Master Lock MK-470 owner manual Electrical Requirements and Grounding Instructions

Warning

This pump requires the use of a Ground Fault Circuit Interrupter. To reduce risk of electric shock, connect the saw to a Ground Fault Circuit Interrupter outlet when operating the saw with the pump plugged into the 3-pole receptacle on motor. See the pump manual and informational tags enclosed separately for all pump information.

Caution

Shock Hazard. For replacement pump, use only identical pump, MK model PES-100, part# 155987.

notice Do not run the pump dry. Also be sure to disconnect and remove the water pump when cutting dry.

Electrical Requirements and Grounding Instructions

The MK-470 tile saw is wired for 120V, single phase operation, and draws 5.3 amps at 120V. This is not a large load, however if the machine is operated on any circuit that is already close to its capacity, the circuit breaker may be tripped. If this occurs, eliminate other loads from the circuit. A separate circuit protected by a 20 amp breaker is ideal. If other loads do not exist and power failure still occurs, have the circuit inspected by a qualified electrician. If a generator is used, use one rated at 3.5Kw minimum.

Warning

This tool must be grounded. In the event of a malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This tool is equipped with an electric cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances.

•Do not modify the plug provided - if it will not fit the outlet, have the proper outlet installed by a qualified electrician.

•Improper connection of the equipment - grounding conductor can result in a risk of electric shock. The conductor with the insulation having an outer surface that is green, with or without yellow stripes, is the equipment grounding conductor. If repair or replacement of the electric cord or plug is necessary, do not connect the equipment - grounding conductor to a live terminal.

•Check with a qualified electrician or service personnel if the grounding instructions are not completely understood, or if in doubt as to whether the tool is properly grounded.

•Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles that accept the tool’s plug.

•Repair or replace damaged or worn cord immediately. See Table 1 for proper extension cord gage requirements.

Warning

This tool is intended for use on a circuit that has an outlet that looks like the one illustrated in Sketch A in Figure 1. The tool has a grounding plug that looks like the plug illustrated in Sketch A in Figure 1. A temporary adapter, which looks like the adapter illustrated in Sketches B and C, may be used to connect this plug to a 2-pole receptacle as shown in Sketch B if a properly grounded outlet is not available. The temporary adapter should be used only when a properly grounded outlet is not available. The temporary adapter should be used only until a properly grounded outlet can be installed by a qualified electrician. The green-colored rigid ear, lug, and the like, extending from the adapter must be connected to a permanent ground such as a properly grounded outlet box.

Note Use of a temporary adapter is not permitted in Canada.

Additionally, the water pump requires the use of a Ground Fault Circuit Interrupter. Therefore, when using the water pump plugged into the water pump receptacle, this tool must be plugged into a properly installed and grounded Ground Fault Circuit Interrupter outlet, like the one illustrated in Sketch D in Figure 1. If a Ground Fault Circuit Interrupter outlet is not available, MK Diamond has available, as an accessory item, a plug - in Ground Fault Circuit Interrupter that may be plugged into a properly installed and grounded 3-pole outlet. See Sketch E in Figure 1.

Figure 1

Grounding methods

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