General Machine Products 89000 Cable Blowing Machine(Previous) - Manual (Page 48)

Page 48 of 64 General Machine Products Co., Inc.
16. TROUBLESHOOTING GUIDE
Initial starting hydraulic pressure at the point of starting a cable installation the hydrau-
lic pressure must be between 290 - 580 psi (20-40 bar). If not, do not continue. See the
below sections “Will Not Achieve Max Pressure” and “Runs At Higher Than Ex-
pected Pressure”
to rectify the problem before commencing cable installation.
WILL NOT ACHIEVE MAX PRESSURE
• Hydraulic control valve not open fully
• Speed control not positioned fully
• Faulty power pack (check performance)
• Jacking screw not tight enough (producing belt slip)
• Worn pads due to cable slip
• Excessive lubrication of chains (on to pads causing belt slip)
RUNS AT HIGHER THEN EXPECTED PRESSURE
• Chains too tight / excessive clamping force.
• Poor lubrication
• Seized chain links
• Over tightening of jacking screw
• Misalignment of air chamber slider
• Cable drum not rotating freely
• Misalignment of entry guide
• Poor duct, installation / friction
• Insufficient out-put from compressor
• Incorrect seal/collet fitted
• Dirt / debris in pusher housings
CABLE BLOWING MACHINE STOPS SUDDENLY DURING CABLE INSTALLATION
• Max pressure achieved
• Obstacle in duct installation
• Power Pack out of fuel
• Emergency button pressed
• Damaged lead between Power Pack and blowing machine
ENGINE DOES NOT STOP AT MAX PRESSURE
• Emergency lead not connected
• Electrical control panel not switched on
• Battery low on power
• Pressure switch unplugged
• Fuse blown in control panel