Hoffmann&Hoffmann Dripmaster EDD-4SH Manuale utente

Dripmaster EDD-4SH

U.S. Patent No. 5,996,739 & other countries

User Guide

Document filename: Dripmaster_EDD-4SH_User Guide_22Dec15.doc

Important notice: Hoffmann & Hoffmann reserves the right to change this document without further notice due

to design improvements, functional modifications or quality/reliability amendments.

CAUTION!

ENSURE THE FREE FLOW OF OIL

From oil tank

To drain

Entire drain tube must face downward to prevent oil backup.

Contents

Section 1: Introduction ............................................................................................................................... 5

Overview .......................................................................................................................................... 5

Section 2: Installation ................................................................................................................................. 6

General............................................................................................................................................. 6

Well Site Requirements.................................................................................................................... 6

Installation Kit................................................................................................................................... 8

Mounting the Dripmaster.................................................................................................................. 8

Wiring the Power and Control Cables.............................................................................................. 9

Setting the Drip Rate...................................................................................................................... 12

Section 3: Operation ................................................................................................................................ 13

Controls and Indicators .................................................................................................................. 13

Resetting the Dripmaster ............................................................................................................... 16

Automatic Control........................................................................................................................... 16

Setting Normal (pump on) Mode Drip Rates ....................................................................... 16

Pre-lube (pump off) Mode.................................................................................................... 19

Manual Control............................................................................................................................... 19

Section 4: Theory of Operation ................................................................................................................ 20

General........................................................................................................................................... 20

Search Feature .............................................................................................................................. 22

Push-Down and Push-up Features................................................................................................ 23

Section 5: Maintenance and Troubleshooting.......................................................................................... 24

Section 6: Specifications .......................................................................................................................... 26

Overall Dimensions ........................................................................................................................ 27

Section 7: Dripmaster Service Policy....................................................................................................... 28

Installation ...................................................................................................................................... 28

Repair procedure ........................................................................................................................... 28

PC Board Replacement in the Field...............................................................................................29

Product within the Warranty Period ............................................................................................... 30

Product Out-of-Warranty Period .................................................................................................... 30

Return Instructions ......................................................................................................................... 30

Terms & Conditions on reverse ..................................................................................................... 31

List of Figures

Figure 1: Dripmaster EDD-4SH ............................................................................................................ 5

Figure 2: Installation requirements ....................................................................................................... 7

Figure 3: Dripmaster—rear view showing mounting centers................................................................ 8

Figure 4: Connection box – cable routing............................................................................................. 9

Figure 5: Connection box – electrical terminals: 115 VAC unit shown................................................. 9

Figure 6: Connection box PCB – wiring diagram................................................................................ 10

Figure 7: Dripmaster control panel ..................................................................................................... 13

Figure 8: Dripmaster EDD-4SH Needle Valve Assembly................................................................... 19

Figure 9: Common Needle Valve compared to Dripmaster................................................................ 20

Figure 10: Dripmaster functional diagram .......................................................................................... 21

Figure 11: Dripmaster EDD-4SH Needle Valve Assembly................................................................. 22

Figure 12: Dripmaster dimensions...................................................................................................... 27

Figure 13: Dripmaster PC board replacement.................................................................................... 29

List of Tables

Table 1: Connection box—power and control lines............................................................................ 11

Table 2: Pump On/Off conditions ....................................................................................................... 12

Table 3: Control panel—controls and indicators................................................................................. 13

Table 4: Routine Maintenance............................................................................................................ 24

Table 5: Troubleshooting .................................................................................................................... 24

Table 6: Dripmaster EDD-4SH specifications..................................................................................... 26

Table 7: Oil volume fed to line shaft ................................................................................................... 26

Section 1: Introduction

Overview

The Dripmaster is an active vertical line-shaft lubrication control and monitoring device. It

automatically stabilizes the oil drip rate so as to comply with pump manufacturer's requirements.

Figure 1: Dripmaster EDD-4SH

Constant drip rate is maintained regardless of ambient temperature or hydrostatic pressure in the

feeding oil tank. This is achieved by monitoring and controlling the drip rate 55 times per hour.

There are two modes of operation:

•Normal (pump on) mode—when the well pump is operational

•Pre-lube (pump off) mode—ensures that the line-shaft is lubricated prior to turning on the well

pump.

Automatic switching between the Normal (pump on) and Pre-lube (pump off) modes is achieved by

remotely sending a control signal to the Dripmaster.

The SCADA interface provides:

•Accurate oil consumption data (drip rate count)

•Total lack of oil warning

•Automatic pump shutdown

A built-in manual mechanism ensures oil flow even in the remote possibility of unit malfunction.

Section 2: Installation

General

The Dripmaster installation procedure is simple and does not require any special tools, but requires

site preparation.

Well Site Requirements

•Line power (115 VAC or 220 VAC), or 24 V DC/AC must be available at the well pump.

•An eight-wire control cable (containing wires not smaller than 22 AWG) needs to be laid

between the well pump and the local PLC enclosure.

•A sturdy, vertical pole with a welded metal plate should be in close proximity to the well pump.

Note: For large oil tanks (35 to 50 gallons), mount the Dripmaster to the oil tank stand.

Important: The relative spacing between the oil tank, the Dripmaster, and the line-shaft inlet should be

according to Figure 2. In order to maintain minimal oil pressure on the needle valve (especially

when the oil tank is almost empty), the oil inlet should be in the range of 10 to 14 inches below

the oil tank.

10 to 14 inches

(25.4 to 35.6 cm)

1/4-inch

(0.635 cm)

copper pipe

Oil filter

Oil tank

1/4-inch flexible

copper tubing

Lineshaft

ENTIRE TUBE

MUST FACE

DOWNWARD

Figure 2: Installation requirements

Installation Kit

The Dripmaster is supplied with the following parts:

1 – oil filter (fuel filter for ¼-inch hose)

4 – mounting bolts

8 – nuts

8 – lock washers

2 – cable bushings (glands)

Make sure that all of the kit items are present. You need to obtain ¼-inch fuel hose to complete the

installation.

Mounting the Dripmaster

1. In order to mount the Dripmaster, drill four 1/4-inch holes in the metal plate that mounts the

Dripmaster according to the drilling template shown in Figure 3.

Note: The mounting centers for the Dripmaster are shown on the back of the unit for convenience.

Mounting the unit does not require more than four bolts.

2. Remove the Dripmaster front covers.

3. Place a bolt into a mounting hole, and keep it in place by using a nut.

4. Repeat step 3 for the other bolts.

5. Secure the device to the metal plate using the remaining nuts and lock washers.

9.45 inches (240 mm)

4.33 inches

(110 mm)

For ¼”

mounting bolts

Figure 3: Dripmaster—rear view showing mounting centers

Wiring the Power and Control Cables

Power and control cables are routed through the bottom of the connection box through two strain

relief bushings.

Power cable entry Control cable entry

Green ground wire

connects here

Figure 4: Connection box – cable routing

Wire the connection box according to Figure 5. Connections are described in detail in Table 1 on

page 11.

Control

cable

Power cable

115 VAC (220 VAC)

24 VDC

(24 VAC optional)

24VAC/DC S.B. - Pre-lube (pump off) mode

LL - Total lack of oil

PULSE - Drip indication

O.K.

.- Sufficient lubrication

Voltage selector switch SW1:

115 VAC (220 VAC) /

24 VDC (24 VAC optional)

Note: You can shut down the pump

automatically using the O.K. relay

contacts.

Figure 5: Connection box – electrical terminals: 115 VAC unit shown

24V DC/AC

24VAC/DC

S.B.

PULSE

O.K.

{

24V DC/AC

Control

cable

Optional

power

cable

115/220 VAC

O.K.

Figure 6: Connection box PCB – wiring diagram

Note: Line voltage is either 115 VAC, 60 Hz or 220 VAC, 50 Hz. The unit can be powered by line

voltage or optionally by 24 V (DC or AC).

Note: Each of the signals associated with the control signal terminal block are not polarity dependent

(24VAC/DC S.B., LL, PULSE, and O.K.).

Note: Avoid daisy-chain connections of the control signal returns – if the ground potentials of each

return differ.

1. Set the power switch SW1 located just below the transformer, for line power (115 VAC or

220 VAC) or 24 V DC/AC according to your requirements. See Figure 5.

2. Route the power cable through a cable strain relief on the left side of the connection box

(Figure 4).

3. Connect the green ground wire to a chassis screw or bolt, preferably using a ring terminal. See

Figure 4.

4. Route the control cable through the right cable strain relief (Figure 4).

5. Connect control cable according to Table 1.

Indice

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