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Neslab chiller pump makes noise, has low pressure

Applies to

 Neslab CFT33D chiller used with 1.7x Thermal Exposure Head

Description

The water circulating pump makes noise, and the pressure gauge reads low.

Causes

 Pump strainer clogged.

Solutions
  1. Turn the chiller off.
  2. Remove the chiller cover.  There are 4 screws on each side of the cover.
  3. See photo below.  Place some paper towel or a small pan under the pump strainer retaining nut.

  1. Remove the strainer retaining nut, and extract the strainer.
  2. Thoroughly clean the strainer, and replace.
  3. Turn the chiller back on, and check for proper operation.

    4. Note:  It may be necessary to repeat the procedure several times

  4. Once the chiller is working properly, replace the chiller cover.
Submitted by Rick Baggett
Date Dec. 17, 1998

See also

 Neslab CFT33D Chiller Installation and Operation 
Chiller pressure gauge doesn't register properly

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