Sea-Bird Electronics SBE 19plusV2 - Page 210

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APPLICATION NOTE NO. 75 Revised June 2007
Maintenance of SBE 5T, 5P, and 5M Pumps
This application note is intended to assist you in maintaining your pump:
• SBE 5T Titanium Submersible Pump – titanium housing (depth to 10,500 meters).
• SBE 5P Plastic Submersible Pump – plastic housing (depth to 600 meters).
Note: The SBE 5P’s operational characteristics (power requirements, flow rate, etc.) are identical to the SBE 5T.
However, the SBE 5P’s construction is similar to the SBE 5M; therefore, the maintenance procedures for the
SBE 5P are grouped with the SBE 5M.
• SBE 5M Miniature Submersible Pump – available in titanium housing (depth to 10,500 meters) or plastic housing
(depth to 600 meters).
A properly maintained pump will provide constant flow for your CTD and any pumped auxiliary sensors, resulting in
high quality data. The main symptom of a non-functioning or poorly functioning pump is bad conductivity data,
because the pump is not pulling water through the conductivity cell.
CAUTION: Do not run the pump dry. The pump is water lubricated; running it without water will damage it. If
testing your system in dry conditions, remove the Tygon tubing from the hose barb at the top of the pump head, and fill
the inside of the pump head with water. This will provide enough lubrication to prevent pump damage during testing.
The application note is organized as follows:
• Routine rinsing after recovery (applies to all pumps)
• SBE 5T -
Periodic cleaning for SBE 5T
Yearly maintenance for SBE 5T
Non-functioning or poorly functioning SBE 5T
• SBE 5M or SBE 5P -
Periodic cleaning for SBE 5M or SBE 5P
Yearly maintenance for SBE 5M or SBE 5P
Non-functioning or poorly functioning SBE 5M or SBE 5P
Sea-Bird Electronics, Inc.
1808 136th Place NE
Bellevue, WA 98005
US
A
Phone: (425) 643-9866
Fax: (425) 643-9954
E-mail: seabird@seabird.com
Web: www.seabird.com
Bulkhead
connecto
r
End cap
retaining
ring
(5T only)
Pump
head
SBE
5T
Hose
barb
Hose
barb
SBE
5M
SBE 5M with
titanium housing
SBE
5M
SBE 5M with
plastic housing
SBE
5P
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