Service manual

EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
8
SECTION 5: PUMP INSTALLATION
5.1 Pump Assembly Instructions
5.1.1 Determine Orientation of Pump Discharge
To ensure your safety, and comply with the terms of
the warranty, all units must be installed in accor-
dance with these instructions.
The pump must be installed in a location that it is
readily accessible for servicing.
Pump discharge orientation is viewed from the rear
of the motor as shown in on Page 8, Figure 2. Note
that the pump scroll outlet must always be positioned
at the bottom horizontal position.
FIGURE 2: Pump Discharge Orientation
5.1.2 Attaching Pump Scroll
After determining the correct orientation of the pump
scroll outlet, attach the pump scroll to the pump
frame as follows:
• In Box 2 of 2, locate the EP-300 Scroll/Inlet fas-
tener package containing hex nuts and washers.
• Place scroll assembly over impeller and align M8
screw studs on the scroll assembly with the holes
on the frame. Place the scroll assembly onto the
pump frame. Be careful not to damage gasket.
• From the motor side of the vertical mounting plate
of the frame, place an M8 washer onto the M8
screw stud. Then thread the M8 hexnut onto the
M8 screw stud, finger tighten. Repeat for all 12
screw studs. See Page 9, Figure 3.
NOTE: While tightening the nuts that secure the
pump scroll to the pump frame, periodically spin
the impeller to be sure that adequate clearance is
maintained between the impeller blades and the
body of the pump scroll.
5.1.3 Attaching the Inlet Plate Assembly
From the scroll assembly side of the pump, orient the
inlet assembly so the threaded pipe coupling is on
the top. See partial end view on Page 9, Figure 3.
• Place inlet assembly onto the scroll assembly by
fitting the inlet assembly onto the M8 screw studs
on the scroll assembly. Be careful not to damage
gasket.
• Place M8 washers onto the M8 screw stud.
Thread the M8 hex nuts onto the M8 screw studs,
finger tighten. Repeat for all 12 screw studs. See
Page 9, Figure 3.
• Go back and tighten all 24 M8 hex nuts with a
wrench to completely secure pump scroll assem-
bly to the pump frame and pump inlet assembly to
the pump scroll assembly.
Bottom Right Horizontal Discharge
Bottom Left Horizontal Discharge