Refrigeration System - Follett Maestro Plus MC 414A Series Installation, Operation And Service Manual

Air-Cooled ice machine capacity/24hrs. - 230 V/50 Hz
(R290 refrigerant)
Ambient Air Temperature F/C
F 60 70
C 16 21
50
460 425
10 208 193
60
437.5 405
16
198 184
70 415 385
21
188 175
80 405 375
27 184 170
90
395 365
32 179 166
Note: Nominal values - actual production may vary by ±10%.

Refrigeration system

Important: All service on refrigeration system must be performed in accordance with all federal, state and
local laws that pertain to the use of refrigerants. It is the responsibility of the technician to ensure that these
requirements are met.
R414 ice machine charge specifications
Model
E414 230 V, 50 Hz air-cooled
Refrigerant replacement requirements
1. Non-contaminated refrigerant removed from any Follett refrigeration system can be recycled and returned
to the same system after completing repairs. Recycled refrigerant must be stored in a clean, approved
storage container. If additional refrigerant is required, virgin or reclaimed refrigerant that meets AHRI
standard 700-2016 must be used.
2. In the event of system contamination (for example, a compressor burn out, refrigerant leak, presence of
non-condensibles or moisture), the system must be repaired, evacuated and recharged using virgin or
reclaimed refrigerant that meets AHRI standard 700-2016.
3. Follett LLC does not approve of recovered refrigerants. Improper refrigeration servicing procedures will
void the factory warranty.
Evacuation
Evacuate the system to a level of 500 microns. When the 500 micron level is reached, close valves and both
manifold and shut down the vacuum pump. Allow the system to sit for approximately 20 minutes. During this period
the system pressure should not rise. If the system pressure rises and stabilizes there is moisture in the system and
further evacuation is needed. If the pressure continues to rise check the system for leaks.
24 MC_414A, MF_414A R290 230 V/50 Hz Ice Machines
80 90 100
27 32 38
390 355 320 lbs.
177 161 145 kg.
372.5 340 307.5 lbs.
169 154 139 kg.
355 325 295 lbs.
161 147 134 kg.
345 315 285 lbs.
156 142 129 kg.
335 305 275 lbs.
152 138 125 kg.
3.52 oz (100 grams)
Charge Refrigerant type
R290