DeVillbiss Air Power Company MG3-OLPORT-3A Grounding Instructions, Voltage and Circuit Protection

Voltage and Circuit Protection

Refer to your Parts Manual for voltage and circuit protection requirements of your compressor. Use only a fuse or circuit breaker that is the same rating as the branch circuit the air compressor is operated on. If the compressor is connected to a circuit protected by fuses, use only dual element time delay fuses, as noted in the Parts Manual.

Certain air compressors can be converted from 120V to 240V operation. When converting an air compressor to 240V operation, the attached three-prong 120V cord assembly must be replaced with a three-pronged 240V cord assembly that can be purchased through an Authorized Warranty Service Center. To locate an Authorized Warranty Service Center nearest you, call us at 1-800-888-2468, Ext. 2, then 2.

Some models have a dual voltage motor, 120 and 240 volt. They are wired for 120 volt but can be converted to 240 volt operation. Instructions for connecting the motor for operation at 240 volt can be found printed on the label attached to the side of the motor.

Certain air compressor models can be operated on a 15 amp circuit if:

1.Voltage supply to circuit is normal.

2.Circuit is not used to supply any other electrical needs (lights, appliances, etc.)

3.Extension cords comply with specifications in this manual.

4.Circuit is equipped with a 15 amp circuit breaker or 15 amp time delay fuse.

Extension Cords

To avoid voltage drop and power loss to the motor, and to prevent overheating, use extra air hose instead of an exten- sion cord.

If an extension cord must be used:

•use only a 3-wire extension cord that has a 3-blade ground- ing plug and a 3-slot receptacle that will accept the plug on the extension cord.

•make sure the extension cord is in good condition.

•the extension cord should be no longer than 50 feet.

•the minimum wire size is 12 gauge (AWG). (Wire size in- creases as gauge number decreases. 10 AWG and 8 AWG may also be used. DO NOT USE 14 AWG or 16 AWG.)

Lubrication and Oil

Multi-Viscosity motor oils, like 10W 30, should not be used in an air compressor. They leave carbon depos- its on critical components, thus reducing perfor- mance and compressor life. Use air compressor oil only.

Compressorsareshippedwithoutoil. Asmallamount of oil may be present in the pump upon receipt of the air compressor. This is due to plant testing and does not mean that the pump contains oil. Do not attempt to operate this air compressor without first adding oil to the crankcase. Serious damage can result from even limited operation unless filled with oil and bro- ken in correctly. Make sure to closely follow initial start-up procedures.

Place unit on a level surface. Remove oil fill plug and slowly add a compressor oil such as Castrol Heavy Duty 30 weight until it is even with the top of the oil fill hole. (It must not be allowed to be lower than 3/8" -- 6 threads down -- from the top at any time.) When filling the crankcase, the oil flows very slowly into the pump. If the oil is added too quickly, it will overflow and appear to be full. Crankcase oil capacity is 16 fluid ounces. Replace oil fill plug.

NOTE

Drain and refill the compressor pump crank- case after the first 100 hours of operation.

GROUNDING INSTRUCTIONS

RISK OF ELECTRICAL SHOCK! In the event of a short circuit, grounding reduces the risk of shock by providing an escape wire for the electric current. This air compressor must be properly grounded.

The air compressor is equipped with a cord having a ground- ing wire with an appropriate grounding plug. The plug must be used with an outlet that has been installed and grounded in accordance with all local codes and ordinances. The outlet must have the same configuration as the plug. See illustra- tion. DO NOT USE AN ADAPTER.

Inspect the plug and cord before each use. Do not use if there are signs of damage.

IMPROPER GROUNDING CAN RESULT IN ELEC- TRICAL SHOCK.

Do not modify the plug that has been provided. If it does not fit the available outlet, the correct outlet should be installed by a qualified electrician.

If repairing or replacing cord or plug, the grounding wire must be kept separate from the current-carrying wires. Never connect the grounding wire to a flat blade plug terminal. The grounding wire has insulation with an outer surface that is green - with or without yellow stripes.

If these grounding instructions are not completely under- stood, or if in doubt as to whether the compressor is properly grounded, have the installation checked by a qualified elec- trician.

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