Sanyo MBR-1404GR User Manual download pdf (Page 18)

OPERATING INSTRUCTIONS

Temperature display

The unit is set at the factory to obtain the proper temperature automatically (4

C±1.5

C). The high

temperature alarm is preset at 6

C. The low temperature alarm is preset at 2

Table 1. Temperature display ●: Lamp ON ○: Lamp OFF

Operation

Key

operated

Display Display mode

1 Plug-in, Power ON

Average monitor bottle

temperature

Average temperature

2 Press temp. display key

Upper monitor bottle

temperature

Upper temperature

3 Press temp. display key

Lower monitor bottle

temperature

Lower temperature

4 Press temp. display key

Average monitor bottle

temperature

Average temperature

5 Repeat from 2

Note: The displayed temperature represents the temperature sensed by a thermal sensor attached to

the monitor bottles mounted to the upper and lower portion of the chamber. The displayed temperature

may not always be at 4

C. The chamber probes are representative and high and low average

temperatures within the chamber.

Defrost cycles

There is no need for routine defrosting of the unit as this occurs automatically as follows:

1. Cycle defrost

To keep the temperature stable inside the chamber, the refrigeration compressor is cycled on and off.

During “off “ periods any frost which has accumulated on the evaporator is melted by energizing a defrost

heater. This will not have any discernible effect on the chamber temperature.

2. Forced defrost

When the ambient humidity is high, or a large amount of damp product is being stored inside the chamber,

there is a possibility that cycle defrost may not be enough to remove all of the frost on the evaporator. In

this case, a forced defrost cycle can be initiated. When the unit is operating under a forced defrost cycle,

the current chamber temperature and dF is displayed alternately on the digital temperature display.

Once the forced defrost cycle is complete, normal operation resumes. The chamber temperature of

blood bag (400 ml) rises about 1 to 2

C during the defrosting.

●UPPER

●LOWER

○UPPER

●LOWER

●UPPER

○LOWER

●UPPER

●LOWER

UPPER

LOWER

UPPER

LOWER

UPPER

LOWER

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Sanyo MBR-1404GR User Manual Page 18

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