Float Switch Installation - Master PLUMBER 176950 Owner's Manual

Installation

Float Switch Installation

Models equipped with vertical switches require some
assembly. See below.
Installation
1. Install pump in sump pit with minimum diameter of 10"
(254mm) for models equipped with vertical switches
and 14" (356mm) for tethered float switch models.
Sump depth should be 16" (406mm) for tethered
models and 10" (254mm) for vertically switched
models. Construct sump pit of tile, concrete, steel or
plastic. Check local codes for approved materials and
for proper installation.
For parts or assistance, call Master Plumber Pump Customer Service at 800-628-9439
2. Install pump in pit so that switch operating mechanism
has maximum possible clearance.
3. Pump should not be installed on clay, earth or sand
surfaces. Clean sump pit of small stones and gravel
which could clog pump. Keep pump inlet screen clear.
NOTICE Do not use ordinary pipe joint compound on plastic
pipe. Pipe joint compound can attack plastics.
4. Install discharge plumbing. Use rigid plastic pipe and
wrap threads with PTFE pipe thread sealant tape.
Screw pipe into pump hand tight plus 1-1/2 turns.
Risk of flooding. Can cause personal injury
and/or property damage. If a flexible discharge hose is
used, make sure pump is secured in sump to prevent
movement. Failure to secure pump may allow pump
movement, switch interference and prevent pump from
starting or stopping.
5. To reduce motor noise and vibrations, a short length
of rubber hose (1-7/8" (47.6mm) I.D., e.g. radiator hose)
can be connected into discharge line near pump using
suitable clamps.
6. Install an in-line check valve or an in-pump check valve
to prevent flow backwards through pump when pump
shuts off.
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