Page 3 - Raritan Macerator Pump Owners Manual L552-0619

PLUMBING

Plumbing Connections
FIG 1
Pump should be mounted as near as possible to tank to Installing on threaded flange
minimize dry run. Pump is self-priming to a five-foot
lift when impeller is wet, four foot lift when impel-
ler is dry. Pump is more efficient if mounted near the
holding tank.
INLET: For model 53100; Always install pump with
a shut-off valve between pump and holding tank.
Model 53101 includes an integral wastewater valve. INSTALLATION
HOSE: Use 1-1/2” ID [non-collapsible vacuum rated]
hose on inlet [suction] side. Use stainless steel hose FIG 2
clamps on all sanitation connections.
FLANGE: For model 53100: To mount to 1-1/2”
female flange, inlet barb must be cut off just before
threads. Seal threads and hand tighten. For model
53101: Use 1 1/2" threaded nipple between FPT
flange and waste valve . Use thread sealant to tighten
joints.
WARNING: Any air leak on inlet side can cause
pump to run dry and can damage impeller and impel-
ler housing. Check all inlet side connections, even
those on deck plates. All runs should be smooth with
no kinks or sharp angles.
OUTLET: Use 1” minimum ID hose on discharge
side of pump. Install a 1" shut-off valve between
pump quick disconnect and hose. Connect to thru-hull Quick disconnect
fitting above highest heeled point above waterline.
Vented loop installations must vent above highest FIG 3
heeled point above waterline (see WARNING below). Optional Valve
Use stainless steel hose clamps on all sanitation con-
nections.

WARNING: HAZARD OF FLOODING
• Installations at or below waterline, at FIG 4 Below waterline installation
greatest angle of heel, MUST have a
VENTED LOOP installed between the
Pump’s Discharge and Seacock/Thru Vented loop 10" above
Hull Fitting. Install vented loop per max heeled
manufacturer's instructions. water line
• Double clamp all below waterline hose
connections.

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