MELAG MELAtherm 10 Evolution - Exceptions When Setting up at Altitudes

4 Commissioning
21
Converting the ascertained metering quantities of the process agents
Based on the ascertained density and the metering quantities in gramme [g] it is possible to convert the
metering quantity of the process agents in millilitre [ml].
The following example shows the ascertainment of the metering quantity of the cleaning agent in millilitre.
The ascertainment of the metering quantity of the other process agents can be done the same fashion.
Metering quantity [ml] =
Metering quantity [g]
Density [g/ml]
Metering quantity =
30.8 g
1.1 g/ml
= 28 ml
Example:
For example, the cleaning agent weighed 30.8 g in the Universal-Program. => Metering quantity = 30.8 g
The ascertained density of the cleaning agent is 1.1 g/ml.
Checking the metered quantity actual / target
Using the log printout of the previous program, compare the nominal metering values of the process
agents with the ascertained values. A maximum deviation of +/-10% is permissible. Should larger devia-
tions occur, ascertain the metered quantity/minute for the corresponding pump again. Finally re-check the
actual metered quantity in the corresponding partial cycle.
The following example serves to ascertain the percentage deviation between the nominal and the actual
value of the metered quantity of the cleaning agent Apply the same procedure for other process agents.
Read off the nominal value of the cleaning agent from the program log and compare this value with the
calculated actual value before calculating the percentage of deviation.
Example:
Calculated metering quantity: V (actual) = 28 ml
Metering quantity acc. to log printout: V (target) = 27.8 ml
The check of the metering quantity reveals a deviation of 0.7%.
V (actual)
V (target)
100 %
x =
x
x = 0.7 %
28 ml
27.8 ml
100 %
-1
x
-1
Exceptions when setting up at altitudes
In high altitude areas, the boiling temperature of the washing liquor is reduced which requires a reduction
of the disinfection temperature.
PLEASE NOTE
If the process-relevant parameters (VRP) are not set according to the altitude area at the
site of installation, then a malfunction might be the consequence.
n Perform the parameter settings for all available programs.