12
The valve inlet must be installed between the pump discharge port and the non-
pressurized side of the discharge check valve. The valve inlet is it at the large end of
the valve body, and is provided with standard 25mm NPT pipe threads.
The valve outlet is located at the opposite end of the valve, and is also equipped with
standard 25mm NPT pipe threads. The outlet should be connected to a bleed line
which slopes back to the wet well or sump. The bleed line must be the same size as the
inlet piping, or larger. If piping is used for the bleed line, avoid the use of elbows
whenever possible.
NOTE:
It is recommended that each Air Release Valve be fitted with an
independent bleeder line directed back to the wet well. However, if multiple airs
Release Valves are installed in a system, the bleeder lines may be directed to a
common manifold pipe. Contact your Remko distributor for information about
installation of an Automatic Air Release Valve for your specific application.
The alignment of the pump and its power source is critical for trouble-free mechanical
operation. In either a flexible coupling or V-belt driven system, the driver and pump
must be mounted so that their shafts are aligned with and parallel to each other. It is
imperative that alignment be checked after the pump and piping are installed, and
before operation.
NOTE:
Check
Rotation
, Section C, before alignment of the pump.
When mounted at the Remko factory, driver and pump are aligned before shipment.
Misalignment will occur in transit and handling. Pumps must be checking alignment,
tighten the foundation bolts. The pump casing feet and/or pedestal feet, and the driver
mounting bolts should also be tightly secured.
7. ALIGNMENT
When checking alignment, disconnect the power source to ensure that
the pump will remain inoperative.
WARNING!
Adjusting the alignment in one direction may alter the alignment in
another direction. Check each procedure after altering alignment.
CAUTION!
Coupled Drives
When using couplings, the axis of the power source must be aligned the axis of the
pump shaft in both the horizontal and vertical planes. Most couplings require a specific
gap or clearance between the driving and the driven shafts. Refer to the coupling
manufacturer's service literature.
Align spider insert type couplings by using calipers to measure the dimensions on the
circumference of the outer ends of the coupling hub every 90 degrees. The coupling is
in alignment when the hub ends are the same distance apart at all points (see Figure 6
page 13).