Mueller E-Star OESE 3.5 and 5 HP HFC Condensing Unit
Installation and Operation Manual, Part No. 8828747 Effective April 13, 2020
1.1 GENERAL SPECIFICATIONS
Mueller® E-Star OESE condensing units are engineered to maximize the energy efficiency and cooling capacity of
a milk cooling system. Custom and specialized components consist of the following:
1. A quiet, energy-efficient Copeland® “ZB” scroll refrigeration compressor, designed for commercial
refrigeration service rather than air conditioning, provides improved performance over the entire milk cooling
temperature range. An oil sight glass, oil fill/drain port, and screw electrical terminals are added bonuses that
ensure long-term reliability and serviceability.
2. An accumulator heat exchanger with a proprietary subcooling coil maximizes refrigeration capacity while
protecting the compressor from liquid refrigerant.
3. A custom tube-and-fin condenser with rifled tubing and integral subcooling loop provides an enhanced heat
exchange surface. The subcooling loop maintains subcooled liquid refrigerant to the thermal expansion valve,
ensuring maximum evaporator efficiency.
4. A single, variable speed, high-efficiency fan motor provides maximum condensing efficiency over a wide range
of ambient temperatures.
5. An electrical enclosure is designed for safety, ease of installation, and serviceability. A resistive heater is
included for reeliable operation during colder ambient temperatures.
6. The three-piece galvanized steel cover with an attached steel grill provides safe operation plus offers easy
service access.
7. Rust-resistant brass service valves are located for easy access without removing the cover.
TABLE 1: DIMENSIONS AND WEIGHT FIGURE 1: DIMENSIONS AND WEIGHT
1
Section 1.0 – Introduction
40
1
⁄
8
˝
30
3
⁄
8
˝
31
1
⁄
2
˝
Width 101.92 cm 40
1
⁄8 in
Depth 77.15 cm 30
3
⁄8 in
Height 80.00 cm 31
1
⁄2 in
Approximate
Weight
5 HP 176 kg 388 lb
3.5 HP 162 kg 358 lb
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