Sealey MM18 Instruction Manual

Also see for MM18: Manual

1.1. PERSONAL PRECAUTIONS When using this multimeter, please observe all normal safety rules concerning:Protection against the dangers of electrical current.Protection of the meter against misuse. Full compliance with safety standards can only be guaranteed if used with the test leads supplied. If necessary, they mustbe replaced with genuine Sealey leads with the same electrical ratings. Failure to do so will invalidate the warranty.DO NOT use leads if damaged or if the wires are bared in any way.1.2. GENERAL SAFETY INSTRUCTIONS Familiarise yourself with the application and limitations of the multimeter as well as the potential hazards.IF IN ANY DOUBT CONSULT A QUALIFIED ELECTRICIAN. USE EXTREME CAUTION when working with high voltages. DO NOT use the meter if it is damaged. Before you use it inspect the case. Pay particular attention to the insulationsurrounding the connectors. Inspect the test leads for damaged insulation or exposed metal. Check the test leads for continuity. Replace damaged testleads before you use the meter. DO NOT use the meter if it operates abnormally. Protection may be impaired. When in doubt have the meter inspected byyour Sealey Authorised Dealer. DO NOT operate the meter where explosive gas, vapour or dust is present. DO NOT apply more than the rated voltage, as marked on the meter, between the probes or between any probe and earthground. Before use verify the meter's operation by measuring a known voltage. When measuring current, turn off circuit power before connecting the meter in the circuit. Remember to place the meter inseries with the circuit. WARNING Use caution when working with voltage above 30V ac rms, 42V peak, or 60V dc. Such voltages pose a shockhazard. When using the probes keep your fingers behind the finger guards. When making connections, connect the black test lead before you connect the red test lead. When you disconnect the testleads, disconnect the red one first. Remove the test leads from the circuit under test before you open the back cover. DO NOT operate the meter with the back cover removed or loosened. To avoid false readings, which could lead to possible electric shock or personal injury, replace the button cells as soon asthe low battery indicator ( ) appears. DO NOT touch any naked conductor with your hand or skin, to avoid electric shock, DO NOT ground yourself whilstusing the meter. When a probe is connected to a dangerous live potential, it must be noted that this potential can occur at the other probe.NOTE CAT II measurement category is for measurements performed on circuits directly connected to low voltageinstallations. (Examples are measurements on household appliances, portable tools and similar equipment.) DO NOT usethe meter for measurements within Measurement Categories III and IV. Disconnect circuit power and discharge all capacitors before testing resistance, diode or continuity. Use the proper function for your measurements. Before measuring current, check the meter's fuse and turn off power to the circuit before connecting the meter to thecircuit. Before moving the function switch or rotating the range switch, disconnect the test leads from the circuit under test. The user shall ensure that test probes are correctly selected in order to prevent danger. Probes shall be selectedto ensure that adequate barriers guard against inadvertent hand contact with live conductors under test and thatprobes have minimal exposed probe tips. Where there is a risk of the probe tip short circuiting with other liveconductors under test, it is recommended that the exposed tip length shall not exceed 4mm.NOTE:The warnings, cautions and instructions referred to in this manual cannot cover all possible conditions andsituations that may occur. It must be understood that common sense and caution are factors which cannot bebuilt into this product, but must be applied by the operator.INSTRUCTIONS FOR:POCKET MULTIMETERModel No: MM18Thank you for purchasing a Sealey product. Manufactured to a high standard this product will, if used according to these instructions andproperly maintained, give you years of trouble free performance.1. SAFETY INSTRUCTIONSIMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE THEPRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR PERSONALINJURY AND WILL INVALIDATE THE WARRANTY. PLEASE KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.Original Language Version MM18 Issue No:2(I)-09/09/14© Jack Sealey Limited1.3. ELECTRICAL SYMBOLSAlternating Current.Direct Current.Both direct and alternating current.Caution risk of danger refer to operating manualbefore use.Caution risk of electric shock.Earth (ground) terminal.Fuse.The equipment is protected throughout by doubleinsulation or reinforced insulation.

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