Heatcraft Refrigeration Products 25001401, Инструкция по установке и эксплуатации

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10
Initial Power On
At the initial application of power to the system, the compressor and
the evaporator fans will be in a 4 minute hold-off cycle and will not
start immediately. When there is a call for
COOLING , the expansion
valve (EEV) opens, then the compressor is started. The compressor
will then run for a minimum of 2 minutes in the "hold-on" cycle.
(This means that the compressor will run for a minimum of 2
minutes before shutting off even if the box temperature is met).
The LED alternately displays
BOX TEMPERATURE and MODE of
operation. On a call for cooling,
dLY
will show while the expansion
valve is opening. After the compressor starts the LED will alternately
display
BOX TEMPERATURE and
Coo
.
On multiple evaporator systems, the MASTER evaporator will display
BOX TEMPERATURE and
Coo
. The SLAVE evaporators will display
Coo
only.
When the room thermostat setting is satisfied, and if the compressor
ran for at least 2 minutes, the EEV will close and the system will
pumpdown and shut off. The evaporator fans will continue to run.
The LED will alternately display
oFF
and BOX TEMPERATURE .
Start-Up Operation
When the room sensor detects a rise in temperature of
approximately 2°F, and the compressor has been off for at least 4
minutes, the EEV will open to its last position and the compressor
will start. The valve is then adjusted as necessary to obtain the
setpoint superheat setting. During this time, the compressor will run
for a minimum 2 minutes “hold-on” cycle.
The four minute “ HOLD-OFF ” can be bypassed and the system
started immediately by pressing the “ RESET ” button on the Beacon
II board.
Operating Mode Display
oFF
- Off
Coo - Cooling
Pdn - Pumpdown
dEF - Defrost
drn
- Draining
dLY
- Delay
tSt - Test
SEr - Service
IMPORTANT NOTE:
When a board is installed and power is applied to the system, the following initialization steps should be taken for EACH BOARD in system:
1. Press and Hold the "
ENTER
" button
2. While continuing to hold the "
ENTER
" button, press and hold the "
CLEAR/TEST
" button. " 888 " will display on the LED display.
3. Continue to hold both "
ENTER
" and "
CLEAR/TEST
" until " EE? " displays on the LED.
4. Once " EE? " displays, immediately release and the press the "
ENTER
" again.
5. The board will now re-initialize and return to the normal display.
If "
nch
" is displayed, then the board did not properly initialize and the steps 1-5 should be re-taken.