Power Meter Operation

Operator Maintenance

 

Operator Maintenance

 

This section describes how to replace the power line fuse and clean the

 

power meter. If you need additional information about replacing parts or

 

repairing the power meter, refer to the HP EPM-441A/442A Service

 

Guide.

 

To clean the power meter, disconnect it’s supply power and wipe with a

 

damp cloth only.

 

The power line fuse is located within the power meter’s fuse holder

 

assembly on the rear panel. For all voltages the power meter uses a 250 V,

 

F3.15AH, 20mm fast blow fuse with high breaking capacity (HP part

 

number 2110-0957).

 

 

Note

The power meter also has an internal fuse. If you suspect that this

 

fuse needs replaced it must be done by trained service personnel.

 

Please refer to “Returning Your Power Meter for Service”, on

 

page 2-63.

 

 

Replacing the Power Line Fuse

1.Remove the power cord from the power meter.

2.Slide the fuse holder assembly from the rear panel as shown in Figure 2-16.

3.Install the correct fuse in the “In line” position as shown in Figure 2-16. (A spare fuse can be stored in the fuse holder assembly.)

4.Replace the fuse holder assembly in the rear panel.

Figure 2-16: Replacing the Fuse

In line fuse

Spare fuse

2-56

HP EPM-442A User’s Guide