Flow 94i-D, Руководство пользователя

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Testing the shift module
A useful troubleshooting technique to identify whether
a problem is in the shift module or in one or both shift
sensors is to operate the intensifier with external “test”
shift sensors.
WARNING
Do not start the pump unit unless all shift
sensors are in place on ALL end bells. Starting the
intensifier pump with shift sensors removed can
result in equipment damage or injury to personnel.
When the pump is operating, the manifold assembly
can contain up to 3500 psi (241 bar) oil pressure.
NEVER start or operate the pump when any of the
manifold assembly parts are loose or removed.
Test procedure
1. Stop the pump, but do not shut down the system.
2. Disconnect the shift sensor cables at the connections
in the cable extensions, close to the intensifier, leav-
ing the shift sensors in place in their end bells.
3. Get two sensors that you know to be good and con-
nect their cables to the shift module cable
extensions. These become the test shift sensors.
4. Check that the intensifier is enabled at the press
system control panel and start the pump at low
pressure.
5. Insert the magnet end of a spare actuating plunger
into the cupped end of each of the two test sensors
in turn. The intensifier should stroke and shift each
time the magnet is inserted. The green LED on the
shift module should light up when the magnet is
inserted. The red LEDs should light up and stay lit in
turn until the opposite shift sensor switches them.
6. Shut the pump down. Remove the test shift sensors
and re-connect the intensifier shift sensors to the
shift module.
If the module does not operate as described it may
need replacing.
© Flow International Corporation
M-390 | 61
CHAPTER 5
Servicing the Pump