Section 10
Troubleshooting
20413005
8-2012/Rev 05
10-3
Table 10-1
SL-V Series Troubleshooting Guide
Malfunction Indication Comments
6.
High oil temperature
resulting in shutdown
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
7.
Low oil level resulting in
shutdown
Check the level gauge.
Check for hydraulic leaks.
Check the level switch.
8.
Restricted or no cooling
flow
Oil-to-Water Models
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.
Water modulating valve is
stuck or out of adjustment
Replace the valve.
Adjust the valve.
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