Nordson Spectrum II S2-900 C Series, Installation, Operation And Maintenance Manual, Page: 211 / 262

Parts Replacement 8-11
8.13 Replacing Fuses
Use the following procedures to remove and replace a fuse.
CAUTION!
Always replace fuses with fuses of identical rating and size. Failure to do so may
not protect components from damage.
Tools and Materials Needed
•
ESD Grounding Strap
•
Replacement Fuse (see Table 8-1)
•
Small Flat Head Screwdriver*
•
Phillips Screwdriver*
*In the Spectrum Tools and Spares Kit (P/N 7212877) included with the
dispensing system.
8.13.1 Fuse Mounting
This subsection describes the replacement of glass fuses mounted in the following manner:
•
Board-Mounted Fuses
•
Panel-Mounted Fuses
8.13.2 Replacement Fuses
There are approximately ten (10) replaceable fuses (See Table 8-1) on the standard S2-900 Series
Dispensing System. This number may vary depending on system configuration. All fuse locations are
clearly labeled.
Table 8-1 Replaceable Fuses
Part
Number
Qty . Location Rating Size
Mount
Type
7204226 2
Main PWA (1)
PWA, PDHC (1)
5A, 125V 280 mil Board
7204794 8 Heater Relay Module 6.3A, 250V, SLOW 5 x 20 mm Panel
8.13.3 Board-Mounted Fuses
This circuit board fuse is mounted in a holder on the Main PWA and Piezo Dispense Head Controller
(PDHC) located in the back of the dispensing system. The fuse protects the PDHC from damage caused
by electrical overloads from +24V supplied circuits (Figure 8-10).