EWWD120~540MBYNN
Packaged water-cooled water chillers
4PW22685-1
Operation manual
12
Timers menu
Safeties menu
The "safeties" menu provides useful information for trouble shooting
purposes. The following screens contain basic information.
Along with the basic information, more detailed information screens
can be consulted while the safety menu is active. Press the
q
key.
Screens "similar" to the following will appear.
History menu
The "history" menu contains all the information concerning the latest
shutdowns. The structure of those menus is identical to the structure
of the safeties menu. Whenever a failure is solved and the operator
performs a reset, the concerning data from the safeties menu is
copied into the history menu.
Additionally the number of safeties that already occured, can be
consulted on the first line of the history screens.
Info menu
Input/output menu
The "input/output" menu gives the status of all the digital inputs and
the relay outputs of the unit.
To check the actual value of the
general software timers.
To check the actual value of the
compressor timer. (first screen)
To check the actual value of the
compressor timers.
(second screen)
To check the actual value of the
compressor startup timers and the
stop timers.
To consult information about the unit
safety which caused the shutdown.
To consult information about the
circuit
1 safety which caused the
shutdown.
To consult information about the
circuit
2 safety which caused the
shutdown.
To consult information about the
network safety which caused the
shutdown.
To consult information about the dual
pump wich caused the shutdown.
To check the time and control mode
at the moment of the unit shutdown.
To check which were the evaporator
and condenser inlet water tem-
perature and the evaporator outlet
water temperature.
To check which was the evaporator
outlet water temperature of the circuit
at the moment of shutdown.
To check which was the status of the
compressors at the moment of
shutdown.
To check which were the pressures of
circuit 1 at the moment of shutdown.
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To check which were the pressures of
circuit 2 at the moment of shutdown.
To check which were the total amount of
running hours of the compressors and
the ambient temperature at the moment
of shutdown.
To consult time and date information.
To consult additional information
about the unit such as the unit type
and the refrigerant used.
To consult information about the
controller's software version.
To consult information about the
PCB.
To check whether or not the emergency
stop device is active and if there's any
water flow to the evaporator.
To check the status of the high pressure
switch, the reverse phase protector and
overcurrent relay for circuit 1.
To check whether or not the discharge
thermal protector or the compressor
thermal protector are activated for
circuit 1.
To check the status of the high pressure
switch, the reverse phase protector and
the overcurrent relay for circuit 2 (only
for EWWD360~540).
To check whether or not the discharge
thermal protector or the compressor
thermal protector are activated for
circuit 2 (only for EWWD360~540).
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