Refrigeration Circuit - Sanyo MDF-U333 Service Manual

Biomedical freezer
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Refrigeration circuit

MDF-U333
Parts description
Evaporator
Dehydrator
Capillary tube
Condenser assembly A
Condenser assembly B
Frame pipe
Evacuation and vacuum
pressure
Refrigerant and oil
Refrigeration circuit spec.
and welding points
Type
Material
Type of molecular sieves
Charged q'ty
Resistance
Dimension
Resistance indicator color
Type
Dimension
Type
Dimension
Material
Dimension
Evacuation time: over than 20min. by 2 ports (high pressure and low
pressure side). (N2 exchange)
When charged, vacuum pressure is lower than 1.0torr
(pump capacity: 300L/min)
Refrigerant : R-134a
Oil : CF-32
Oil additive: n-pentane
Refer to following pages
− 12 −
Specification
Tube on sheet
Aluminum (φ 8.0)
4A-XH9(134 stamped)
8±1g
0.686MPaG (7Kgf/㎠ G)
φ 1.8×(φ 0.65)×2000mm
White
Wire and tube
w
P
480×
40×30 columns
Wire and tube
w
P
480×
40×30 columns
Note: Lower 2 columns are used
in desuper circuit.
C1220T-1/2H
φ 4.0×
0.5
Charged q'ty : 226±5g
Charged q'ty : 230±10cc
Charged q'ty : 14g
Unit:mm

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