Manual

Page 8 of 64 General Machine Products Co., Inc.
2. CRITICAL POINTS THAT DRAMATICALLY AFFECT THE
OPERATION OF THE CABLE BLOWING MACHINE
▪ One (1) turn on the cable clamping screw
▪ Tractor drive to be closed at all times when cable is installed into machine.
▪ Air Chamber height adjustment correctly set.
▪ Cable infeed bracket height adjustment correctly set.
▪ Cord seals in air chamber correctly fitted to provide good sealing.
▪ Correct cable seals fitted.
▪ Sub-duct fully connected and pressure tested.
▪ Sub-duct cable exit retaining device fitted.
▪ Compressor capacity 175 psi (12 bar) and suitable for size of sub-duct being used.
▪ Cable drum must be located directly behind and in line with the blowing machine.
▪ Air chamber, tractor drive belts/chains, housing frames and cable guide intake assembly
must be clean and free from debris, sludge, dirt, water and lubricant, each time the blowing
machine is used.
▪ The cable must be hand guided into the blowing machine through a dry clean cloth by the
operator wearing work gloves. This will remove any dirt, debris and water on the cable.
▪ Ensure the compressed air supply is not applied to the cable until approximately 650 feet
(200 meters) of cable have been installed or the hydraulic pressure begins to rise.
▪ The hydraulic pressure should be between 290 - 580 psi (20 - 40 bar) at the start of a blow-
ing installation. If greater do not proceed. Check cable clamping screw setting, sub-duct,
cable. Cable seals, cable collet sizes, air chamber/infeed guide height setting. Rectify be-
fore recommencing the installation.
▪ Lubricate the drive chains before use with recommended lubricant.
▪ Do not repeatedly press the on/off button on the length/speed readout as this may result in
irrelevant digits being displayed or may alter the program.
▪ Always fit the hydraulic hose dust caps when the hose is not in use. Clean and check the
quick release couplings before use.