Hoshizaki AM-50BAE - Manual (Page 25)

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WATER AND REFRIGERATION CIRCUIT
AM-150BAF
Note: All Hoshizaki ice machines are critically charged. Since the AM-series have small refrigeration circuits this is
especially true. The AM-series does not come from the factory with any type of refrigeration system access. In the event
that the system must be accessed for troubleshooting it will be necessary to install piercing type “saddle valve” on the
system. These valves should only be installed on the process tubes provided on the low side and high side of the system.
After the repair has been made to the unit, sweat type schraders should be installed in place of the piercing valves.
Again, these units are critical charged. Every precaution should be taken to insure that the exact charge of R134a for the
AM-50 and AM-100 and R-404a for the AM-150 is weighed into the system. Due to the very small charge of these units,
extra care must be taken to avoid any refrigerant loss when removing gauges.
Low side process tube
High side process tube
AM-150BAF 9.5oz R-404a