the burners.
The system is designed to be watertight guaranteed.
For that reason, the flange of the burner is fixed to the bottom side of the oven with four studs and brass
nuts. The burner flange is fixed to the bottom of the heat exchanger with three studs and brass nuts. At
the base of the heat exchanger there are two metal rings and two fiberglass cords. In the system the
metal rings and the fiber glass cords are placed alternately; in the previous system the metal rings are
placed in contact with the cooking cabinet.
For all the units produced with serial number 2015G00XXXXX – 2017K0092568, the burner was fixed to the
heat exchanger by means of three studs. Starting from the serial number 2017K0092569 the gas system is
composed of:
•
A burner fixed to the heat exchanger by using two studs and two locking bars used to prevent the
screws from gettin loose;
•
Two studs and brass nuts instead of three;
•
Extended length of the gas pad to make assembly and maintenance easier.
Introduction .......................................................................................................................................................................................................... 108
Gas circuit - mechanical system .......................................................................................................................................................... 108
Maintenance of the mechanical gas system .............................................................................................................................110
Gas circuit – electrical system ................................................................................................................................................................. 114
Appendix 1 - PRO100493/A MIND.Maps TM Gas units: Installation .........................................................................128
103