Grindmaster PM4-B Brix Setup cont, Brix Set Procedure, Page, Crathco Post Mix Beverage Dispensers

(Figure D)

correct value with the use of a refractometer. Setting brix by taste is an acceptable method and usually gives

+0.5-0.8 brix error.

Brix Setup (cont.)

Mixing water with a concentrate in this dispenser was designed at the following conditions:

1.The initial temperature of a concentrate (syrup) used in the dispenser should be 39-41ÞF (4-5°C).

2.The initial temperature of the water supplied by the dispenser cooling system is 39ÞF (4°C).

3.The static water pressure should be set to 29PSIG.

The pressure regulator gauge should show 29PSIG (2 bar) when there is no water flow.

It is very important to apply the concentrate at the noted temperature since a concentrate changes its viscosity when it cools down. A dramatic change of the viscosity (thickness of concentrate) causes the pumps capacity to change resulting in the need to readjust the brix level.

The machine provides cooling to keep syrups or concentrates in the correct temperature. If the initial temperature of syrup or concentrate is the room temperature when the brix is set, after approximately one hour the syrup or concentrate will be cooled down to 39-41ÞF (4-5ÞC). As a result your brix setting will change. Therefore it is rec- ommended that syrup or concentrate should be refrigerated prior to setting brix.

Brix Set Procedure

The brix number for given flavors is shown in the table. If the table does not include information for a particular flavor, temporarily use the taste method and request information from a concentrate supplier.

Assuming that correct temperature of orange concentrate is applied to the first dispensing head and syrups are applied to the remaining dispensing heads proceed as follows:

1.Set the water pressure to 2 bar (29 Psig) static.

2.Depress chosen dispensing push button and hold until water from the dispensing nozzle changes color.

3.Release push button. Depress push button again dispensing drink into the cup.

4.Measure a brix level. If the brix is too rich (higher number than expected) the concentrate pump needs to be slowed down by turning corresponding potentiometer on the controller board counterclockwise (potentiometer called Pump #1 on the controller board corresponds with push button #1 and so on.)

The controller board can be found on the right hand side in the front of the machine behind the splash panel. If potentiometer is already all the way to the left, the water pressure must be increased

assuming that a concentrate temperature is at 39-41ÞF(4-5°C). Please, note that water pressure change will cause brix change on other dispensing heads if they were set previously. (See figure D)

If brix is too weak the pump speed must be increased by turning the corresponding potentiometer clockwise.

If there is problem setting up brix, refer to brix problem troubleshooting.

Page 6 Crathco® Post Mix Beverage Dispensers