Caleffi 6000 User Manual

Page 37

Programs

The operation of the controller during disinfection can be set according to different programs, selected depending on the type of system and

its management:

Program 0
This program features continuous flow temperature adjustment with automatic disinfection within a time band that can be set as required. With

this program the return probe is not used; if present, it is only used as a monitor.

During the disinfection phase, the flow probe temperature must remain above SET2 for a time tDIS at least equal to tMIN, if this occurs then

disinfection has been successful.

As soon as there are the conditions to consider the disinfection successful, it is stopped If the disinfection is not successful, there is no alarm

signal.

Program 1A
This program features continuous flow temperature adjustment with automatic disinfection within a time band that can be set as required. With

this program the return probe is not used; if present, it is only used as a monitor.

During the disinfection phase, the flow probe temperature must remain above SET2 for a time tDIS at least equal to tMIN, if this occurs then

disinfection has been successful.

As soon as there are the conditions to consider the disinfection successful, it is stopped

If it is not possible to reach the disinfection temperature or it cannot be maintained for a sufficient period of time, the alarm for unsuccessful

disinfection is generated. The alarm is recorded in the log.

Program 1B
This program can only be set if the return probe is set as present.

It is identical to the previous program, the only difference being that the successful outcome of the disinfection phase is checked via the return

probe in relation to SET3 instead of via the flow probe in relation to SET2.

As soon as there are the conditions to consider the disinfection successful, it is stopped

If it is not possible to reach the disinfection temperature or it cannot be maintained for a sufficient period of time, the alarm for unsuccessful

disinfection is generated. The alarm is recorded in the log.

Program 2 (factory settings - default)
This program can only be set if the return probe is set as present.

It is identical to the previous program with only this difference: if the return temperature does not reach SET3 after a wait period (tWAIT) since

the start of disinfection, then the flow temperature SET2 is increased by a value equal to (SET3 - TR reached), considering the fact that SET2

cannot in any case exceed the limit of SETMAX.

This correction procedure (increasing only) for the disinfection SET is iterative: if necessary, it is repeated within the time span defined by

TimeON and TimeOFF at each time interval equal to tWAIT.

As soon as there are the conditions to consider the disinfection successful, it is stopped

If it is not possible to reach the disinfection temperature or it cannot be maintained for a sufficient period of time, the alarm for unsuccessful

disinfection is generated. The alarm is recorded in the log.

Interrupting disinfection
Disinfection can be interrupted while it is still in progress. On the working screen (which shows the message “disinfection running”), press
the OK button once. The display shows the message “Cancel disinfection?”; at this point, the OK button can be pressed to stop the disinfection

and return to the adjustment function (without going through the flushing phase).

If the the OK button is not pressed, after a timeout of about 3 seconds, the display goes back to displaying the message “disinfection running”.

Table of thermal disinfection programs

Program

Use of return
probe

Return probe
shown on LED
display

Adjustment
temperature

Disinfection
temperature

Alarm if
disinfection
unsuccessful

Recording in log if
disinfection
unsuccessful

As monitor only

SET 1

SET 2

As monitor only

SET 1

SET 2

YES

SET 1

SET 3

YES

SET 1

SET 3

+ modify SET 2

YES