1100 Series Nano Pump Service Manual 143
Repairing the Pump 3
Exchanging the Fan
1 Remove the pump from the stack, remove the front cover, top cover and top
foam section (see “Removing the Top Cover and Foam” on page 131).
2 Remove the EMPV. For this disconnect first:
• the capillary going to the flow sensor.
• the capillary coming from the filter.
• the waste tube.
• the connector.
3 Remove the flow sensor. For this disconnect first:
• the capillary coming from the EMPV.
• the capillary on the injection device (port 1).
• the connector.
4 Unclip the mixing chamber from its holder.
5 Remove the damper and the Z-panel. For this disconnect first:
• the mixing capillary.
• the capillary going to the mixer.
• the active inlet valve cable at the Z-panel.
• the connector (P16, P11, P20) at the main board (see Figure 22 on page
135)
6 Remove pump assembly B. For this, disconnect first:
• the capillary coming from the mixing chamber.
• the connecting tube coming from the solvent selection valve.
• the connector (P8, P21) at the main board.
• Unclip the mixing chamber from its holder
7 Disconnect the fan cable (P17) at the main board and slide the fan towards
the front and move it out of the unit.
Frequency Fan not running
Tools required Screwdriver Pozidriv #1
Wrench 1/4 inch
Parts required Fan, PN 3160-1017
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