CP-20-S SERIES
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CP-20-S Centrifugal Circulator PumpInstallation, Operation, and Maintenance_ ©1999 GROSS MECHANICAL LABORATORIES, INC. ALL RIGHTS RESERVED. The Concept: CP-20-S is a submersible centrifugal pump designed for use in fresh or salt water (hot or cold) circulating systems. Construction is of bronze, stainless steel, or is non-metallic, so the pump may be used to pump nearly any non flammable, non-explosive liquid. Installation: Install the pump in a location that will provide generous air flow to aid in motor cooling. CP-20-S is not self-priming, so a flooded inlet is required. You may lay CP-20-S on its side in the bilge, running inlet and discharge hoses to and from the pump. Because of the weight of the pump, installation directly on top of a seacock is not recommended unless the pump is supported with straps or clamps. Bonding: GROCO pumps must be connected to the vessel bonding system. Use 14-gauge (or larger) stranded copper wire and a ring terminal beneath one of the bolts that holds the pump castings together to make this connection. Warning: Motorized equipment must have a separate connection to the vessel DC grounding bus in accordance with ABYC, E-11, Figure-18. DO NOT make pump bonding connection in series with non-motorized equipment such as strainers or seacocks. Plumbing: Make plumbing connections with pipe, hose, or pipe-to-hose adaptors. Double clamp hose connections and use TFE thread tape on pipe connections. The inlet is 3/4" NPT and the discharge is threaded internally 1/2" NPT, or 1" ID hose may be used. An adaptor is included for garden hose. Avoid sharp bends and sags in plumbing lines, and use full-flow fittings and hose if possible. Electrical: Proper wire size is essential for proper motor and pump performance. Refer to the wire size selection chart enclosed. The orange wire is positive (+). Make electrical connections with marine grade crimp terminals. Operation: Consider controlling operation with GROCO Pump Cycle Timer PC-10 or FPC-10 Maintenance: No regular maintenance is required. Winterization: Freezing water within will damage the pump. Close the inlet seacock and disconnect the connecting fittings or hose to drain water. For service assistance/information call 410.604.3800 and ask for Pumps Service Department. After hours, go to www.groco.net.