Cooling Fans MU Series Slim-Line, General-Purpose s 4.69 in. 1.5 in. thick ( 119 mm 38 mm thick) Ambient Temperature: 14 F to 14 F ( 1 C to 6 C) Operating Voltage Range: 1% Materials Frame: Die Cast Aluminum Blades: Resin Flammability Grade: V- Overheat Protection: Impedance Protected Bearings: Ball Bearings Specifications Type Voltage VAC Frequency Hz RSVJC Max. Max. Noise Current Power Air Flow Level A rmin W CFM m 3 min inh2o Pa db(a) 5 14..2 27 95.3 2.7.325 81 43 MU1238A-21B Single-Phase 115 6 13..18 35 16 3..325 81 46 Standard Single-Phase 22 5 13.5.1 27 95.3 2.7.325 81 43 MU1238A-51B Single-Phase 23 5 16..11 27 95.3 2.7.325 81 43 Single-Phase 23 6 13.5.1 35 16 3..325 81 46 5 12.5.16 23 77.7 2.2.29 52 38 MU1238B-21B Single-Phase 115 6 11.5.15 25 88.3 2.5.29 52 4 Middle Single-Phase 22 5 11.5.9 23 77.7 2.2.29 52 38 MU1238B-51B Single-Phase 23 5 14..9 24 81.2 2.3.237 59 39 Single-Phase 23 6 11.5.9 25 88.3 2.5.29 52 4 5 8..1 2 67.1 1.9.137 34 33 MU1238L-21B Single-Phase 115 6 7.5.9 19 63.5 1.8.11 27 32 Low Single-Phase 22 5 7.5.6 195 65.3 1.85.137 34 33 MU1238L-51B Single-Phase 23 5 9.5.6 2 67.1 1.9.137 34 34 Single-Phase 23 6 7.5.6 2 67.1 1.9.118 29 33 How to read the specifications Page E-13 Details of safety standards Page G-2 Air Flow Characteristics MU1238A MU1238B MU1238L [rmin] 28 24 2 16 12 8 4 7 6 5 4 3 2 1.3.25.2.15.1.5 5 Hz 5 Hz 6 Hz 6 Hz [rmin] 28 24 2 16 12 8 4 7 6 5 4 3 2 1.3.25.2.15.1.5 6 Hz 5 Hz 5 Hz 6 Hz [rmin] 28 24 2 16 12 8 4 7 6 5 4 3 2 1.3.25.2.15.1.5 5 Hz 6 Hz 5 Hz 6 Hz 2 4 6 8 1 12.5 1. 1.5 2. 2.5 3. Air Flow [m 3 min] 2 4 6 8 1 12.5 1. 1.5 2. 2.5 3. Air Flow [m 3 min] 2 4 6 8 1 12.5 1. 1.5 2. 2.5 3. Air Flow [m 3 min] E-36 ORIENTAL MOTOR GENERAL CATALOG 2324 System Configuration E-19 Accessories E-11
Frequency Audible Noise Level (db) Measured at a distance of 3.3 feet (1 m) from the fan intake side MU1238A 6 5 4 3 2 1 6 Hz 5 Hz 31.5 63 125 25 5 1 k 2 k 4 k 8 k 16 k 13 Octave Band MU1238B 6 5 4 3 2 1 6 Hz 5 Hz 31.5 63 125 25 5 1 k 2 k 4 k 8 k 16 k MU1238L 6 5 4 3 2 1 13 Octave Band 6 Hz 5 Hz 31.5 63 125 25 5 1 k 2 k 4 k 8 k 16 k 13 Octave Band Connection Diagram Line Terminals Protective Earth (P.E.) Thermostats (Sold Separately) Thermostats make it possible for fans to operate only when cooling is necessary, thereby conserving energy. Dimensions Scale 14, Unit = inch (mm) Weight: 1.2 lb. (.53 kg) d E1 4.126.12 (14.8.3) 4.69 ( 119) 4.126.12 (14.8.3) Protective Earth Terminal M4.31 (8) Rotation. 169 ( 4.3) 8 Holes Panel Cut-Out Scale 14, Unit = inch (mm) 4.57 (116) 4.126 (14.8) 4.57 (116) 4.126 (14.8) Outlet side 5.35 ( 136).24 (6) Air Flow Terminals.177 ( 4.5) 4 Holes 4.126 (14.8) 4.126 (14.8) Accessories (Sold Separately) Item Filter Screen (3.3 feet) (6.6 feet) FG12D FL12 FS12 PCA2B PCA2D2 Safety Standards 1 4.57 ( 116) Intake side 1.5(38).24 (6).177 ( 4.5) 4 Holes 1 These products have been designed to pass tests set forth under the UL and CSA standards for equipment used in fans. They conform to the standards only when used with an O. 2 These products conform to UL standards only when used with an O, and certified by CSA and Electrical Appliance and Material Control Law. 3 These products conform to UL standards only when used with an O, and certified by CSA standards. 2 3 Page E-12 E-16 E-17 E-18 Cooling Fans Introduction Thermostats MRS Variable Flow MU Long Life MDE MDS MD MB MBD MF MFD Accessories Before Using a Fan Axial Flow Fans AC DC AC DC DC Centrifugal Blowers Cross Flow Fans AC Thermostats: AM1-WA1 AM1-XA1 Page E-97 A filter or screen can be installed in place of the finger guard. ORIENTAL MOTOR GENERAL CATALOG 2324 E-37
Cooling Fans MU Series Slim-Line, General-Purpose s 4.69 in..98 in. thick ( 119 mm 25 mm thick) Ambient Temperature: 14 F to 14 F ( 1 C to 6 C) Operating Voltage Range: 1% Materials Frame: Die Cast Aluminum Blades: Resin Flammability Grade: V- Overheat Protection: Impedance Protected Bearings: Ball Bearings Specifications Type Standard Middle MU1225S-21 MU1225S-51 MU1225M-21 MU1225M-51 Voltage VAC Single-Phase 115 Single-Phase 22 Single-Phase 23 Single-Phase 23 Single-Phase 115 Single-Phase 22 Single-Phase 23 Single-Phase 23 Frequency Hz How to read the specifications Page E-13 Details of safety standards Page G-2 5 6 5 5 6 5 6 5 5 6 Power W 11. 9.5 1.5 12. 1. 1.5 9. 1. 12. 9.5 Current A.14.12.7.8.7.13.11.7.7.7 rmin 25 295 25 25 295 225 26 225 225 26 Max. Air Flow CFM 56.5 67.1 56.5 56.5 67.1 49.4 6 49.4 49.4 6 RSVJC m 3 min 1.6 1.9 1.6 1.6 1.9 1.4 1.7 1.4 1.4 1.7 Max. inh2o.196.176.196.196.176.129.125.129.129.125 Pa 49 44 49 49 44 32 31 32 32 31 Noise Level db(a) 36 4 36 36 4 33 37 33 33 37 Air Flow Characteristics MU1225S MU1225M [rmin] 28 24 2 7 6 5.3.25.2 5 Hz 6 Hz [rmin] 28 24 2 7 6 5.3.25.2 5 Hz 6 Hz 16 12 8 4 4 3 2 1.15.1.5 5 Hz 6 Hz 16 12 8 4 4 3 2 1.15.1.5 5 Hz 6 Hz 2 4 6 8 1 2 4 6 8 1.4.8 1.2 1.6 2. 2.4 2.8 Air Flow [m 3 min].4.8 1.2 1.6 2. 2.4 2.8 Air Flow [m 3 min] E-38 ORIENTAL MOTOR GENERAL CATALOG 2324 System Configuration E-19 Accessories E-11
Frequency Audible Noise Level (db) Measured at a distance of 3.3 feet (1 m) from the fan intake side MU1225S 6 5 4 3 2 1 6 Hz 5 Hz 31.5 63 125 25 5 1 k 2 k 4 k 8 k 16 k 13 Octave Band Dimensions Scale 14, Unit = inch (mm) Weight:.66 lb. (.3 kg) d E12 4.126.12 (14.8.3) 4.69 ( 119) 4.126.12 (14.8.3) Rotation. 169 ( 4.3) 8 Holes Connection Diagram Protective Earth(P.E.) Terminals.98.12 (3) (25).12 (3) Terminals Air Flow Protective Earth Terminal M4.31 (8) Thermostats (Sold Separately) Thermostats make it possible for fans to operate only when cooling is necessary, thereby conserving energy. Thermostats: AM1-WA1 AM1-XA1 Page E-97 Line MU1225M 6 5 4 3 2 1 31.5 63 125 25 5 1 k 2 k 4 k 8 k 16 k 13 Octave Band Accessories (Sold Separately) 6 Hz 5 Hz Panel Cut-Out Scale 14, Unit = inch (mm) 4.57 (116) 4.126 (14.8) Item Filter Screen (3.3 feet) (6.6 feet) 4.57 (116) 4.126 (14.8) Outlet side 5.35 ( 136) FG12D FL12 FS12 PCA2B PCA2D2.177 ( 4.5) 4 Holes 4.126 (14.8) 1 These products have been designed to pass tests set forth under the UL and CSA standards for equipment used in fans. They conform to the standards only when used with an O. 2 These products conform to UL standards only when used with an O, and certified by CSA and Electrical Appliance and Material Control Law. 3 These products conform to UL standards only when used with an O, and certified by CSA standards. 4.126 (14.8) Safety Standards 1 2 3 4.57 ( 116).177 ( 4.5) 4 Holes Intake side Page E-12 E-16 E-17 E-18 Cooling Fans Introduction Thermostats MRS Variable Flow MU Long Life MDE MDS MD MB MBD MF MFD Accessories Before Using a Fan Axial Flow Fans AC DC AC DC DC Centrifugal Blowers Cross Flow Fans AC A filter or screen can be installed in place of the finger guard. ORIENTAL MOTOR GENERAL CATALOG 2324 E-39
Cooling Fans MU Series Slim-Line, General-Purpose s 3.62 in..98 in. thick ( 92 mm 25 mm thick) Ambient Temperature: 14 F to 14 F ( 1 C to 6 C) Operating Voltage Range: 1% Materials Frame: Die Cast Aluminum Blades: Resin Flammability Grade: V- Overheat Protection: Impedance Protected Bearings: Ball Bearings Specifications Voltage Frequency Type VAC Hz RSVJC Max. Max. Noise Current Power Air Flow Level A rmin W CFM m 3 min inh2o Pa db(a) MU925S-21 Single-Phase 115 5 9.5.11 26 33.5.95.176 44 35 6 8..1 3 38.8 1.1.237 59 39 Standard Single-Phase 22 5 8.5.6 26 33.5.95.176 44 35 MU925S-51 Single-Phase 23 5 1.5.7 26 33.5.95.176 44 35 Single-Phase 23 6 8..6 3 38.8 1.1.237 59 39 MU925M-21 Single-Phase 115 5 9..11 23 3..85.137 34 31 6 8..1 27 35.8 1..176 44 36 Middle Three-Phase 22 5 8.5.6 23 3..85.137 34 31 MU925M-51 Three-Phase 23 5 9.5.6 23 3..85.137 34 32 Three-Phase 23 6 8..6 27 35.8 1..176 44 36 How to read the specifications Page E-13 Details of safety standards Page G-2 Air Flow Characteristics MU925S MU925M [rmin] [rmin] 35 3 25 2 15 1 5 7.25 6 5.2 4.15 3.1 2.5 1 5 Hz 6 Hz 5 Hz 6 Hz 1 2 3 4 5 35 3 25 2 15 1 5 7.25 6 5.2 4.15 3.1 2.5 1 5Hz 5 Hz 6 Hz 6 Hz 1 2 3 4 5.2.4.6.8 1. 1.2 1.4 Air Flow [m 3 min].2.4.6.8 1. 1.2 1.4 Air Flow [m 3 min] E-4 ORIENTAL MOTOR GENERAL CATALOG 2324 System Configuration E-19 Accessories E-11
Frequency Audible Noise Level (db) Measured at a distance of 3.3 feet (1 m) from the fan intake side MU925S 6 5 4 3 2 1 31.5 63 125 25 5 1 k 2 k 4 k 8 k 16 k 13 Octave Band Dimensions Scale 14, Unit = inch (mm) Weight:.59 lb. (.27 kg) d E14 3.248.12 (82.5.3).146( 3.7) 8 Holes Connection Diagram Protective Earth (P.E.) ( 51 Type Only) Terminals Thermostats (Sold Separately) Thermostats make it possible for fans to operate only when cooling is necessary, thereby conserving energy. Thermostats: AM1-WA1 AM1-XA1 Page E-97 6 Hz 5 Hz 3.62( 92).98 3.248.12.16 (25).16 (82.5.3) (4) (4) Rotation Air Flow Terminals Protective Earth Terminal M4.2 (5) (-51 Type Only) Line MU925M 6 5 4 3 2 1 6 Hz 5 Hz 31.5 63 125 25 5 1 k 2 k 4 k 8 k 16 k 13 Octave Band Panel Cut-Out Scale 14, Unit = inch (mm) 3.54 (9) 3.248 (82.5) 3.54 (9) 3.248 (82.5) 4.17 ( 16) Outlet side 3.248 (82.5) Accessories (Sold Separately) Item Filter Screen (3.3 feet) (6.6 feet) FG9D FL9 FS9 PCA2B PCA2D PCA2D2.138 ( 3.5) 4 Holes 3.248 (82.5) 3.54 ( 9) Intake side Safety Standards 1 2 3.138 ( 3.5) 4 Holes 1 These products have been designed to pass tests set forth under the UL and CSA standards for equipment used in fans. They conform to the standards only when used with an O. 2 These products conform to UL standards only when used with an O, and certified by CSA and Electrical Appliance and Material Control Law. 3 These products conform to UL standards only when used with an O, and certified by CSA standards. 3 Page E-12 E-15 E-17 E-18 Cooling Fans Introduction Thermostats MRS Variable Flow MU Long Life MDE MDS MD MB MBD MF MFD Accessories Before Using a Fan Axial Flow Fans AC DC AC DC DC Centrifugal Blowers Cross Flow Fans AC A filter or screen can be installed in place of the finger guard. ORIENTAL MOTOR GENERAL CATALOG 2324 E-41
Cooling Fans MU Series Slim-Line, General-Purpose s 3.15 in..98 in. thick ( 8 mm 25 mm thick) Ambient Temperature: 14 F to 14 F ( 1 C to 6 C) Operating Voltage Range: 1% Materials Frame: Die Cast Aluminum Blades: Resin Flammability Grade: V- Overheat Protection: Impedance Protected Bearings: Ball Bearings Specifications Voltage Frequency Type VAC Hz RSVC Max. Max. Noise Current Power Air Flow Level A rmin W CFM m 3 min inh2o Pa db(a) MU825S-23 Single-Phase 115 5 9.5.11 275 15.9.45.137 34 28 6 8..9 325 19.4.55.196 49 35 Standard Single-Phase 22 5 8.5.6 275 15.9.45.137 34 28 MU825S-53 Single-Phase 23 5 1.5.7 275 15.9.45.137 34 28 Single-Phase 23 6 8..6 325 19.4.55.196 49 35 How to read the specifications Page E-13 Details of safety standards Page G-2 Air Flow Characteristics [rmin] 35 3 25 2 15 1 5 7 6 5 4 3 2 1.3.25.2.15.1 6 Hz 5 Hz 6 Hz.5 5 Hz 5 1 15 2 25.1.2.3.4.5.6.7 Air Flow [m 3 min] Frequency Audible Noise Level (db) Measured at a distance of 3.3 feet (1 m) from the fan intake side 6 5 4 3 2 1 6 Hz 5 Hz 31.5 63 125 25 5 1 k 2 k 4 k 8 k 16 k 13 Octave Band E-42 ORIENTAL MOTOR GENERAL CATALOG 2324 System Configuration E-19 Accessories E-11
Dimensions Scale 14, Unit = inch (mm) Weight:.55 lb. (.25 kg) d E15 2.815.12 (71.5.3) 3.15 ( 8).98 2.815.12.16 (25).16 (71.5.3) (4) (4) 2 Leads 12 inch (3 mm) Length UL Style 3266, AWG 22 Connection Diagram Protective Earth (P.E.) ( 53 Type Only) Rotation Air Flow. 169 ( 4.3) 8 Holes Thermostats (Sold Separately) Thermostats make it possible for fans to operate only when cooling is necessary, thereby conserving energy. Thermostats: AM1-WA1 AM1-XA1 Page E-97 Protective Earth Terminal M4.31 (8) ( 53 Type Only) Line Panel Cut-Out Scale 14, Unit = inch (mm) 3.7 (78) 2.815 (71.5) 3.7 (78) 2.815 (71.5) 3.54 Outlet side ( 9).177 ( 4.5) 4 Holes 2.815 (71.5) 2.815 (71.5) 3.7 ( 78) Intake side Accessories (Sold Separately) Item Filter Screen FG8D FL8 FS8 Safety Standards.177 ( 4.5) 4 Holes Page E-12 E-15 E-17 These products have been designed to pass tests set forth under the UL and CSA standards for equipment used in fans. They conform to the standards only when used with an O. Cooling Fans Introduction Thermostats MRS Variable Flow MU Long Life MDE MDS MD MB MBD MF MFD Accessories Axial Flow Fans AC DC AC DC DC Centrifugal Blowers Cross Flow Fans AC Before Using a Fan ORIENTAL MOTOR GENERAL CATALOG 2324 E-43