EWAD120~340MBYNN
Packaged air-cooled water chillers
4PW22683-1
Operation manual
10
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 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 (only for EWAD240~340).
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 status of the
compressors at the moment of
shutdown.
To check which were the pressures of
the circuit 1 at the moment of shutdown.
To check which were the pressures of
the circuit 2 at the moment of shutdown
(only for EWAD240~340).
To check which were the total amount of
running hours of the compressor and
the ambient temperature at the moment
of shutdown.
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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 con-
troller's software version.
To consult information about the
PCB.
To check whether or not the emergency
stop device is active and if there is any
waterflow to the evaporator.
To check the status of the high pressure
switch, the reverse phase protector and
the overcurrent relay of circuit 1.
To check the status of the discharge
thermal protector and the compressor
thermal protector of circuit 1.
To check the status of the high pressure
switch, the reverse phase protector and
the overcurrent relay of circuit 2 (only
for EWAD240~340).
To check the status of the discharge
thermal protector and the compressor
thermal protector of circuit 2 (only for
EWAD240~340).
To check the status of the changeable
digital inputs.
Note that for a unit in a DICN system,
the inputs apply to this unit.
It will be the remote input on the master
unit however, that will be determining
for the operation of the unit.
To check the status of the power relays
od circuit 1.
To check the status of the power relays
od circuit 2 (only for EWAD240~340).
To check the capacity mode and
feedback of circuit 1.
To check the capacity mode and
feedback of circuit
2 (only for
EWAD240~340).
To check the status of the fanspeed
relays of circuit 1.
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