Installation - Pneumatic System

1.	Mounting: When mounting the pneumatic system, leave enough space around the unit for ventilation and for access to make initial installation, periodic adjustments, and future maintenance procedures as easy as possible. To reduce vibration in the system place rubber washers or grommets on the bolts between the mounting pads and the mounting surface.
2.	Electrical: In accordance with applicable electrical codes, select the proper wire size, circuit breakers, or fuse size according to the maximum current draw of the pneumatic system being installed. Refer to rating information plate on the compressor motor. Be sure to properly ground the compressor motor and all other electrical components. Operation of the compressor may cause interference unless proper isolation or shielding is used. On 12VDC models TMD-C-271, TMD-C-284 and TMD-D-278, a solenoid which is supplied with the pneumatic system is required to control the motor. Refer to the schematic on the assembly drawing for the proper wiring.
3.	Air supply: The compressor should have adequate ventilation to provide at least 10 SCFM of clean dry air at the air intake at all times. The recommended temperature range for inlet air is 32-95 degrees Fahrenheit (0-35 degrees Celsius). The compressor should not be operated without the air filters in place.
4.	Pressure switch: Each Will-Burt pneumatic system is equipped with a pressure switch. On pneumatic systems with receivers, the pressure switch adjusts the pressure in the receiver, and the regulator is used to adjust mast operating pressure. On pneumatic systems without receivers, the pressure switch is factory preset to turn off the compressor motor when the line pressure approaches the maximum recommended operating pressure of the mast. To change pressure settings, use the following procedure: A. Remove the pressure switch cover to access the two adjusting screws. Warning: the four terminal screws are at line voltage and present a shock hazard.   B. Turn the center adjusting screw counterclockwise to decrease cut-in pressure (on) and cut-out pressure (off). C. To change the cut-out pressure without affecting the cut-in setting, turn the off-center screw clockwise to increase the setting or counterclockwise to decrease the setting. D. To check the settings, release air from the system until the compressor starts and note the pressure gauge reading when it comes on, then close the air valve and note the pressure at which the compressor shuts off.
5.	Plumbing: A length of 3/8" air line hose plus additional loose fittings is supplied with the pneumatic system. The hose can be cut to the required length at installation. A drain hose should be attached to the exhaust port of the control valve to drain condensation or oil mist which may exhaust from the mast.