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APPLICATION NOTE NO. 40 Revised June 2007
SBE 5T and SBE 5P PUMP SPEED ADJUSTMENT
Equipment: DC power supply Drawings: 31441B (schematic)
Frequency counter 41250A (assembly)
The pump housing must be disassembled to adjust the pump speed. The SBE 5P and 5T electronics are the same, but
separate instructions for removing and reinstalling the electronics in the housing are provided for each pump, because
of differences in the mechanical details.
1. Remove the electronics from the housing:
• SBE 5T Titanium Pump –
A. Unscrew the white plastic end cap retainer ring.
B. Install a 2-pin dummy plug with locking sleeve over the bulkhead connector to provide a good grip
and protect the connector pins. Rotate the end cap back and forth while carefully pulling the end cap
away from the housing. Pull the end cap and attached electronics out of the housing.
• SBE 5P Plastic Pump -
A. Unscrew the pump head from the housing.
B. Pull out the end cap from the housing.
C. Pull out the electronics from the housing. Note that the electronics are wired to the bulkhead connector
inside the housing.
2. Connect the positive lead of your frequency counter to the yellow test post (T1) (drawing 41250A). Connect the
frequency counter ground (negative) to the power supply ground (negative).
Sea-Bird Electronics, Inc.
1808 136th Place NE
Bellevue, WA 98005
US
Phone: (425) 643-9866
Fax: (425) 643-9954
E-mail: seabird@seabird.com
Web: www.seabird.com
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