Pentair Myers MRGD300MC2 Manual De Instalación, Operación Y Piezas página 5

INSTALLATION
Install the pump as a free standing unit or with a guide rail
lift-out system.
Free-Standing Unit:
Install the pump on the floor of an open top basin. Install a
pipe union in the discharge piping, so that the pump can be
lifted out of the basin without interference.
Lift-out System:
(see Assembly Steps, Page 4)
(See Figures 4 and 5 before assembling)
1. Mount the base flange (See Step 1, Page 4) to the basin
floor.
2. Thread the 2-1/2" (64 mm) dia. pipe section (Step 2) into
the base flange and tighten it.
3. Install the stationary flange (Step 3) on the base pipe
and tighten the set screw to hold it.
4. Install the connecting plumbing in the stationary flange
(Step 4).
5. Thread the user supplied 1" (25 mm) dia. guide rails
(Step 5) into the stationary flange and tighten them.
6. Mount the upper rail bracket on the angle bracket
(Step 6).
7. Install the angle bracket and upper rail bracket assembly
in the tank or attach it to the basin lid as desired
(Step 7).
8. Install the basin lid now if the guide rail bracket is
mounted on it (Step 8).
The stationary parts (all those parts mounted in the basin)
of the guide-rail lift-out system are now complete. Go on to
Step 9 to assemble the movable parts of the system. These
will mount on the pump discharge assembly.
9A. Thread one of the short nipples into the pump dis-
charge; add a union half and tighten the assembly.
9B. Clamp the ball check valve in a vise; thread the 2x6" nip-
ple into the inlet side. Slide the guide rail bracket (also
upside down) on to the nipple and thread the other union
half over the free end of the nipple. Tighten.
9C. Turn the assembly over in the vise and thread the other
short nipple onto the discharge side of the ball check
valve. Add the discharge pipe bracket and the movable
flange to this nipple and tighten the assembly. When
tight, the ball check should point to one side or the other
and the movable flange should point directly away from
you (that is, the check valve and the flange should be at
right angles to each other). Install two
O-Rings on the movable flange (see Step 9, Page 4).
10. Mount the ball check valve/discharge flange assembly
on the pump with the movable flange pointing directly
away from the pump. Tighten the union and thread the
eyebolt through the discharge pipe bracket into the the
threaded hole provided in the top of the pump.
11. Thread the locking rail into the movable flange; mount
the locking bracket and tighten.
The movable parts of the system are now complete. You are
ready to rig lifting gear and lower the pump into the basin.
12. Lift the pump assembly; slide the guide rail bracket and
the movable flange over the guide rails at the top and
lower the pump into the basin until it bottoms on the sta-
tionary flange. Raise the pump 1/8" and tighten the
guide rail bracket set screws.
13. Slide the locking bracket over the guide rails and locking
rail, then tighten all three set screws.
14. To remove the pump, loosen the guide rail set screws
in the locking bracket and hoist the pump out of the
basin.
CONTROLS
Risk of electric shock. Ground pump and
motor before connecting controls or power supply.
Adhere to local electrical codes governing pump and control
installations.
Install simplex or duplex control panel for proper pump oper-
ation. A full range of controls and switches is listed in our
catalog.
If a Myers control panel is not used, install a control panel
with circuit breaker or fused disconnect as required by local
code. Use magnetic starters with ambient compensated
overload protection. Three phase units require three line pro-
tection; single phase units require only one line protection.
Inadequate protection voids warranty.
Connect thermostat (black and white leads in control cable)
in series with magnetic starter operating coil so that in case
of overheating, pump will shut down. Failure to connect ther-
mostat circuit voids warranty.
Connect red lead of leak detection circuit to leak detection
probe. Green lead is connected to pump case; connect it to
ground or neutral side of indicating circuit. Either connect
seal leak detection circuit (red and green wires in control
cable) to an indicating circuit in control panel (to show seal
failure) or monitor circuit with an ohmmeter periodically. A
drastic drop in resistance across detection circuit indicates
seal failure.
Locking
Bracket
Angle Bracket
Upper
Rail Bracket
Guide Rail
Stationary
Flange
Base
Flange
Figure 5: Lift-out Guide System Nomenclature.
5
Locking Rail
Movable Flange
(Short Nipple
Under Flange)
Eyebolt
Discharge
Pipe Bracket
Ball Check Valve
Long Nipple
Guide Rail
Bracket
Union
Short Nipple
1940 0895