1100 Series Nano Pump Service Manual 141
Repairing the Pump 3
Exchanging the Damper
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 Disconnect both active inlet valve cables.
3 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.
4 Remove the flow sensor. For this disconnect first:
• the capillary coming from the EMPV.
• the capillary on the injection device (port 1).
5 Unclip the mixing chamber from its holder.
6 Remove the damper and the Z-panel. For this disconnect first:
• the restriction capillary.
• the capillary going to the mixer.
• the connector (P16, P11, P20) at the main board (see Figure 22 on page
135)
7 Unclip the mixing chamber from its holder
8 Loosen the screws of the Z-panel, fold it forward and remove the damper.
9 Re-install the Z-panel and the new damper. Reconnect the capillaries and
connectors. (P16, P11, P20) (see Figure 22 on page 135)
Frequency No pressure output or when leaking
Tools required Screwdriver Pozidriv #1
Wrench 1/4 inch
Parts required 79835-60005 Damper
Do not totally remove the Z-panel when the damper is in its place. The heavy damper may
fall down.
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