5
MDX DEBRIS REMOVAL SYSTEM INSTALLATION
Vacuum Breaker Method 4:
Suction vacuum release device, mechanical, or electromechanical, venting or non-venting, may be used provided it is
tested
and
listed
by
a
nationally
recognized
testing
laboratory
in
accordance
with
ANSI/ASME A112.19.17 - Manufactured SVRS for Residential and Commercial Swimming Pool.
Plumbing:
1.
Position the MDX Sump 1" below the finished depth of the pool, spa or basin.
(Page 10, Fig. 5)
2.
Position the REQUIRED SDX High Flow Safety Drain
TM
on a sidewall of the pool, spa or basin. Method: the 2nd
Suction Outlet may be positioned on the floor a MINIMUM of three (3) feet away from any other Suction Outlet.
HYDROSTATIC FITTING:
The hydrostatic port inside the MDX Sump is equivalent to a 2" Threaded Female
Adapter and a 2" Slip Fitting Outside the MDX Sump. For non-hydrostatic installations, install the 2" plug provided.
This port is for the purpose of a hydrostat only. If a hydrostat is not used, plug this port. Do not install any suction
equipment (pump) to this port!
MDX PRESSURE TESTING
Old Style Test Plug:
1.
Use four wraps of Teflon tape. Insert plug into
threaded socket. Set plug wrench on lug and
tighten by hand until snug. Apply handle to wrench
and turn 1.5 to 2 turns. Do not under or over
tighten plug.
OR USE ALTERNATE METHOD
If using silicone sealant, install plug a day before
using. Remove Teflon tape. Apply silicone liberally to
threads of plug. Insert plug into threaded socket.
Tighten by hand until snug. Do not over tighten
plug. Allow silicone to set for 24 hours before
putting under pressure.
2.
Install a pressure stack to both lines at a
location away from the MDX Debris Removal
System Sump.
3.
Pressure should remain on the system through
construction until interior cleanup.
Notice:
Release pressure on the system before removing plugs
2” HYDROSTATIC PLUG
2 1/2” PLUGS (QUANTITY=2)
Pressure Test-READ BEFORE INSTALLATION:
New Style Test Plug
The new style 2 1/2” pressure test plugs (005-252-1611-00) use an o-ring to make the seal.
Wrap once withTeflon tape to prevent plastic threads from binding. Insert plug into threaded socket. Set
plug wrench on lug and tighten by hand until snug. Apply handle to wrench and turn. Over tightening may
cause parts to break.
N
NO
OT
TE
E::
If have a sump withiut the o-ring groove around the socket, proceed with one of the alternate
methods below to make the seal.
