Replacing Fuses; Fuse Mounting; Replacement Fuses; Board-Mounted Fuses - Nordson Asymtek Spectrum Series Installation, Operation & Maintenance Manual

9.10 Replacing Fuses

Use the following procedures to remove and replace a fuse.
CAUTION!
Tools and Materials Needed
•
ESD Grounding Strap
•
Small Flat Head Screwdriver*
*In the Spectrum Tools and Spares Kit (P/N 7204804) included with the dispensing system.

9.10.1 Fuse Mounting

This subsection describes the replacement of glass fuses mounted in the following manner:
•

Board-Mounted Fuses

•
Panel-Mounted Fuses

9.10.2 Replacement Fuses

There are approximately nine (9) replaceable fuses (see Table 9-1) on the standard Spectrum S-920 Series
Dispensing System. This number may vary depending on system configuration. All fuse locations are
clearly labeled.
Part
Qty.
Number
7204226 1
7204794 8
9.10.3 Board-Mounted Fuses
This circuit board fuse is mounted in a holder on the Single Dispense Head Controller PWA (SDHC)
located in the back of the dispensing system. The fuse protects the SDHC from damage caused by
electrical overloads from +24V supplied circuits. See Figure 9-6.
CAUTION!
Parts Replacement
Always replace fuses with fuses of identical rating and size. Failure to do so may
not protect components from damage.

Table 9-1 Replaceable Fuses

Location
PWA, SDHC
Heater Relay Module
Always replace fuses with fuses of identical rating and size. Failure to do so may
not protect components from damage.
•
Replacement Fuse (see Table 9-1)
•
Phillips Screwdriver*
Rating
5A, 125V 280 mil
6.3A, 250V, SLOW 5 x 20 mm
Mount
Size
Type
Board
Panel
9-11