Pump Control (Negative Flow) - Adjust
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| Illustration 1 | g00363732 |
Pump compartment (27) Setscrew (28) Locknut (29) Setscrew (30) Locknut | |
Note: Use the same procedure for both pumps. Use locknut (28) and setscrew (27) for the upper pump adjustment. Use locknut (30) and setscrew (29) for the lower pump adjustment.
- In order to adjust the upper pump, loosen locknut (28) .
- Turn setscrew (27) until the negative flow rate is adjusted to the correct specification.
Note: A clockwise adjustment of setscrew (27) and setscrew (29) decreases the flow rate. A counterclockwise adjustment increases the flow rate. A quarter turn of setscrew (27) and setscrew (29) will change the flow rate approximately 2.5 L/min (0.7 US gpm) at a system pressure of 2490 kPa (360 psi).
- Tighten locknut (28) to a torque of 12 ± 3 N·m (9 ± 2 lb ft).
- Adjust the lower pump. Use locknut (30) and setscrew (29) instead of locknut (28) and setscrew (27) to adjust the lower pump.
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