600E pump is not delivering solvent - WKB55864

SYMPTOMS

• Indicator rods on the pump heads do not move

• Fan on the back of the pump does not move when the unit is turned on

• When a gradient is programmed on the 600 Controller, the gradient proportioning valve in the pump is heard functioning

• Sparging works

ENVIRONMENT

• Modular LC
• 600E pump

CAUSE

Bad pump power fuse

FIX or WORKAROUND

Replace FUSE,6A,125V,5X20MM FAST-ACTING UL (WAT162-23), which is located on the rear panel of the Waters 600 pump controller, as shown below.

ADDITIONAL INFORMATION

Refer to the Waters 600E Multisolvent Delivery System User’s Guide.