Pulsafeeder DGF2 User Manual

DIGITAL GLYCOL FEEDER

DGF1, DGF2

OPERATING INSTRUCTIONS

P/N: 72-900-24 Rev J

(06-22-07)

Manufactures of Quality Pumps, Controls and Systems

STANDARD PUMP OPERATION 27101 Airport Road Punta Gorda, FL 33982 Telephone (941) 575-3800 Fax: (941) 575-4085 (800) 333-6677 www.pulsa.com

FACTORY SERVICE POLICY

Your Digital Glycol Feeder (DGF) is designed to make-up lost glycol in a closed loop system. If you are experiencing a problem with your DGF consult the trouble-shooting guide. If the problem is not covered or cannot be solved, please contact your local Pulsafeeder Representative or our Technical Service Department at (800) 333-6677 for further assistance.

Trained individuals are available to diagnose your problem and arrange a solution. Solutions may include purchasing a replacement unit or returning the DGF to the factory for inspection and repair. All returns require a Return Material Authorization (R.M.A.) number to be issued by Pulsafeeder. Pulsafeeder personnel may credit replacements purchased under a possible warranty situation after an examination of the original parts.

Certain components may be purchased for replacement. Pulsafeeder personnel may credit parts purchased to correct a warranty issue after examination of the original parts. Parts returned for warranty consideration that test satisfactorily will be sent back to the originator freight collect.

Any field modifications will void the Pulsafeeder Digital Glycol Feeder warranty. Out-ofwarranty repairs will be subject to Pulsafeeder's standard bench fees and testing costs associated with replacement components.

WARRANTY

Pulsafeeder Inc. warrants the Digital Glycol Feeder against defects in materials or workmanship for a period of one year under normal use, from the date of shipment. The manufacturer's liability is limited to the repair or replacement of any failed component that is proven defective in material or workmanship upon manufacturer's examination. This warranty does not include removal or installation costs and in no event shall the manufacturer's liability exceed the selling price of such equipment.

This warranty does not extend to damage by corrosion, erosion, mishandling, any force of nature or any other conditions beyond the seller's reasonable control.

The manufacturer disclaims all liability for damage to its products through improper installation, maintenance, use or attempts to operate such products beyond their functional capacity, intentionally or otherwise or any unauthorized repair. The manufacturer is not responsible for consequential or other damages, injuries or expenses incurred through the use of its products.

The above warranty is in lieu of any other guarantee, either expressed or implied. The manufacturer makes no warranty of fitness or merchantability. No agent of ours is authorized to make any warranty other than the above.

FCC WARNING

This equipment generates and uses radio frequency energy. If not installed and used properly, in strict accordance with the manufacturer’s instructions, it may cause interference to radio communications. Operation of this equipment in a residential area is likely to cause interference in which case the user, at his own expense, will be required to take whatever measures necessary to correct the interference.

be reproduced, stored in a retrieval system or transmitted in any form or any means electronic or mechanical, including photocopying and recording for any purpose other than the purchaser’s personal use without the written permission of Pulsafeeder, Inc.

Table of Contents

1. INTRODUCTION .....................................................................................................................................1

1.1 Systems and Options..............................................................................................................2

2. I

NSTALLATION ......................................................................................................................................3

2.1 Assembly..................................................................................................................................3

2.1.1 Tools Required For Assembly........................................................................................3

2.1.2 Pre–Assembly..................................................................................................................5

2.1.3 Location............................................................................................................................6

2.1.4 Plumbing...........................................................................................................................6

2.1.5 Mounting The Tank..........................................................................................................7

2.1.6 Mounting The Controller.................................................................................................8

2.1.7 Installing The Level Wand...............................................................................................9

2.1.8 Connecting The Pressure Switch...................................................................................10

2.1.9 Connecting The Pump.....................................................................................................10

2.1.10 Connecting The Re-Circulation Line..............................................................................10

2.2 Electrical Wiring ......................................................................................................................12

2.2.1 115VAC Pre-Wired Unit Connections ............................................................................12

2.2.2 115VAC/230VAC Conduit Connections.........................................................................15

3. G

LYCOL FEEDER SYSTEM.....................................................................................................................23

3.1 User Interface...........................................................................................................................23

3.2 Start Up & Calibration.............................................................................................................24

4. O

PERATION ..........................................................................................................................................28

4.1 Operating Modes.....................................................................................................................28

4.1.1 Normal...............................................................................................................................28

4.1.2 Feeding Glycol.................................................................................................................28

4.1.3 Alarm.................................................................................................................................28

5. S

PECIFICATIONS ...................................................................................................................................29

5.1 Environment.............................................................................................................................29

5.2 Power Requirements...............................................................................................................30

5.3 Inputs........................................................................................................................................30

5.4 Outputs.....................................................................................................................................31

5.4.1 Pump.................................................................................................................................31

5.4.2 Alarm.................................................................................................................................31

5.5 Audible Indicators...................................................................................................................31

6. T

ROUBLE SHOOTING.............................................................................................................................32

7. M

AINTENANCE......................................................................................................................................33

7.1 Cleaning ...................................................................................................................................33

8. P

UMP INFORMATION..............................................................................................................................34

8.1 Drive..........................................................................................................................................34

8.2 Suction Lift...............................................................................................................................34

8.3 Rotation....................................................................................................................................34

OTES........................................................................................................................................................37

PPENDIX A – REFERENCE CHARTS............................................................................................................38

iii

Conventions

For the remainder of this bulletin, the following Conventions are in effect.

A WARNING DEFINES A CONDITION THAT COULD CAUSE DAMAGE TO BOTH THE EQUIPMENT AND THE PERSONNEL OPERATING IT WARNING

Notes are general information meant to make operating the equipment easier.

Tips have been included within this bulletin to help the operator run the equipment in the most efficient manner possible. These “Tips” are drawn from the knowledge and experience of our staff engineers, and input from the field.

. PAY CLOSE ATTENTION TO ANY

 This is a procedure heading. A Procedure Heading indicates the starting point for a

procedure within a specific section of this manual.

1. Introduction

The Digital Glycol Feeder (DGF), is designed to make-up for lost glycol in a closed loop system. It accomplishes this by monitoring system pressure. When system pressure drops below a set pressure (indicating glycol loss), the pump activates and restores the lost glycol, bringing the system pressure back to the proper operating level.

Model DGF1 includes a control unit in a NEMA Type 4 enclosure, a 55 gallon polyethylene tank, a level wand, a pressure switch and a positive displacement pump for controlling glycol feed in a single loop system. The feeder is mounted on a welded stand for ease in shipment and installation.

Model DGF2 controls a dual loop system.

Figure 1 – Typical Installation

1.1 Systems and Options

The Glycol Feeder for Closed Loop Systems includes:

• control unit in a NEMA type 4X enclosure

• 55 gallon polyethylene tank and stand

Refer to Figure 2 – Options List, for Glycol Feeder options.

Figure 2 – Options List

2. Installation

2.1 Assembly

 If your DGF is shipped to you unassembled, perform the following: (If you ordered the

assembled version go to section 2.2 – Electrical Wiring.)

FAILURE TO FOLLOW THESE WARNINGS AND ASSEMBLY INSTRUCTIONS COULD RESULT

IN SERIOUS INJURY OR DEATH

• Read all instructions carefully before assembly.

• Check all connections to ensure they are tight before applying pressure to the system.

• Wire in accordance to applicable electrical codes.

• Never subject components to full water immersion.

• Never attempt to move this system when the tank is full.

• DO NOT apply lateral force to the tank. The tank can tip spilling the contents.

• When filling the tank use care to prevent spillage or splashing on the wiring or tank cover.

• This system is designed for feeding Ethylene Glycol into pressurized closed loop systems.

• DO NOT run pumps dry.

• DO NOT exceed rated pressure of 80 psi.

DO NOT DEVIATE FROM THESE ASSEMBLY IN STRUCTIONS. QUALIFIED CUSTOMER

SERVICE REPRESENTATIVES CAN BE REACHED AT THIS TOLL FREE NUMBER IF ASSISTANCE IS NEEDED

: 1 (800) 333-6677.

2.1.1 Tools Required For Assembly

• Phillips head screw driver.

• Adjustable wrench.

Figure 3 – Glycol Feeder Assembly

2.1.2 Pre–Assembly

1. Unpack all cartons and inspect for damage. If shipping damage is found, save all packaging

and notify the carrier immediately. Lay out and identify all parts.

Item 1: Tank Plumbing Stack.

2: Controller mounted on a bracket with two-cover

Item mounting screws attached.

Item 3: Package of Cable Ties & Cable Tie Holders.

Parts List:

4: Pump/Stand assembly including stand, pump(s)

Item with tubing attached to both the suction and discharge sides, stand plumbing assembly(s), pressure switch cable (attached to switch) and re- circulation tubing (attached to the pressure relief valve on the back end of the stand plumbing stack).

Item

5: Tank with plumbing stack adapter attached.

6: Tank cover with two controller mounting screws

Item attached.

7: Level Wand

Item

Figure 4 – Parts ListLocation

1. Locate a space approximately 3’ x 3’ that is convenient to system piping and to an electrical

outlet or power source.

2. Place the tank stand in the installation location with the front (pump head/wet end side)

facing out.

THE ASSEMBLY IS VERY HEAVY AND HELP MAY BE REQUIRED. DO NOT LIFT THE

STAND BY THE PLUMBING STACK STAND ASSEMBLY

. USE GLOVES AS THE STAND MAY HAVE SHARP EDGES.

2.1.3 Plumbing

1. Attach the plumbing stack on the side of the stand to the closed loop system using a union

and shut off valve (not supplied).

(S). LIFT THE UNIT BY THE METAL FRAME OF THE

Figure 5 – Closed Loop Connection

2.1.4 Mounting The Tank

1. Turn the tank upside down and screw the plumbing stack assembly into the adapter attached

to the bottom of the tank. Tighten until snug plus 1/4 turn. Orient as shown in Figure 6 – Tank Installation below.

2. Lift the tank, turning the open side up with the plumbing stack against your body.

3. Tip the top of the tank toward you and lower the tank onto the stand while feeding the

plumbing stack through the pump support and under the front cross bar between the pumps.

Figure 6 – Tank Installation

2.1.5

Mounting The Controller

1. Loosen the screws mounted to the back of the controller mounting bracket. DO NOT

REMOVE!

2. Set the controller on the tank cover so that the holes in the front of the controller bracket slide

over the two screws mounted to the top of the tank cover.

3. Slide the bracket assembly towards the front of the unit so that the bracket fits under the

screw head while aligning the rear bracket screws with the pre-drilled holes in the tank cover and secure the rear screws.

4. Tighten the front screws.

5. Place the tank cover on the top of the tank so the controller is facing the front (wet) end of the

pump(s).

Figure 7 – Controller Installation

Refer to the Molex/Heat shrink sleeving procedure shown below while making the connections outlined in sections 2.1.7, and 2.1.8.

1 Find Mating Connections. 2 Slide heat shrink sleeving over one of the connectors. 3 Assemble the connectors together.

4 Slide heat shrink over connection. Shrink sleeving and secure each end with a

cable tie as shown.

2.1.6 Installing The Level Wand

1. Insert the Level Wand in the hole provided in the tank cover.

2. Adjust the height of the wand to the alarm level required by loosening the adjustment lock

nut and sliding the wand through the adapter.

3. Tighten the adjustment lock nut.

4. Connect the level wand cable to the three position cable on the back of the controller, marked

“LEVEL WAND”.

Figure 8 – Level Wand Installation

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