Walker Magnetics IMI Smart-D Series, Operation Manual

800-WMAGNET

15 of 33

5 INSPECTION & MAINTENANCE

5.1 Daily Inspection

• 

Check the physical condition of the power cords, indicating lamps, switches, and the control enclosure. If any 

deficiencies are observed, contact your supervisor or O.S. Walker.

• 

Check the integrity of the enclosure by inspecting for dust, debris, and fluid. Make necessary repairs.

• 

Keep the outside of the enclosure free of dust and debris.

5.2 Having a Problem with your Chuck Control?

Problem

Probable Cause

Solution

1.  All the remote unit 

lights are flashing.

The load is drawing excessive 

current and the control unit has 

protected itself by disabling all 

operating modes.

BEFORE PROCEEDING, DE-ENERGIZE THE 

CONTROL UNIT.

a)  Verify the chuck power rating does not exceed the control’s 

power rating.

b)  Disconnect the chuck from the control unit and verify that 

the chuck’s coil windings are not shorted.

c)  Repair/replace where required.
d)  With the load disconnected, re-energize equipment 

and cycle through all operating modes, verifying proper 

operation.

e)  Repeat step d. with the load reconnected.
f)  Having successfully completed the above and unit does not 

function properly, contact O.S. Walker, Inc.

2.  None of the control 

unit lights are 

illuminated and it 

does not respond 

to any operating 

mode

Input voltage is too low or wired 

incorrectly. Remote unit is not 

properly wired.

a)  Verify the input voltage to the control unit (see Installation 

section 3).

BEFORE PROCEEDING, DE-ENERGIZE THE 

CONTROL UNIT.

b)  Verify that all fuses are good (see Standard Interface 

Diagram section 5.3 for location). Use only exact 

replacement fuses to avoid damaging unit or causing a 

safety hazard.

c)  Verify the wiring between the control unit and the remote 

unit (see Standard Interface Diagram section 5.3).

d)  Having successfully completed the above and the unit does 

not function properly, contact O.S. Walker, Inc.

3.  The fuse in the 

control unit blows 

when any of the 

control modes are 

selected.

Excessive current draw is 

causing fuse to blow before 

electronic protective circuits 

have time to react.

BEFORE PROCEEDING, DE-ENERGIZE THE 

CONTROL UNIT.

a)  Visually inspect chuck cable and connections for pinches or 

other damage.

b)  Check chuck cable and connections for shorts with 

ohmmeter.

c)  Replace any questionable equipment.
d)  Use only exact replacement fuses to avoid damaging the 

unit or causing a safety hazard.

e)  Re-energize equipment and cycle through all operating 

modes, verifying proper operation, with the load 

disconnected.

f)  Repeat step e. with the load connected.
g)  Having successfully completed the above and the unit does 

not function properly, contact O.S. Walker, Inc.