Campbell Hausfeld GR2100 Air Compressor Manual
These units are mobile power sources that can provide solutions for jobs offsite and in remote powerless locations. The GR3100, GR3200, and GR3300 can be used as a generator, welder, or air compressor. The GR2100, GR2200, and GR2300 can only be used as a generator and an air compressor. Powered by an air-cooled four cycle engine, this machine is designed to run at maximum RPM when there is demand for air or electric power. When there is no demand for power the unit idles down to save fuel. This unit offers protection features such as; low-oil level shutoff which provides protection for the engine; and a thermostatically protected alternator.
The air compressor provides compressed air to power pneumatic tools and operate spray guns. The GR2100 and GR3100 are equipped with twin 5 gallons air tanks. The GR2200 and GR3200 are equipped with a 30 gallon air tank. The GR2300 and GR3300 are equipped with a 2 gallon accumulator air tank, which connects to a remote tank (not provided). The pump is oil lubricated; therefore a small amount of oil carryover is present in the compressed air stream. NOTE: Applications requiring air free of oil or water should have the appropriate coalescing filter installed.
- Be sure all powered devices are shut off prior to connecting them to the unit.
- Be sure that all tools and appliances are in good repair and are properly grounded. Use devices that have three prong power cords. If an extension cord is used, be sure that it has three prongs for proper grounding.
- This unit may be used for emergency stand-by service. In such cases, a manual transfer switch must be installed between the electric utilities meter and the electrical distribution box. This switch should be installed by a licensed electrician.
- Start unit per STARTING instructions on page 9.
- Adjust the regulator knob to vary the outlet pressure according to the requirements of the tool(s) being used.
- Connect air hose(s) to outlet connector(s) and connect tool(s) to hose(s).
- An ASME safety valve in the manifold will automatically release air if the tank pressure exceeds the preset maximum.
- The discharge tube carries compressed air from the pump to the check valve. This tube becomes very hot during use. To avoid the risk of severe burns, never touch the discharge tube.
- The check valve allows air to enter the tanks, but prevents air in the tanks from flowing back into the compressor pump.
- There is a drain valve underneath the front air tank. Use this valve to drain moisture from the tanks daily to reduce the risk of corrosion. Reduce tanks pressure below 10 psi, then drain the moisture from the tanks daily to avoid tank.
- Motor HP 0.7
- Tank Capacity 1.3 gallon
- Phase Single
- Number of Cylinders 2
- Air Delivery @ 90 PSI 1.2 CFM
- Voltage 120
- Amperes 5
- Hertz (Cycles) 60
- Maximum Pressure 125 PSI
- RPM 1700
- Tank Outlet Size 1/4 in. Quick Connect
- Unit Weight 29.6 pounds
- Length 24.1 in.
- Width 14.2 in.
- Height 8.5 in.
GETTING TO KNOW YOUR COMPRESSOR
- PSI (Pounds per Square Inch) – Measurement of the pressure exerted by the force of the air. The actual PSI output is measured by a pressure gauge on the compressor.
- SCFM (Standard Cubic Feet per Minute) – Sometimes called CFM (Cubic Feet per Minute). Measurement of air volume delivered by the compressor.
- Air Delivery – A combination of PSI and SCFM. The air delivery required by a tool is stated as (number) SCFM at (number) PSI.
- Air Tank Capacity – The volume of air stored in the tank and available for immediate use. A large tank allows the intermittent use of an air tool with an air requirement higher than the compressor’s rated delivery.
- Amps or Amperage – A measure of the electrical force minus the resistance on an electrical line. This air compressor requires 15 amps for operation.
- Volts or Voltage – A measurement of the force of an electrical current.
- Cut-in / Cut-off Pressure – Specific PSI at which a compressor starts and stops while refilling the air tank.
- Regulator – The regulator controls the amount of air pressure at the hose outlet. Turning regulator knob clockwise (to the right) will increase air pressure at the outlet.
- Handle – Designed to move the compressor.
- ASME Safety Valve – This valve automatically releases air if the tank pressure exceeds the preset maximum.
- Exhaust Tube – This tube carries compressed air from the pump to the check valve. This tube becomes very hot during use. To avoid the risk of severe burns, never touch the exhaust tube.
- Check Valve – One-way valve that allows air to enter the tank, but prevents air in the tank from flowing back into the compressor pump.
- Air Outlet – A quick connect coupler designed to work in combination with a quick connect plug to quickly and easily join the compressor to an air hose.
Power Supply and Motor Specifications
To reduce the risk of electrical hazards, fire hazards or damage to the tool, use proper circuit protection.
Your tool is wired at the factory for operation using the voltage shown. Connect tool to a power line with the appropriate voltage and a 15-amp branch circuit. Use a 15-amp time delay type fuse or circuit breaker.
To reduce the risk of shock or fire, if power cord is worn or cut, or damaged in any way, have it replaced immediately.
The A-C motor used on this compressor is a permanent split capacitor non-reversible induction type, having
the following specifications. It is wired at the factory for operation on 120V AC, 60 Hz service.
- Voltage 120
- Amperes 5
- Hertz (Cycles) 60
- Phase Single
- RPM 1750
General Electrical Connections
WARNING: Risk of electric shock. Use GFCI. Use indoors only. Disconnect all connections before servicing. Use identical replacement parts. Servicing must be performed by a licensed, qualified electrician.
In the event of a malfunction or breakdown, grounding provides a path of least resistance for electrical current to reduce the risk of electric shock. This compressor is equipped with an electric cord having an equipment-grounding conductor and a grounding plug, as shown. The plug must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances.
Improper connection of the equipment-grounding conductor can result in a risk of electric shock. The conductor with 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.
If the grounding instructions are not completely understood, or if you are in doubt as to whether the compressor is properly grounded check with a qualified electrician or service personnel.
In order to maintain efficient operation of the compressor system, check the air filter, oil level and gasoline level before each use. The ASME safety valve should also be checked weekly. Pull ring on safety valve and allow the ring to snap back to normal position. This valve automatically releases air if the tank pressure exceeds the preset maximum. If air leaks after the ring has been released, or the valve is stuck and cannot be actuated by the ring, the ASME safety valve must be replaced.
PUMP DRIVE BELT
Belt stretch is a result of normal use. When properly adjusted, the belt deflects about 1/2 inch with five pounds of force applied midway between the engine pulley and pump pulley. To adjust pump belt tension:
- Remove belt guards.
- Loosen the four fasteners holding the pump to the baseplate.
- Shift the pump in the proper direction using the adjustment screw below the pump on the frame. The belt must be properly aligned when adjustment is made.
- To align belt, lay a straight edge against the face of the pump pulley, touching the rim at two places.
- Adjust engine pulley so that the belt runs parallel to the straight edge.
- Tighten four fasteners holding the pump to the baseplate.
- Recheck tension and alignment. If correct, reinstall belt guards.
- Check and tighten all bolts, fittings, etc., before operating compressor.
- Operate compressor in a ventilated area so that compressor may be properly cooled.
- Compressor should be located where it can be directly plugged into an outlet. Do not use extension cords with this unit.
- To avoid loss of power and overheating, it is better to use additional air hose instead of extension cords to reach work area.
Before Each Start-up Operating Procedure
- Turn regulator knob fully counter clockwise (to the left) to close air flow.
- Connect air hose to outlet of regulator.
- Turn ON/OFF Switch to OFF position.
- Plug in power cord.
- Turn ON/OFF Switch to ON position and let compressor run until it reaches automatic shutoff pressure.
- Attach tire chuck or tool to end of hose.
- Adjust regulator to proper pressure for tool or tire. Operate tool per instructions.
As air is depleted from the tank by use of a tire chuck, tool, etc., the compressor will restart automatically at its preset “cut-in” pressure. When a tool is being used continuously, the compressor will cycle on and off automatically.
- Turn switch to OFF position, unplug power cord and drain tank.
ALTERNATOR DRIVE BELT
The alternator uses a multi-V drive belt transmitting a significant amount of power. Belt tension is critical to belt life. New belts will stretch after installation and use. When properly adjusted, the belt deflects 1/4 inch with firm pressure applied midway between the engine pulley and the alternator pulley. To adjust alternator belt tension:
- Remove belt guard.
- Loosen the 4 bolts holding the engine to the base plate.
- Use the adjustment screw located below the engine on the frame to obtain the proper tension. Make sure the pump belt is not over tightened. The belt must be properly aligned when the adjustment is made.
- To align belt, lay a straight edge against the face of the alternator pulley, touching the rim at two places. The straight edge should be parallel with the belt.
- Adjust alternator or engine pulley so that the belt runs parallel to the straight edge.
- The pulleys are attached to the shafts using tapered bushings. The two set-screws must be removed and one reinserted into the hole with threads on the inner half. Tighten this screw to press the pulley and bushing apart.
- Once the bushing is moved to the correct position, move the two set-screws back to their original locations in the holes with threads on the outer half and tighten to 175 in-lbs.
- Recheck tension and alignment. If correct, reinstall belt guard.
If the unit is used infrequently, starting difficulty may occur. To help prevent this, the engine should be run for approximately 30 minutes per week.
- If the unit is not to be used for extended periods of time, the following pre-storage procedures should be performed: 1. Make sure engine oil is filled to the proper level.
- Drain moisture from air tanks.
- Drain all fuel from the tank, lines, carburetor and fuel valve.
- Remove the spark plug, and pour approximately one teaspoon of oil into the spark plug hole.
- Pull the starter cord several times to spread the oil throughout the cylinder.
- Slowly pull the starter cord, until resistance is felt. This indicates that the piston is moving upward on the compression cycle, and the intake and exhaust valves are closed. (The piston pushes a small amount of air from the spark plug hole on compression.)
Use of fuel stabilizers or anti-gumming agents in the fuel system can help prevent the build up of gum and varnish. Whenever the unit is stored, be sure that the fuel shut-off valve is in the closed position. Refer to the engine manual that accompanies this unit for instructions regarding maintenance of engine components.
This line of welding machines utilizes a process known as Shielded Metal-Arc Welding (SMAW). This process is used to bond metals by heating them with an electric arc created between the electrode and the work piece. Electrodes used for shielded metal arc welding have two parts. The inner core is a metal rod or wire that should be similar in composition to the base metal. The outer coating is called flux. Various types of flux exist. Each coating is used for a particular welding situation.
While the metal is molten, it can be contaminated by elements in the air. This contamination could weaken the weld. The flux coating creates a protective barrier called slag that protects the molten metal from contaminants. When current (amperage) flows through the circuit to the electrode, an arc is formed between the end of the electrode and the workpiece. The arc melts the electrode and the workpiece. The melted metal of the electrode flows into the molten crater and forms a bond with the workpiece as shown in Figure 4. NOTE: Discontinue using and discard electrodes that burn down to 1 to 2 inches from the electrode holder.