Dragon Wholesaling 178 Series Instrukcja instalacji, obsługi i konserwacji - Strona 4

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Introduction

This manual contains instructions for the installation, operation, and maintenance of the Dragon

178 Series Pump. As pump service conditions and specifications vary considerably in pump

installation, this manual cannot possibly cover every situation, but it is hoped that the informa-

tion included will serve as a guide. Should questions arise, or start-up problems occur, it is sug-

gested that you contact the Dragon Pump Distributor or Salesman in your area. The 178 Series

pump generation is an improved version of older 1 1/8 inch shaft pumps. The 178 Series pump

is designed to give longer service life through oil bearing lubrication, stainless shaft and casing

nuts, a replaceable stuffing box and a replaceable wear plate which can be easily removed with

jack bolts on the pump. There are many principles of proper pump installation and application

as well as special considerations for the 178 Series design which, if followed, will further

enhance the performance of your 178 Series pump. This document will deal with both general

and specific recommendations for improved 178 Series performance in both oilfield and industrial

applications.

General Instructions

1. Operate the pump only in the performance range for which it was designed.

2. The pump driver must drive the pump CLOCKWISE when viewed from the

coupling end. Reversing the rotation will prevent the pump from operating effectively.

3. Do not operate the pump with the suction or discharge valves closed.

4. Adjust the packing so that a small amount of leakage remains for lubrication and cooling.

5. When operating in drilling mud, prevent packing drippage from clogging the drip area and

hardening around the slinger and front seal.

PART 1- Installation

Interchangeability

The 178 Series horizontal centrifugal pump outside envelope dimensions are the same as older

inch pumps of the same nominal size so the models can be interchanged without changing

existing piping, couplings, or bases.

Location

The pump should be located near the liquid source so that the suction line can be short and

direct. The pump should be located below the level of the liquid to eliminate the necessity of

priming.

Foundation

The foundation should be sufficiently rigid and substantial to absorb any vibration and support

the base plate at all points. A concrete foundation, poured on a solid footing of adequate thick-

ness to support the pumping unit, provides the most satisfactory foundation. The base plate

should be installed in a level position.

Note: A detailed description of proper procedures for grouting base plates may be found

in the Hydraulic Institute Standards, 13th Edition, Pages 116,117. When fabricated bases

or fabricated skid bases are utilized, the foundation should be sufficiently rigid and level

to absorb any vibration and support the base at all points.

Coupling Alignment

Good service life of the pump and driver depends upon good alignment through the flexible coupling.