Parts Replacement 9-11
9.10 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 9-1)
• Small Flat Head Screwdriver* • Phillips 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.
Table 9-1 Replaceable Fuses
Part
Number
Qty.
Location Rating Size
Mount
Type
7204226 1 PWA, SDHC 5A, 125V 280 mil Board
7204794 8 Heater Relay Module 6.3A, 250V, SLOW 5 x 20 mm Panel
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! Always replace fuses with fuses of identical rating and size. Failure to do so may
not protect components from damage.
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