Operation; Maintenance Schedule - GMC GAC1500 Original Instructions Manual

Fitting the quick connector
Note: This tool is supplied with two different female airline quick connectors:
EN-6 – mainly used in the UK (Fig.I)
EQ-4 – commonly used in Europe (Fig.II)
• Please choose the connector that is compatible with the air line system you are using, and install as
outlined below:
1. Apply PTFE tape (not included) to the screw threads of the Quick Connector (10). This will help maintain
an air-tight seal
Note: Apply PTFE tape tightly and in a clockwise direction, so it does not come off when the thread is screwed
into the tool.
2. Remove the protective plug from the air inlet
3. Using a spanner (not included), screw the Quick Connector into the air inlet located at the base of the
GB
handle
4. Connect to airline, pressurise carefully and carry out a leak check (e.g. by spraying small amounts of
soapy water on to the outside of the connectors)
• Air lines fitted with matching male quick connectors will now be a push fit to the tool
Check valves and fasteners
Note: Always check the operation of the Pressure Release Valve (8) before use; its function is imperative to
the safe use of this air compressor.
• Ensure all valves and fasteners are correctly tightened/seated for operation before each use

Operation

WARNING: Always use adequate protective equipment, including eye protection, respiratory and hearing
protection, when working with this tool.
Switching on and off
1. Check that the compressor is disconnected from all air tools or air lines and that the ON/OFF Switch (6)
is depressed
2. Connect the machine to the mains power supply
3. Pull the On/Off Switch (6) upwards. This will start the compressor
4. Allow the compressor to build pressure; the tank pressure is displayed on the Pressure Gauge (7). When
the Reservoir Tank (1) pressure reaches 8bar (116psi), the motor will stop automatically
5. Press the ON/OFF Switch down to switch the compressor off

Maintenance Schedule

Description Work to be carried out
Motor oil
Air filter
Check, tighten & replace
Fittings & fasteners
Cleaning & clearance
Valve maintenance
Before each use
Check level X
Change
Inspection X
Cleaning
if necessary
adjustment
Connecting air tools
• Tools can be connected to the Quick Connector (10) using a suitable air line fitted with a corresponding
¼" bayonet type male connector
• Always ensure that air tools are in the 'off' position before connecting. Tools will be pressurised as soon
as the connections are made
• To connect an air tool, fit the air line to the tool, then push the bayonet fitting into the Quick Connector
outlet of the compressor
• Once connected, the output pressure can be adjusted. Turn the Pressure Regulator (11) clockwise
to increase pressure, and anti-clockwise to decrease pressure. The line pressure is displayed on the
Pressure Gauge (7)
• Release the air line by pulling back the outer sheath of the high pressure outlet and pulling the bayonet
fitting out. Be aware that the air line and tool will hold residual air pressure
Adjusting line pressure
• The pressure of the air supplied to the tool (line pressure) can be adjusted using the Pressure Regulator
(11). The line pressure is displayed on the Pressure Gauge (7)
• Increase the line pressure by rotating the pressure regulator clockwise. To reduce the line pressure,
rotate the Pressure Regulator anti-clockwise
Accessories
A range of accessories, including an Air Filter, Air Regulator, Air Impact Wrench, as well as a variety of spray
guns, are available from your GMC dealer. Spare parts can be purchased from your GMC dealer or online at
www.toolsparesonline.com
Maintenance
WARNING: ALWAYS wear adequate personal protective equipment, including eye protection and oil-resistant
gloves, when carrying out maintenance on this compressor. ALWAYS ensure proper ventilation.
WARNING: If oil is removed during maintenance, fill into suitable sealed containers and dispose of according
to laws and regulations.
WARNING: ALWAYS switch the compressor off and wait until all components have completely cooled, before
cleaning or carrying out any maintenance (with the exception of oil removal; refer to 'Changing the motor oil').
Note: The maintenance schedule should be adjusted according to use and environment. If the compressor is
used frequently, and/or if it is used in harsher environments, shorter maintenance intervals are required.
WARNING: Always remove the plug from the mains power supply before carrying out any maintenance/
cleaning.
• Do not attempt to perform any maintenance when the air tank is pressurised
Every 3 months/50
After 1 month/first 20 hours
hours
X
X
8
Every 6 months Every 12months/
/100 hours 300 hours
X
X
x (requires qualified technician)