Section 9
Troubleshooting
20479300
2-2012/Rev 01
9-3
Table 9-1
S50 Troubleshooting Guide
Malfunction Indication Comments
3.
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.
4.
Hydraulic pressure but no
high pressure water
pressure
Proximity switch failure Jog the intensifier left and right
and verify that the red light
comes on at both proximity
switches.
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.
5.
No hydraulic oil pressure The high and low limit
compensators on the
hydraulic pump are blocked
with debris and are not
controlling the swashplate
Disassemble the compensators,
clean and inspect the
components following the
maintenance procedure in
Section 6, Hydraulic System.
Incorrect motor rotation Check the motor rotation.
6.
Pump shaft will not turn The hydraulic pump has
seized
Replace the hydraulic pump.
7.
Pump will not start Customer-supplied
emergency stop button is
depressed
Check all remote e-stop buttons.
Main power is disconnected Check the main power and
verify that the main power
disconnect is on.
8.
Pump quits running Electrical power has been
interrupted
Check the power supply circuit
for a tripped breaker.
Verify that power is available at
the main power source.
To Next Page
Loading...
Need help?
General
