Harbor Freight Tools CENTRAL PENUMATIC 90234 - Manual (Page 12)

8. Turn the Pressure Regulator (part #70) counterclockwise to increase the amount
of compressed air to the air tool being used (from 90 PSI to 115 PSI). Turn the
Pressure Regulator
clockwise to decrease the amount of compressed air.
(See Figure F.)
9. NOTE: If it is necessary to quickly depressurize the Air Compressor, turn off the
Air Compressor by pushing DOWN on the “On/Off” Pressure Switch (part #66).
Then, pull OUT on the ring on the Pressure Relief Valve (part #67) to quickly
release stored air pressure. (See Figure D.)
10. When finished using the Air Compressor, turn it off by pushing DOWN on the
“On/Off” Pressure Switch (part #66). Unplug the Power Cord (part #64) from its
electrical outlet. Squeeze the trigger on the air tool being used to release all
stored air pressure from the system, and disconnect the air hose and air tool
from the Air Compressor. Then, open the Tank Drain Valve (part #59) to release
all remaining compressed air from the Air Tank (part #50).
(See Figure F.)
11. NOTE: The Air Compressor is equipped with an internal overload device.
Should the Air Compressor overheat while in use, the machine will automatically
shut down. If this happens, push DOWN on the “On/Off” Pressure Switch
(part #66). Wait five to ten minutes. Press the Overload Button (part #31).
Then, pull UP on the “On/Off” Pressure Switch to restart the Air Compressor.
(See Figure G.)
SKU 90234 PAGE 12
FIGURE G
OVERLOAD
BUTTON
(#31)