User manual

Fuse replacement (mains fuse F1)

In case mains switch pilot lamp (3) does not illuminate after connecting the

Machinery-Tester MT204-S to mains outlet and switching on the mains

switch and neither the LC-Display (16) shows any indication, it is very likely

mains fuse (2) to be blown.

To replace the fuse proceed as follows:

1) Open the fuse holder 1 (2) above the ON/OFF switch by using an

appropriate screwdriver

2) Remove the defective fuse and replace it with a new one (T 1 A /

250 V, 5 × 20 mm)

3) Close the fuse-holder again

Fuse replacement (fuse F2 for RPE10A, ZI, RISO and HV

functions)

Internal fuse F2 (FF 12.5 A / 500 V, 6.3 × 32 mm) has blown if:

• Text "FUSE (F2) 12.5A" appears on the LC-Display in RPE10A, RISO or HV

function

• Measurement values in ZI function are very low (ZI lower than 0.05  or

IPSC higher than 4.6 kA)

• Check the fuse also if "FUSE (F2/F3)" appears on the LC-Display in RPE0.2A

or RPE10A function

To replace the fuse proceed as follows:

1) Unlock corresponding fuse holder (4) by using an appropriate

screwdriver

2) Remove the defective fuse and replace it with a new one (FF 12.5 A

/ 500 V, 6.3 × 32 mm).

3) Lock the fuse holder again.