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Summary of Contents for Mueller E-Star OESE
- Page 1 E-Star® OESE Condensing Unit 7.5 and 9 HP HFC INSTALLATION AND OPERATION MANUAL Part No. 8828748 Effective June 16, 2020...
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Page 3: Table Of Contents
Figure 2: Refrigerant Piping Schematics ................. 9 Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. - Page 4 Safety Alert ....................... . 23 Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No.
- Page 5 ..............36 Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No.
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Page 7: Section 1.0 - Introduction
Section 1.0 – Introduction 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: • 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. -
Page 8: Technical Support
TECHNICAL SUPPORT This manual provides basic installation and operating information for Mueller E-Star OESE condensing units. Please contact your local Paul Mueller Company Sales and Service Representative if you require additional technical assistance pertaining to installation or operating procedures. Manufacturer’s support is available by contacting the following:... -
Page 9: Section 2.0 - Installation
IMPORTANT: Equipment used to move or lift this equipment must be rated for the weight of the equipment. See Table 1 for equipment weight. LOCATION When choosing a location for the Mueller E-Star OESE condensing unit, consider these items: • Environment: The unit must be located where it is protected from extreme temperatures of –30°F (–34.4°C) and below or 115°F (46.1°C) and above. - Page 10 Discharge Line Horsepower Liquid Line Suction Line (Fre-Heater®) ⁄ ⁄ ⁄ ⁄ ⁄ ⁄ ⁄ ⁄ ⁄ ⁄ ⁄ ⁄ Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020...
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Page 11: Electrical Connections
Following local and NEC (National Electrical Code) regulations and procedures, connect a fused disconnect power supply of the proper voltage and phase to the E-Star OESE condensing unit’s electrical enclosure. The control circuit is designed to be operated by a 24-VAC supply. Read the warning statement below. -
Page 12: Section 3.0 - Refrigerant Charging
Section 3.0 – Refrigerant Charging EPA REFRIGERANT REGULATIONS Mueller OESE condensing units are designed to operate with R-507 refrigerant. R-507 refrigerant is specified by ASHRAE Standard 34 Safety Classification as an “A-1” refrigerant with low flame propagation and low toxicity. -
Page 13: Final Operating Charge
When refrigerants come in contact with an open flame or a high heat source, dangerous gases will form. This is characterized by a strong acidic odor. Immediately vacate the area and ventilate prior to reentry. Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748... -
Page 14: Section 4.0 - Operating Features
Section 4.0 – Operating Features REFRIGERANT CYCLE The E-Star OESE refrigeration system utilizes an expansion valve (TEV) that controls the evaporator superheat. The expansion valve must be field adjusted to maintain the milk cooler evaporator’s superheat at 4–6°F (2.2–3.3°C) or the chiller evaporator’s superheat at 10–12°F (5.6–6.7°C). - Page 15 This is a custom-designed accumulator heat exchanger. To ensure proper system operation, a genuine Mueller accumulator heat exchanger must be used. Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020...
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Page 16: Section 5.0 - Expansion Valve
(2.2–3.3°C) or the chiller evaporator’s superheat at 10–12°F (5.6–6.7°C). Proper location and sizing of the thermal expansion valve is critical. Refer to Section 5.2 for the superheat adjustment procedure. An externally equalized TEV must be used on Mueller milk cooling applications. A sight glass must be installed at the TEV inlet. -
Page 17: Checking And Adjusting Superheat
• Actual suction line temperature equals 40°F. 60 PSIG Results: • 40°F – 34°F = 6°F (4.4°C – 1.1°C = 3.3°C) superheat at evaporator. Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 18: Section 6.0 - Accumulator Heat Exchanger
IMPORTANT: The custom Mueller accumulator heat exchanger utilizes a special “pancake” heat exchange coil. The use of a generic (spiral) accumulator heat exchanger will severely reduce cooling capacity of the E-Star OESE condensing unit and may cause premature compressor failure. Use genuine Mueller replacement parts only. -
Page 19: Section 7.0 - Electrical
Code 8 displays for 24 hours after last detection. With Terminal D energized, the M1–M2 relay will open during a protection shutdown. To reset module, cycle module power. Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748... -
Page 20: Coresense Protection Module Connection Wiring
3 A, the module may indicate a fault condition and alarm. Maximum continuous contactor coil current is 2 A with a maximum in rush current of 20 A. Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748... -
Page 21: Copeland Scroll Compressor Functional Check
(e.g., pressures and voltages). Significant deviation (± 15%) from published values may indicate a faulty compressor. Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748... -
Page 22: Section 8.0 - Electrical Schematics
6. Fan may start automatically even if the compressor is not running. 7. All grounds terminate in the control box. Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 23: Oese 7.5 And 9 Hp, 380/50/3, 460/60/3, 575/60/3
6. Fan may start automatically even if the compressor is not running. 7. All grounds terminate in the control box. Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 24: Section 9.0 - Pressure Switches And Fan Control
The high-pressure switch should be replaced if it does not operate as indicated above. RGE ELECTRONIC FAN PRESSURE CONTROL The Mueller E-Star OESE condensing unit uses an electromagnetic variable speed fan control to allow the fan motor to operate at variable speeds at different ambient temperatures. -
Page 25: Rge Electronic Fan Pressure Control Setpoint Adjustment
The off-cycle switch will operate the fan at full speed if high side pressure rises above 270 psig and operate until pressure falls below 220 psig. Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748... -
Page 26: Schrader Core Identification
NOTE: All high-side pressure safety connections will not have a Schrader core. This is due to a safety regulation on the high side of a system. Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748... -
Page 27: Section 10.0 - Equipment Sound Level
10.1 SOUND TESTING EQUIPMENT The manufacturer tested sound levels of the Mueller E-Star OESE condensing unit under normal operating conditions with the compressor and condenser fan motor operating. Measurements were taken with a sound meter, Model 33-2055, on the “A-weighted” scale. -
Page 28: Section 11.0 - Maintenance
*Provide the actual time below. Readings should be taken at five-minute intervals. Compressor Amperage Time* Measured Supply Voltage: Condensing Unit Model and Part No.: Serial No.: Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 29: Maintenance Procedures
11.2 MAINTENANCE PROCEDURES The E-Star OESE condensing unit requires minimal maintenance. The following scheduled maintenance procedures are recommended and should be performed by a knowledgeable service technician on an annual basis: Clean the condenser tubes and fins from accumulated dust or other foreign matter to ensure proper air flow. -
Page 30: Section 12.0 - Disposal
Section 12.0 – Disposal 12.1 GENERAL If the E-Star OESE condensing unit is removed for resale or disposal, ensure the materials, refrigerant, and oils are handled and/or disposed of according to applicable codes and regulations. 12.2 COMPRESSOR REFRIGERANT OIL The compressor contains a lubricant consisting of polyolester (POE) oil. Dispose of in accordance with local regulations. -
Page 31: Section 13.0 - Equipment Markings
Leak test and evacuate Run test unit Dry nitrogen holding charge: Manual Part No.: Final Inspection: Date: 1806 8822574 Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 32: Label No. 8820155, Wiring Connections For Three-Phase Scrolls
Peso 0408 8822225 13.7 LABEL NO. 8822232, WARNING SYMBOL: HOT 6911 8822232 13.8 LABEL NO. 8820623, WARNING SYMBOL: ELECTRICAL Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 33: Label No. 8822226, Warning: Screen Guard Removal
ÊTRE EN PLACE AVANT DE FAIRE FONCTIONNER L'APPAREIL. PELIGRO LA TELA DE PROTECCION DEBE DE ESTAR SITUADA ANTES DE OPERAR LA UNIDAD. 8906 8820768 Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 34: Label No. 8820769, Warning: Fan Will Start Automatically
DÉMARRERA AUTOMATIQUEMENT. PELIGRO EL ABANICO COMIENZA AUTOMATICAMENTE. 8906 8820769 13.14 LABEL NO. 8824383, MUELLER LOGO 13.15 LABEL NO. 8822705, CSA Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 35: Section 14.0 - Safety
Technicians handling refrigerants should wear side-shielded safety glasses, impervious (preferably butyl-lined) gloves, and other protective equipment or clothing as required for the situation. Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748... -
Page 36: Section 15.0 - Technical Data
8827003 9 HP, Three-Phase Unit, ZB66K5E, R-507 8825840 8825850 OESE-A94-HFC 8827004 9 HP, Three-Phase Unit, ZB66K5E, R-507 8825840 8825850 Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 37: Section 16.0 - Data Charts
Nominal Performance Values (± 5%) based on 72 hours run-in. Subject to change without notice. Current @ 230 V. ©2018 Emerson Climate Technologies, Inc. Printed 5/7/2018 Autogenerated Compressor Performance 11-88 2051 Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 38: Zb58K5E-Tfd 3-Phase, 7.5 Hp, 460 V Compressor Data Chart
Nominal Performance Values (± 5%) based on 72 hours run-in. Subject to change without notice. Current @ 460 V. ©2018 Emerson Climate Technologies, Inc. Printed 5/7/2018 Autogenerated Compressor Performance 11-88 2051 Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 39: Zb66K5E-Tfc 3-Phase, 9 Hp, 208-230 V Compressor Data Chart
Nominal Performance Values (± 5%) based on 72 hours run-in. Subject to change without notice. Current @ 230 V. ©2018 Emerson Climate Technologies, Inc. Printed 5/7/2018 Autogenerated Compressor Performance 11-90 2051 Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 40: Zb66K5E-Tfd 3-Phase, 9 Hp, 460 V Compressor Data Chart
Nominal Performance Values (± 5%) based on 72 hours run-in. Subject to change without notice. Current @ 460 V. ©2018 Emerson Climate Technologies, Inc. Printed 5/7/2018 Autogenerated Compressor Performance 11-90 2051 Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 41: Section 17.0 - R-507 Pressure Temperature Chart
126.90 60.56 141.00 67.39 153.30 -2.31 27.85 18.26 64.87 32.54 90.57 43.67 110.60 52.84 127.10 60.67 141.20 67.45 153.40 Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... -
Page 43: Section 18.0 - E-Star Oese Installation Survey
*Provide the actual time below. Readings should be taken at five-minute intervals. Compressor Amperage Time* Measured Supply Voltage: Condensing Unit Model and Part No.: Serial No.: Mueller E-Star OESE 7.5 and 9 HP HFC Condensing Unit Installation and Operation Manual, Part No. 8828748 Effective June 16, 2020... - Page 46 1600 West Phelps Street | Springfield, Missouri 65802, U.S.A. DFE Service: 1-800-756-5991 | DFETechService@paulmueller.com 1-800-MUELLER | WWW.PAULMUELLER.COM ©2020 Paul Mueller Company | 20-DFESGF-0142 | 8828748...
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