Mash Bath
I N D U S T R I A L E Q U I P M E N T & C O N T R O L P T Y . L T D .
6 1 - 6 5 M c C l u r e S t . T h o r n b u r y . 3 0 7 1 M e l b o u r n e . A u s t r a l i a
T e l : 6 1 ( 0 ) 3 9 4 9 7 2 5 5 5 F a x : 6 1 ( 0 ) 3 9 4 9 7 2 1 6 6
E m a i l : i e c @ i e c p l . c o m . a u
M A S H B - 2 0 1 9 0 3 1 4 . d o c 1 4 - M a r - 1 9
1 2
ADD D / WATER:
This first alert (#1) sounds to advise the operator to fill each pot with the
correct volume of distilled water at the same temperature as the bath so that the test can
begin. The required initial volume of distilled water is displayed on the screen and, with a
momentary press of the gun switch, this programmed volume at the correct temperature is
added to each pot. When all are filled this way, the mashing can begin.
NOTE::
In bench models, this d/w volume is held in the small pots that are placed in the
same bath as the sample. This ensures the d/w temperature is always correct. In the
larger floor mounted machines, d/w is stored, separately controlled for temperature, stirred,
metered and is quickly dispensed into each pot by pressing a switch on the top of the
special d/w dispensing gun. The dispensed volume depends on the volumes set in each
program on step #1.
START THE TEST:
The program has HALTED awaiting the filling of all the pots. Press
the GO button to release the HALT and stirring begins and the program time progresses.
The temperature of the bath will follow the programmed course relative to time. The
stirring will operate as programmed step by step, but normally, stirring continues
throughout. When EDITING, the stir option can be changed on any step.
SOMETIMES ADD WATER:
At a certain point, some programs require an additional
amount of distilled water to be added to the mash. On the bench models, the additional d/w
volume is placed in the smaller pots and they are inserted into the bath lid. The next alert
(#2) sounds at the correct point in the program but the program does not HALT. The
operator, one by one, lifts the small pots from the bath and adds the contents to the
corresponding sample pot (see note above relating to floor models).
THE MASHING CONTINUES:
At the end of the program, the slower END alert (#3)
sounds and the pots may be allowed to remain in a warm bath or they may be cooled slowly
or quickly. This ‘end cycle’ action is selected by the operator as he/she edits the program.
Various programs require different end cycles. The program remains in cycle while the bath
draining and filling actions take place.
When the samples are removed from the bath, the RESET button cancels all program
function and the system resets back prior to step zero. The cooler in the distilled water tank
is fed with cold water and the d/w tank refills and cools quickly to prepare for the next
mashing cycle.
THE CONTROL OF THE BATH:
The control of the mashing process is performed by a touch screen PLC. This controller
permits programming of all 8 steps of all 8 programs. It controls the functions of all the
filling, draining, temperatures, alerts, circulation pumps, dispensing valves and tank levels
and so on as well as providing numerous on-screen operator assistance signals. In each
program, it performs GO, STEP, HOLD, RESET functions throughout the program pattern
selected.
The stirrers are adjustable for speed, the alerts are adjustable for volume and temperatures
of the bath and distilled water (floor models only) can be trimmed for best accuracy…. See
later in this manual.
In the floor mounted machines, the distilled water volumes are set inside each program and
the operator is not required to measure volumes. However, if a special volume needs to
be used or trialed, it can be set without altering a program and used during any program.
See later in this manual.
