General Machine Products 89004 Portable Powered Duct Rod Pusher - Manual (Page 28)

Page 28 of 40
General Machine Products Co., Inc.
12. TROUBLESHOOTING GUIDE
INITIAL STARTING HYDRAULIC PRESSURE AT THE POINT OF STARTING A ROD
INSTALLATION THE HYDRAULIC PRESSURE MUST BE BETWEEN 290-580 psi (20-40
BAR). IF NOT DO NOT CONTINUE, SEE SECTIONS ‘WILL NOT ACHIEVE MAX
PRESSURE’ AND ‘RUNS AT HIGHER THAN EXPECTED PRESSURE’ TO RECTIFY
PROBLEM BEFORE COMMENCING ROD INSTALLATION.
WILL NOT ACHIEVE MAX PRESSURE
a. Hydraulic control valve not open fully
b. Speed control not positioned fully
c. Faulty power pack (check performance)
d. Jacking screw not tight enough (producing belt slip)
e. Worn pads due to rod slip
f. Excessive lubrication of chains (on to pads causing belt slip)
RUNS AT HIGHER THEN EXPECTED PRESSURE
a. Chains too tight / excessive clamping force.
b. Poor lubrication
c. Seized chain links
d. Over tightening of jacking screw
e. Misalignment of sub duct clamp slider
f. Rod drum not rotating freely
g. Misalignment of entry guide
h. Poor duct, installation / friction
i. Dirt/debris in pusher housings
ROD PUSHING MACHINE STOPS SUDDENLY DURING ROD INSTALLATION
a. Max pressure achieved
b. Obstacle in duct installation
c. Power Pack out of fuel
d. Emergency button pressed
e. Damaged lead between Power Pack and Duct Rod Pusher
ENGINE DOES NOT STOP AT MAX PRESSURE
a. Emergency lead not connected
b. Electrical control panel not switched on
c. Battery low on power
d. Pressure switch unplugged
e. Fuse blown in control panel