Figure 7.2 Showing PCB fasteners

7.2.2Replacing Fuses

1.Open the case (section 7.2.1).

2.The fuses can now be accessed. See Figure 7.3 for the location of the fuses on the power PCB.

Figure 7.3 Showing location of the fuses on power PCB

The four fuses have the following ratings:

MR850 Model Number

Supply Voltage

Fuse Type

Part Number

MR850Axx

230 V~

F1: 1 A 250 V FastBlow

999 830 001

 

 

F2: 4 A 125 V FastBlow

999 830 017

 

 

F3: 2 A 250 V FastBlow

999 830 009

 

 

F4: 2 A 250 V FastBlow

999 830 009

MR850Pxx

127 V~

F1: 1 A 250 V FastBlow

999 830 001

 

 

F2: 4 A 125 V FastBlow

999 830 017

 

 

F3: 3 A 250 V FastBlow

999 830 012

 

 

F4: 3 A 250 V FastBlow

999 830 012

36 MR850 Technical Manual * Revision J * Issued November 2005 * Ref. 185041340 (185041713 internal)