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NOTE! To the installer: Please make sure you provide this manual to the owner of the equip ment or to the responsible 

party who maintains the system.

D2C20 SERIES

CENTRIFUGAL GRINDER PUMP

SERVICE MANUAL AND PARTS LIST

D2C20-21 Single Phase and D2C20-23 Three Phase

Part # 23833A595  |  © 2017 Pentair plc  |  02/28/17 

Summary of Contents for DELTA ENVIRONMENTAL D2C20 Series

Page 1: ...this manual to the owner of the equip ment or to the responsible party who maintains the system D2C20 SERIES CENTRIFUGAL GRINDER PUMP SERVICE MANUAL AND PARTS LIST D2C20 21 Single Phase and D2C20 23 T...

Page 2: ...cool for 30 minutes after shutdown before handling it Submersible grinder pumps are not approved for use in swimming pools recreational water installations decorative fountains or any installation whe...

Page 3: ...f Pumps Model D2C20 21 is UL and CSA approved Level Sensing Controls Intrinsically safe type float controls are recommended for all applications An intrinsically safe control panel relay will limit th...

Page 4: ...ve Lift pump until sealing flange is open to vent off trapped air Lower pump open discharge valve and start the pump again CAUTION Positive displacement pump is designed to operate at minimum 5 GPM ca...

Page 5: ...00 Housing w Stator 1 See Chart Rotor Only 1 See Chart Ref No Part No Description Req d Number 25 Bearing Lower 1 08565A018 26 Gasket 5 1 2 I D x 1 8 2 05014A171 27 Housing Upper Seal 1 24328D000 28 F...

Page 6: ...NEL DON T RELY ON OPENING CIRCUIT BREAKER ONLY Pump has two oil filled chambers 1 the motor and ball bearings and 2 the seal chamber for long life and best heat transfer The lower seal above the pump...

Page 7: ...om basin Red light comes on at control box PROBABLE CAUSE 1 Pump impeller may be air locked this occasionally occurs on a new installation Start and stop pump several times to purge air 2 Run addition...

Page 8: ...en with control box before pulling pump 2 If this condition happens after an electrical storm motor or control box may be damaged by lightning 3 Resistance reading of the motor with lead wires disconn...

Page 9: ...ON OPENING CIRCUIT BREAKER ONLY DISASSEMBLY OF SHREDDING RING AND GRINDER IMPELLER 1 Remove three screws from grinder ring flange Grinder ring is pressed into flange for easy removal See Fig 1 2 Threa...

Page 10: ...h on impeller and screw up against shoulder Now pump can be reassembled See Fig 5 8 Clean all threads with wire brush and file smooth any threads that may be nicked 9 Use Never Seeze or other graphite...

Page 11: ...23833A595 11 MOTOR WIRING DIAGRAM...

Page 12: ...23833A595 12 PUMP DIMENSION PERFORMANCE CURVE...

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Page 16: ...in the unit in accordance with the printed instructions provided b to failures resulting from abuse accident or negligence c to normal maintenance services and parts used in connection with such servi...

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