Instructions / Assembly

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Table Of Contents

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| DF SERIES

INSTALLATION AND OPERATION MANUAL

Service Instructions

NOTE: All item numbers reference Page 11 image of AC and DC Pump Components.

Tools Required

• M4 Hex Driver Bit

• M3 Hex Driver Bit

• #1 Philips Driver Bit

• Power Drill or Bit Screwdriver

• Needle Nose Plier

Clean / Inspect Bypass

1. To open the bypass cover (item 23), use a #1 Philips bit/screwdriver to remove the screws and washers (Items 29).

NOTE: Bypass cover is under spring pressure and will spring open after screws are disengaged from pump housing (Item 33).

2. Once the screws and washers of the bypass are removed, carefully check the bypass O-ring (Item 30) and outlet dampener (Item 25) for

damage or debris.

3. Remove bypass spring (Item 26) from bypass cavity.

4. Using needle nose pliers, remove the bypass poppet (item 24) from bypass cavity, inspect bypass poppet and cavity for debris or damage.

5. Reverse the disassembly to return the bypass back to normal operation.

NOTE: Verify all seals have are properly seated before tightening bypass cover with bypass cover mounting hardware.

Clean / Inspect Fluid Chamber

1. To open the fluid chamber, use a M4 hex driver bit in a power drill or bit screwdriver to remove all nine of the pump housing mounting bolts (Item 34).

2. Once the bolts have been removed, lift the pump housing from the motor.

3. Inspect for debris or damage in the flap check (Item 27) and the five black check valves in Item 31.

4. To continue inspection, use a M3 hex driver bit in a power drill or bit screwdriver to remove the check valve mounting bolt (Item 32)

5. Lift check valve mounting washers (Item 28 & 32) and flap valve (Item 27) from motor. Verify small motor O-ring seal (Item 36) is free of

debris/damage and still mounted to check valve mounting bolt (Item 32).

6. Carefully check for debris or damage of flap valve (Item 27).

7. Lift check valve assembly (Item 31) from motor and verify no debris is inside the assembly. Inspect for debris or damage to any of the five

black check valves included in Item 31.

8. After debris and damage evaluation is complete, reverse the disassembly to return the check valves and pump housing back to normal operations.

NOTE: Realign the flap valve (Item 27) to cover all check valve ports of the check valve assembly (Item 31).

NOTE: Verify all seals are properly seated before tightening hardware.