4-23
4.2.13 Air-cooled condenser and evaporator
This finned coil is compact and has uniform
heat exchanging performance and high heat
exchanging efficiency due to the adoption of
corrugated fins.
●
Washing of air-cooled condenser
Carefully flush the air-cooled condenser with
fresh water after trip, although this type of
condenser employs thick fins and
electrodeposition coating for high corrosion
resistance.
●
For the maintenance of the air-cooled
condenser, remove the fan grille, fan guide
and temperature recorder box. For the
maintenance of the evaporator, remove the
rear panel of the evaporator.
Air cooled condenser
Evaporator
y
Apply the heat shrinkage tube in the following
position, then shrink it with hot air of a dryer.
u
Apply sealer between the heat shrinkage tube
and the flare nut. (Sealer :KE4898)
i
Fix the low pressure transducer with the
clamp plate, and fix the cable with the binding
band.
Fix the shrinkage tube end of the cable side
downward for prevention of water entering
into the tube.
r
Dryer
Make the heat shrinkage
tube fit in this area
Gauge
pipe side
Low pressure
transducer cable side
q
Heat shrinkage tube
w
Connector
e
Flare nut
Sealer
4.2.12 High pressure transducer (HPT)
The HPT is located in the refrigerant circuit.
The operating high pressure value is displayed
on the controller indication panel.
(1) Replacement procedure
The replacement procedure is the same as
that for the low pressure transducer.
Make sure that the fixing position and the
cable connection is correct.
●
Replacement of fusible plug
If pressure rises abnormally in the refrigeration
circuit, the fusible plug is automatically
activated, so, thoroughly check the possible
causes if the fusible plug melts.
If the fusible plug is activated, the fusible alloy
q
melts and refrigerant blow out (Melting
point: 95˚C ~100˚C).
For replacement,
q
-
e
shall be replaced.
4.2.14 Fusible plug
Receiver
Fusible plug
q
Cap
w
Body
e
Fusible plug
q
Clamp plate
Fix the tube directing
the end downward
w
Binding band
Model
NSK
Transducer type
NSK-BC030F
Identification
color
Transducer
Red & Brown body
Connector
Nothing
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