SH & 2SH STAND OPERATING & SERVICE MANUAL BUNN-O-MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 To obtain the Illustrated Parts Catalog, visit the Bunn-O-Matic website, at www.bunn.com. This is absolutely FREE, and the quickest way to obtain the catalog. Contact Bunn-O-Matic Corporation at 1-800-286-6070 to obtain a paper copy of the required Illustrated Parts Catalog mailed via U.S. Postal Service. 28342.
WARRANTY Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from defects in material and workmanship existing at the time of manufacture and appearing within one year from the date of installation. In addition: 1.) Bunn warrants electronic circuit and/or control boards to be commercially free from defects in material and workmanship for two years from the date of installation. 2.
ELECTRICAL REQUIREMENTS The stands have an attached cordset and requires 2-wire grounded service rated 120 volts ac, single phase, 90 watts total for the 1SH, 180 watts total for the 2SH, or 2-wire grounded service rated 230 volts ac, single phase, 90 watts total for the 1SH, 180 watts total for the 2SH. CLEANING The use of a damp cloth rinsed in any mild, nonabrasive, liquid detergent is recommended for cleaning all surfaces on Bunn-O-Matic equipment.
SERVICE This section provides procedures for testing and replacing various major components used in these stands should service become necessary. Refer to Troubleshooting for assistance in determining the cause of any problem. WARNING - Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel.
SERVICE (cont.) RECEPTACLE ASSEMBLY (SPRING CONTACT) Test Procedures 1. Disconnect the stand from the power source. 2. Remove the wires from the circuit breaker. 3. Check for continuity between the circuit breaker terminals. Continuity must be present between the terminals. If continuity is present as described the circuit breaker is functioning properly.
SERVICE (cont.) RECTIFIER RECTIFIERS (cont.) Removal and Replacement: 1 Disconnect the wires from the rectifier. 2. Remove the #6-32 truss head screw securing the rectifier to the stand housing. 3. Remove the rectifier and discard. 4. Install new rectifier in the stand housing and secure with a #6-32 truss head screw. 5. Refer to Fig 7 and reconnect the wires. + C A C A FIG. 6 RECTIFIER FIG. 7 RECTIFIER TERMINALS P1403.
SERVICE (cont.) TRANSFORMER FIG. 8 TRANSFORMER P1403.40 Location: The transformer(s) is located in the stand housing on the base plate. Test Procedures: 1. Disconnect the stand from the power source. 2. Disconnect the black wire from terminal #5 and the white or red wire from terminal # 6. 3. Check the voltage across the black and white or red wire with a voltmeter. Connect the stand to the power supply. The indication must be: a.) 120 volts ac for two wire 120 volt models. b.
SERVICE (cont.) TRANSFORMER (cont.
N GRN L1 SCHEMATIC WIRING DIAGRAM 1 SH STAND BLK 1 WHI 2 TRANSFORMER 12 BLU/BLK 4 AMP BLU/BLK 24VDC BLK – RECT + AC 7 BLU/BLK + – AC 6 + Front view of Server Contacts 5 120 VOLTS AC, 2 WIRE SINGLE PHASE – BLU/BLK RED 27789.
L2 GRN/YEL L1 SCHEMATIC WIRING DIAGRAM 1 SH STAND, 230V CE BRN 1 BLU 2 230 VOLTS AC, 2 WIRE SINGLE PHASE TRANSFORMER – + Front view of Server Contacts 12 BLU/BLK 11 BLK 5 8 6 7 4 AMP BLU/BLK 24VDC AC – RECT + AC RESETTABLE FUSE BLU/BLK + – BLK BLU/BLK RED 27789.