Vii. removal and replacement of components, Service for refrigerant lines, A] service information – Twin Eagles AM-50BAE-AD User Manual
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U1VA6060209
VII. Removal and Replacement of Components
IMPORTANT
Ensure all components, fasteners and thumbscrews are securely in place
after the equipment is serviced.
1. Service for Refrigerant Lines
[a] Service Information
1) Allowable Compressor Opening Time and Prevention of Lubricant Mixture [R134a]
The compressor must not be opened more than 30 minutes in replacement or service. Do
not mix lubricants of different compressors even if both are charged with the same refrigerant,
except when they use the same lubricant.
2) Treatment for Refrigerant Leak [R134a]
If a refrigerant leak occurs in the low side of an ice maker, air may be drawn in. Even if the low
side pressure is higher than the atmospheric pressure in normal operation, a continuous
refrigerant leak will eventually reduce the low side pressure below the atmospheric pressure
and will cause air suction. Air contains a large amount of moisture, and ester oil easily absorbs
a lot of moisture. If an icemaker charged with R134a has possibly drawn in air, the drier must
be replaced. Be sure to use a drier designed for R134a.
3) Handling of Handy Flux [R134a]
Repair of the refrigerant circuit requires brazing. It is no problem to use the same handy flux
that is used for the current refrigerants. However, its entrance into the refrigerant circuit should
be avoided as much as possible.
4) Oil for Processing of Copper Tubing [R134a]
When processing the copper tubing for service, wipe off oil, if any used, by using alcohol or
the like. Do not use too much oil or let it into the tubing, as wax contained in the oil will clog the
capillary tubing.
5) Service Parts for R134a
Some parts used for refrigerants other than R134a are similar to those for R134a. But never
use any parts unless they are specified for R134a because their endurance against the
refrigerant have not been evaluated. Also, for R134a, do not use any parts that have been
used for other refrigerants. Otherwise, wax and chlorine remaining on the parts may adversely
affect R134a.