Section 9
Troubleshooting
20425626
5-2005/Rev 0
9-2
9.2 Troubleshooting Guide
Listen to the machine and observe it in operation. Learn to recognize the normal sounds and
operating conditions of the system. Carefully define the symptom of the problem. Locate the
symptom on the troubleshooting guide that most closely corresponds to the problem.
If the symptoms in the guide do not correspond to the malfunction, or if the problem is not
resolved by the recommended corrective action, contact the KMT Customer Service Department
for assistance.
S30 Troubleshooting Guide
Malfunction Indication Comments
Cooling water flow is
restricted
Check cooling water source for
proper temperature and flow
rate.
Water modulating valve is
stuck open or closed
Replace the valve.
1.
High oil temperature
Scale build up in the heat
exchanger has restricted the
flow
The heat exchanger will need
to be flushed or replaced.
Check the level gauge.
Check for hydraulic leaks.
2.
Low oil level
Check the level switch.
3.
Restricted or no cooling flow Check cooling water flow to
and from the heat exchanger
The water pressure differential
across the heat exchanger
requires a minimum of 35 psi
(2.4 bar) for flow through the
exchanger.
Replace the valve.
Water modulating valve is
stuck or out of adjustment
Adjust the valve.
Proximity switch failure Jog the intensifier left and right
and verify that the red light
comes on at both proximity
switches.
4.
Hydraulic pressure but no
high pressure water pressure
Coil failure on the directional
control valve
Check the coils on the
directional valve with a volt
meter to verify if they are good
or bad.
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