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Waters

No flow on Alliance or 1525 pump when priming - WKB4227

Article number: 4227

SYMPTOMS

  • No flow coming out of the pump when priming.

ENVIRONMENT

  • Alliance HPLC System
  • 2695 Separations Module
  • 2695D Dissolution Separations Module
  • 2795 Separations Module
  • 2796 Separations Module
  • 1525 Binary HPLC Pump

CAUSE

Faulty Primary Check valve.

FIX or WORKAROUND

  1. Remove the check valve.
  2. Install a new check valve with the appropriate check valve.
  3. Prime the system and confirm that the pressure is stable.

ADDITIONAL INFORMATION

Part number for standard check valve provided in the PM kit is 700000254.

See 7.2.6 Replacing an Inlet Check Valve Cartridge in the Waters 2695 Separations Module Operator's Guide, 71500269502

See 4.4 Replacing Check Valves in the 1500 Series Pump Installation and Maintenance Guide, 71500022204

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