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Figure 2: Control and regulation panel mounted on helical-rotary units equipped with UCM-CLD
Operator’s interface (Figure 1)
Digital display
The display of control regulation and operating
parameters, as well as diagnostic and error messages,
is made on a two-line 40-character liquid crystal
display.
When powering-up the system, the display is not lit
and the message “Self-test in progress” is displayed in
order to make sure the display operates properly.
The screen allows to display:
- The error codes.
- The settings of the various setpoints.
- The specified temperature and pressure values.
- The status of operating parameters and various
options.
Keyboard
A 16-key touch pad allows the operator to move within
the various menus and to modify their parameters and
setpoints.
The keys are divided into two groups.
Menu keys
- Chiller Report menu
- Custom Report menu
- Refrigerant menu
- Compressor menu
- Operator settings menu
- Service settings menu
- Service test menu
- Diagnostics menu
These 8 keys allow to access each of these menus.
Control keys
- + key
- - key
- Previous key
- Next key
- Enter key
- Cancel key
- Auto key
- Stop key
These 8 keys allow the operator to move within the
various menus and to modify their parameters.
Remark:
All the menus and setpoints cannot be
accessed by the chillers operator; Service Settings
and Service Test menus are protected by a password
and are reserved for Trane engineers.
