Secondary Rectifier; Cooling Fans; Safety Tests - Kemppi Master S 400 Service Manual

Service manual Master S 400 and 500

4.1.2. Secondary rectifier

Output 1
Output 2
Output side is
also in diode
botton and in
heat sink as well
Use DMM diode function to measure both branches. Conductive stage is 0,25-0,45VDC.

4.1.3. Cooling fans

Cooling fans get the power from the +24VDC line. Voltages can be measured in the X17 connector (Fan1
X17-1 +24VDC and X17-2 GND, Fan2 X18-1 +24VDC and X18-2 GND).
The cooling fans are installed so that the air flows from the back to the left side of the chassis. Air comes
out through the front plate grill. Air deflector must be installed for proper cooling.

4.1.4. Safety tests

Safety tests are made normally. See the separate document for safety tests in Kemppi Channel.
17
Kemppi Oy
Version 1.1
Input 1
Input 2
5.9.2014