The Prover is powered by one main drive unit and the structure is insulated stainless steel with viewing windows to suit the Customers requirements.
The Prover concept is that of a `Walk Through` system with interlocked access doorways and the enclosure incorporates lighting to both sides.
The swing frames are located directly from the high tensile chain runs and are constructed in stainless steel. In the case of low level product loading the swing frames run outside of the vertical section and Sugden connect to a shaft encoder on the Customers Divider for synchronising the Prover and Griddle and to give the signal for the Product Loading Flap to operate.
The product cups are the `Sudan` snap in type.
The head section of the Prover is designed and manufactured to accept the mounting of the Prover Conditioning equipment.
b) Prover Conditioning System (Steam Heater Battery):
The Prover Conditioning system introduces a supply of air at a controlled temperature and relative humidity via valving in to the Prover Unit in order to maintain variable set point conditioning.
It is assumed that the relative humidity will not be raised beyond the point of condensation and that Prover drainage is not required.
Air, external to the Bakery, will be added to the Prover return air prior to entry in to a steam heated exchanger unit where sensible heat will be added. The incoming air will be passed through a filtration system.
The required humidification load will be met by the insertion of dry steam prior to entry in to the Prover.
The addition of sensible heat and humidity will be monitored by a sensor positioned in the Prover ductwork system each being controlled in a fully modulating manner.
For excessive temperature conditions in the Prover an emergency `dump` is incorporated. In the event of high temperature and for `shutdown` conditions when the Prover is fully loaded with product a motorised damper system will automatically open and vent the Prover air. The internal void of the Prover will therefore be rapidly cooled to near ambient conditions.
A Prover cup grit application system is incorporated as standard.
c) Prover to Griddle Transfer:
The Prover to Griddle transfer is by means of a high speed stainless steel wire web conveyor which would be continuous in its motion in order to achieve a good dough piece transfer. The continuous motion and high speed assists in removing the possibility of dough adhesion and produces a good strong transfer without `knocking back` the dough.
The descending grit which falls from the turned Prover swing frame passes through the transfer belt and is collected in plastic mobile collection vessels (As an option an automatic grit reclaim system can be incorporated at an additional charge).
When in the operating mode the conveyor is located to the main plant, however the unit is mobile for off plant cleaning purposes.
The Griddle is constructed in stainless steel and incorporates insulation and removeable side panels. The side panels are insulated so as to achieve minimal heat loss thus giving the product the maximum heat available.
All three decks are powered independantly with interfaced control and variable speed facilities.
Plates on all three decks are in carbon steel and are 3mm thick.
The Top Deck Plates are folded up at both edges.
The Bottom Deck Plates are folded in to a `Z` format.
The Cup Deck Plates are folded at both edges and have suitably sized holes on the Cup face to allow direct heat to the base of the Product Cup.
The product cups are 1mm carbon steel and of a `spun` format giving rigidity and strength at the top edge. The cups are welded in position and the assembly is Fluorocarbon coated (Top face in Fluoralon A6541 and the base face in Fluoralon B5221).
The rails on which the bearings of the Top, Middle and Bottom Deck Plates run are manufactured from grade 300 to 400 stainless steel with a chrome content of 23%, the wear characteristics of this material being unaffected with the fluctuation in temperature between ambient (machine switched off) and a nominal 250 degrees C. The construction of the rail items is a wear strip, in the aforementioned material, bolted to a carbon steel angle such that in the event of wear the wear strip can be removed and replaced.
The heat source is by laterally situated Gas Fired Ribbon Burners.
The operation of the Burners is linked to the Exhaust Fans in order to ensure the purging of the combustion gases and products of combustion.
The initial ignition of the Burners will only be permitted if all three griddle Decks are in motion so avoiding Cup Plate distortion.
The ignition sequence is fully automatic including the checking of appropriate pressure switch readings.
Should the Griddle stop for any reason then the Burners will be automatically turned off after an elapsed time of 15 seconds.
Temperature Control is achieved via a probe, located in the void of the Middle Deck (Cup Plate Deck) which senses when the Griddle reaches the High Temperature Set Point, at which time a number of selected Burners are automatically shut off, and when the Griddle Temperature reaches the Low Set Point then these Burners are automatically ignited.
The temperature difference between the High and Low Set Points is +/- 2 Degrees C and this is variable if required.
Included on the Griddle is a cup cleaning air blast to assist in removing unwanted grit from the empty product cup.
Also included as standard are an automatic Chain Lubrication system and Exhaust Canopy complete with fans and regulation pressure switches.
