Section 9
Troubleshooting
20479300
2-2012/Rev 01
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.
Table 9-1
S50 Troubleshooting Guide
Malfunction Indication Comments
1.
High oil temperature
Oil-to-Water Models
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.
Scale build up in the heat
exchanger has restricted the
flow
The heat exchanger will need to
be flushed or replaced.
Oil-to-Air Models
Air cooler temperature switch
is not operating properly
Replace the switch.
No power to cooler fan motor Check power supply to fan
motor.
Restricted air flow to cooler
Ambient temperature is
greater than 100º F
Restricted oil flow to, from or
inside the oil cooler
2.
Low oil level Check the level gauge.
Check for hydraulic leaks.
Check the level switch.
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