Technical data

51
17.1 Pressure Setting Example
18.0 SYSTEM TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE REMEDY
Unit will not turn on.
1) Power disconnected.
2) Blown fuse.
1) Check power at supply and unit, and correct.
2) Check fuses, replace as required, and determine cause of blown fuse.
Pump does not operate in
Automatic mode when CS-
1 pressure drops.
1) No power to unit.
2) Liquid level in tank low.
3) Magnetic starter overload tripped.
4) Time delay active.
5) Pump motor defective.
1) Verify power at unit terminal block.
2) Fill tank to proper height.
3) Verify and fix cause of overload. Press reset button on starter.
4) Wait 10 minutes for time delay to time out. Correct leaks in system.
5) Replace.
Pump does not operate in
Automatic mode when
system valve opens.
1) Pump operates on manifold pressure, not
system pressure. System pressure switch
setting is higher than the CS-1 pressure switch
setting.
1) Verify system pressure switch setting is correct. The CS-1 pressure switch
setting must not be adjusted higher. Adjust CS-1 switch setting lower if
approved by factory.
Failure to pump.
1) Supply container empty.
2) Incorrect valve position.
3) Pump rotation backward.
4) Insufficient head pressure to pump inlet.
5) Pump not up to speed.
6) Clogged suction line.
7) Air in suction line.
1) Connect full supply container.
2) Correct valve position per instructions.
3) Correct pump rotation.
4) Raise supply container.
5) Check voltage.
6) Inspect and clean Y-Strainer.
7) Check for air in pump suction line.
Excessive power
consumption.
1) Pump not fully broken in.
2) Mechanical damage.
1) Pump normally draws higher current during break-in period. This condition
will work itself out after several weeks. 2) Turn
pump over by hand. If there are tight spots after break-in, call Technical
Services.
Other pump-related
problems.
TROUBLESHOOTING
If other pump related problems are suspected,
call the Viking Technical Services Department at 1-877-384-5464.