B&K 1794 Operators Safety Summary, Terms in this Manual Terms AS Marked on Equipment

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OPERATORS SAFETY SUMMARY

The general safety information in this part of the summary is for both operating & servicing personnel. Specific warnings and cautions will be found throughout the manual where they apply, but may not appear in this summary.

TERMS IN THIS MANUAL :

CAUTION : Statements identify conditions or practices that could result in damage to the equipment or other property.

WARNING : Statements identify conditions or practices that could result in personal injury or loss of life.

TERMS AS MARKED ON EQUIPMENT :

CAUTION : Indicates a personal injury hazards not immediately accessible as one reads the markings,or a hazard to property, including the equipment itself.

DANGER : Indicates a personal injury hazard immediately accessible as one reads the marking.

POWER SOURCE : This product is intended to operate from a power source that does not apply more than 130V rms between the suply conductors or between either supply conductor and ground. If the Internal Tap is selected for 230V AC operation, then the input voltage should not be more than 250V rms. A protec- tive ground connections by way of the grounding conductor in the power cord is essential for safe operation.

GROUNDING THE PRODUCT : This product is grounded through the grounding conductor of the power cord. To avoid electrical shock, plug the power cord into a properly wired receptacle before connecting to the product input or output terminals. A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation.

DANGER ARISING FROM LOSS OF GROUND : Upon loss of the protective ground connection, all accessible conductive parts (including knobs and controls that may appear to be insulating) can render an electric shock.

USE THE PROPER POWER CORD :

Use only the power cord and connector specified for your product. Use only a power cord that is in good condition.

Refer cord and connector changes to qualified service personnel.

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Contents BK Precision Limited Two Year Warranty Table of Contents Remote Programming With External 5K Pot Output ON/OFF SwitchLimit Setting Section General Information DescriptionSection Specifications Section Installation Repackaging for Shipment Input TAP Selection for 230V Operation Section Operating Instructions Readjust the current limit in the remote sensing mode Reverse Current Loading Output CapacitanceReverse Voltage Loading Terms in this Manual Terms AS Marked on Equipment Operators Safety SummaryUSE the Proper Power Cord USE Care When Servicing with Power on Servicing Safety SummaryFor Qualified Service Personnel only Do not Service AloneServicing shall be done only by Qualified personnel Section Service Instruction GeneralTrouble Shooting Techniques Repairs & Maintenance Page Parts Ordering & Replacing REF. PCB no PIN noPage Page Fuse Blows Fault Finding ProcedureFuse Blows Unregulated O/P Voltage Unregulated O/P VoltageNo O/P Voltage No Output VoltageNo DPM Indication No DPM IndicationDPM not Read Unit not Take Current Unit not Take CurrentUnit Directly Goes To CC Unit Directly Goes to CCPoor Line Regulation No Current ControlPoor Line Regulation No Current ControlPoor Load Regulation Poor Load RegulationCV, CC, LED not Glow External Programming Not OK External Programming not OKRemote Sense not OK 2P2W SW Push Button Section Part List & SchematicsL1791-FP-CNT-0603 PCB Assy 1KPF/100V, DiscPS-PREG-1791-0503 PCB Assly SW1 Grey Colour CAP for Push Switch SW2 SW3DPM/01 REV 01 X PS-PWR-L1791-0703A PCB Assly PS-AUX-DC-L1791-0503 PCB AsslyBack Trough Assly Front Panel AsslyMain Chassis Assly Front Panel Layout Back Panel Layout TOP View Bottom View of Model 1790 Front Panel Control PCB of 1790 Power Module PCB of 1790 PRE Regulator / AUX. P/S PCBs 1790 Precision Corp Service InformationPrecision Corp