2
3. Supply power:
• Low voltage pump (pump with LV in the serial number) -
Supply 6 volts DC power to the bulkhead connector or
directly to the PCB (P8 is positive, P19 or P18 is common,
drawing 41250A).
• Normal voltage pump - Supply 12 volts to the
bulkhead connector or directly to the PCB (P8 is positive,
P19 or P18 is common, drawing 41250A).
4. A 2K ohm potentiometer (R11, drawing 41250A) is located on the
back side of the board. Adjust the potentiometer to obtain the frequency corresponding to the desired speed
(Frequency * 30 = rpm):
• Pittman 18.2Ω motor (P/N 3711B113-R1) - Set jumper position P15 to P17 (1300 rpm) and P12 to P13
(1300 rpm), and adjust the speed as desired, up to the nominal maximum of 2000 rpm.
• Pittman 7.4Ω motor (P/N 3711B112-R1) - Set jumper position P15 to P16 (3000 rpm) and P14 to P13
(3000 rpm), and adjust the speed as desired, up to the nominal maximum of 4500 rpm.
To adjust speed below approximately 2200 rpm, set jumper position P15 to P17 (1300 rpm) and P12 to P13
(1300 rpm), and adjust speed using the potentiometer.
• Pittman 3.55Ω motor (P/N 3711B112-R2) - Set jumper position P15 to P16 (3000 rpm) and P14 to P13
(3000 rpm), and adjust the speed as desired, up to the nominal maximum of 4500 rpm.
To adjust speed below approximately 2200 rpm, set jumper position P15 to P17 (1300 rpm) and P12 to P13
(1300 rpm), and adjust speed using the potentiometer.
5. Disconnect the frequency counter and the power supply.
6. Reinstall the electronics in the housing:
• SBE 5T Titanium Pump –
A. Inspect the connector end cap o-ring and the mating surface in the housing for dirt, nicks, and cuts.
Clean as necessary. If the o-ring or mating surface is damaged, return the pump to Sea-Bird for repairs.
Note: Sea-Bird recommends that connector end cap o-ring replacement be performed at the factory,
because the pump’s physical configuration makes customer-replacement of this o-ring difficult to
perform without special tools.
B. Apply a light coat of o-ring lubricant (Parker Super O Lube) to the o-ring and mating surfaces. Gently
place a new desiccant bag (PN 30558 – 1 gram) on the electronics (see Application Note 71 for
desiccant use and regeneration). Reinstall the electronics in the housing, until the o-ring has fully
seated. Reinstall the retaining ring on the connector end cap.
• SBE 5P Plastic Pump -
A. Inspect the connector end cap o-ring and the mating surface in the housing for dirt, nicks, and cuts.
Clean and/or replace o-rings as necessary.
B. Apply a light coat of o-ring lubricant (Parker Super O Lube) to the o-ring and mating surfaces. Gently
place a new desiccant bag (PN 30558 – 1 gram) on the electronics (see Application Note 71
for
desiccant use and regeneration). Reinstall the electronics in the housing. Reinstall the end cap in the
housing, carefully aligning the end cap with the housing and pushing hard on the end cap to seat the
first o-ring in the housing (only 1 o-ring should now be visible). CAUTION: If you are not careful,
you may pinch the o-ring which may allow water to enter the housing, damaging the electronics.
C. Reinstall the pump head on the end cap.
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