Gree Dettson LOMO 19 Installation Manual page 46

Service Manual
overload power turn-off temperature
frequency by reducing 8Hz/90s till the lower limit; After it was
running 90s at the lower limit, if [T
]≤T
temperature at normal speed outer pipe
machine stopping;
4. Reducing frequency at high speed and stop machine:
If [T
Cooling overload frequency reducing temperature at high speed
overload power turn-off temperature
frequency by reducing 30Hz/90s till the lower limit; After it was
running 90s at the lower limit, if [T
] ≤[T
temperature at normal speed outer pipe]
machine stopping;
5. Power turn-off:
If the [T
Cooling overload power turn-off temperature
overload protects machine stopping; If [T
]and the compressor has been stopped
frequency-limited temperature
working for 3 minutes, the machine should be allowed to operate.
6. If the Cooling overload protection power turn-off continuously
occurs for six times, it should not be resumed automatically,
and you should press the ON/OFF button to resume if the fault
keeps on. During the process of running, if the running time of
compressor exceeds the t overload protection times zero clearing
time , the times of overload protection power turn-off should
be cleared to recount. The mode of stopping the machine or
transferring to supply air will clear the trouble times immediately
(if the trouble can not be resumed, transferring mode will not clear
it).
Overload protection function at the mode of heating
Starting estimation :
After the compressor stopped working for 180s, if T inner pipe T
heating overload frequency-limited temperature (the temperature
of hysteresis is 35.6ºF ), the machine is allowed to start, otherwise
it should not be started, and should be stopped to treat according
to the overload protection:
Clear the trouble at the mode of power turn-off / heating, and the
protection times are not counted.
1. Frequency limited
If [T
heating overload frequency-limited temperature
frequency reducing temperature at normal speed
raising of compressor.
2. Reducing frequency at normal speed and stopping
machine:
If T[
heating overload frequency reducing temperature at normal speed
overload frequency reducing temperature at high speed
compressor frequency by reducing 8Hz/90s till the lower limit;
After it was running 90s at the lower limit, if T heating overload
frequency reducing temperature at normal speed ≤T inner pipe,
then overload protects machine stopping;
3. Reducing frequency at high speed and power turn-off:
If [T
heating overload frequency reducing temperature at high speed
overload power turn-off temperature
frequency by reducing 30Hz/90s till the lower limit; After it was
running 90s at the lower limit, if T heating overload frequency
Technical Information
] , you should adjust the compressor
Cooling overload frequency reducing
, then Cooling overload protects
]≤T
outer pipe
], you should adjust the compressor
Cooling overload frequency reducing
, then Cooling overload protects
] ≤T , then Cooling
outer pipe
]<[T
outer pipe Cooling overload
]≤T <[T
inner pipe heating overload
] , you should limit the frequency
]≤T
inner pipe
], you should adjust the
]≤T
inner pipe
], you should adjust the compressor
reducing temperature at normal speed ≤T outer pipe, then Cooling
overload protects machine stopping;
4. Power turn-off:
If the [T
heating overload power turn-off temperature
protects machine stopping; If T inner pipe T heating overload
frequency-limited temperature and the compressor has been
[T stopped working for 3 minutes, the machine should be allowed to
Cooling
operate.
5. If the overload protection power turn-off continuously occurs for
six times, it should not be resumed automatically, and you should
press the ON/OFF button to resume if the fault keeps on. During
the process of running, if the running time of compressor exceeds
the t overload protection times zero clearing time , the times of
overload protection power turn-off should be cleared to recount.
The mode of stopping the machine or transferring to supply air
will clear the trouble times immediately (if the trouble can not be
resumed, transferring mode will not clear it). Protective function
for discharge temperature of compressor
1. Starting estimation:
After the compressor stopped working for 180s, if T
<T
Discharge limited temperature
), the machine is allowed to start, otherwise it should not be
started, and should be stopped to treat according to the discharge
temperature:
The machine should be stopped or transferred to supply air, the
trouble should be cleared immediately, and the protection times
are not counted.
2. Frequency limited
If [T
Limited frequency temperature during discharging
temperature at normal speed during discharging
raising of compressor.
3. Reducing frequency at normal speed and stopping
machine:
I f [ T
f r e q u e n c y r e d u c i n g t e m p e r a t u r e a t n o r m a l s p e e d d u r i n g d i s c h a r g i n g
≤T <[T
Discharge frequency reducing temperature at high speed during discharging
should adjust the compressor frequency by reducing 8Hz/90s till
the lower limit; After it was running 90s at the lower limit, if [T
reducing temperature at normal speed during discharging
discharge to protect machine stopping;
4. Reducing frequency at high speed and power turn-off:
If [T
frequency reducing temperature at high speed during discharging
temperature during discharging
the compressor frequency by reducing 30Hz/90s till the lower
<[T
heating
limit; After it was running 90s at the lower limit, if [T
temperature at normal speed during discharging
to protect machine stopping;
5. Power turn-off:
If the [T
Power turn-off temperature during discharging
discharge to protect machine stopping; If [T
temperature during discharging
<[T
heating
minutes, the machine should be allowed to operate.
6. If the discharging temperature protection of compressor
continuously occurs for six times, it should not be resumed
] ≤T
inner pipe
(the temperature of hysteresis is 35.6ºF
] ≤T
Discharge
] , you should limit the frequency
] ≤T
Discharge
] ≤T
], you should adjust
] ≤T , you should discharge
Discharge
] ≤T
Discharge
Discharge
] and the compressor has been stopped for 3
, then overload
Discharge
<[T
frequency reducing
]
], you
frequency
, you should
<[T
Discharge Stop
frequency reducing
, you should
]<[T
Limited frequency
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