WOLSELEY Beermaster Plus BMIE-448-69, Инструкция по установке и обслуживанию, Страница: 19 / 36

19
Cooling
18. BMIEP functions
Electronic controller
The BMIEP controller has a setpoint operating range of 4 to 32°C (Normal operation range 10-13°C.) For operating temperatures below
8°C, a defrost sensor should be fitted (Wolseley pt. no. 684226). For more information on this, please see the section below on defrost.
The controller has two LEDS that indicate controller state, as described below.
There is a 5-minute anti-cycle timer that is used to protect the compressor from excessive starting/stopping. The anti-cycle
timer is operational immediately on power up and prevents the compressor from starting within the first 5 minutes of the unit
being turned on.
Controller set-point adjustment
There are two buttons for operating the controller. To adjust the set point,
• Press both left and right button simultaneously for 5 seconds to enter “set” mode. The 2 LEDs should illuminate, and the
display should flash when in “set” mode.
• Left button is used to reduce the set point.
• Right button is used to increase the set point.
Controller operation
• In “set” mode, cooling and heater are disabled and the anti-cycle timer is reset inhibiting cooling for 5 minutes.
• “Control” mode is re-established if no button is pressed for 3 seconds and revised set point is accepted.
• In “control” mode, the display shows the actual cellar temperature.
• The temperature set point is the only adjustable parameter.
Defrost
Important: ensure that energy saving mode is disabled in order to use defrost. As per below on evaporator energy saving this
means that the relevant jumper must be in the ‘C’ position. Please see on evaporator energy saving for instructions on how to
change this.
To enable cooling below 8°C, an additional sensor is required to sense the evaporator coil temperature. With this additional
defrost sensor in place the setpoint can be lowered below 8°C.
The secondary sensor should be fitted into the bottom part of the evaporator coil (defrost sensor). It should be inserted between
two fins on the air-on side and pushed firmly into the coil. The two fins should be closed around the sensor to keep it in position.
When this second sensor is fitted, the controller will initiate an off cycle defrost every 60 minutes. During defrost, cooling is
stopped and all the fans are running. The controller will indicate this by both LEDs being on. Defrost is terminated after 30
minutes or if the defrost sensor temperature rises above “set point +1°C”. The evaporator coil should be inspected after initially
running for 12 to 24 hours. If any ice has built up, the defrost sensor should be relocated to (or near to) where the ice formed. The
coil should be fully defrosted before continuing. The defrost regime is not adjustable.
• Cooling is switched on when the cellar temperature
is 2°C above the set point. (Top LED on)
• Heating is switched on when the cellar temperature
is 3°C below the set-point. (Bottom LED on)
• Defrost enabled (Two LEDs on)
• Cooling is switched off when the cellar temperature
is 1°C below the set point. (No LEDs on)
• Heating is switched off when the cellar temperature
is at the set-point temperature (No LEDs on)