Drain-All Model 1700 Panduan Instalasi - Halaman 2

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Halaman Cetak

Before installing the Drain-All, Inc.

Model 1700

, a review of the following

items will help make the right decision

regarding options which could be used to

ensure long-term maintenance free oper-

ation.

RUST AND SCALE

Even though the Drain-All, Inc. Model

1700

is designed for handling rust and

scale, it is recommended that the system

be blown down after all piping is

installed and before the Model 1700

connected to the piping. The Model

1700

, with a large, smooth, liquid flow

path, easily handles contaminates in the

liquid once the system is in operation. If

there is excessive rust and scale on a con-

tinuous basis, consider using the Rust

Handler

designed for compressed air

systems that have extremely heavy

amounts of rust and scale.

CONTROL AIR & BALANCE LINE

The control air line provides air through

the sealed center tube to operate the air

cylinder. Clean dry air should be used for

this control air supply. The balance line

provides a means to handle the displaced

air from the reservoir as the liquid enters

the reservoir. The control air line and the

balance line are two separate lines which

have nothing in common with each other

and should never be connected to each

other in any way. Do not tie them togeth-

er with a tee fitting.

CONTROL AIR

Control air pressure requirements vary by

product and must be regulated within

specifications provided in the product's

Installation Guide. If the specified pres-

sure for control air cannot be supplied in

your application, contact your distributor

for information on control air options

offered by Drain-All, Inc. to accommo-

date your available control air pressure.

BALANCE LINE

The balance line must have either (1)

exactly the same pressure as the vessel

being drained or (2) slightly less pressure

than the vessel being drained.

022802 Model 1700-IG

INSTALLATION

The same pressure is achieved when the

balance line is tied back into the vessel

being drained, such as connecting the

balance line at a tee fitting on the vessel's

pressure gage or access port. A slightly

lower pressure may be achieved by locat-

ing the balance line connection on the air

header pipe a few feet downstream from

the vessel being drained. When hooking

the balance line to an air header, connect

it to the header prior to any other vessel

attached to the header.

If there is absolutely no place to connect

the balance line into the air system, or if

a temporary installation is to be made

while waiting for the next shutdown to tie

in the balance line, the balance line can

be vented to atmosphere. Install the nee-

dle valve that comes as a component of

the installation kit into the port on top of

the Model 1700

where ''Balance Line''

is indicated. Then follow the start-up

instructions for adjusting the opening of

the balance line needle valve. There will

be very little air loss to atmosphere.

NO MANIFOLDS

There cannot be multiple system drains

through a manifold to one Model 1700

This will not work because all system

drains will not be of the same pressure.

Therefore, the liquid from the higher

pressure drain lines will bypass the

Model 1700

and flow backwards up the

lower pressure drains. Installing check

valves on system drains is not a solution

because pressure variations which inhibit

proper operation will still be present.

Proper installation of the balance line is

not possible with multiple drains hooked

up through a manifold.

CORROSION

There are Drain-All, Inc. products avail-

able which include corrosion resistant

coatings and materials. If the application

environment is highly corrosive, check

these products and options to determine

if they should be specified. Also available

are Drain-All, Inc. products which handle

higher pressures and temperatures.

Page 2

INSTALLATION STEPS

1. Prior to installing the Model 1700

blow down the vessel being drained to

remove excessive rust, scale, and dirt

knocked loose during piping installation.

2. Remove the Model 1700

box and set it in an upright position

where it will be connected. Most Drain-

All, Inc. products do not have to be

secured. Larger volume and higher pres-

sure products may require some form of

movement restraint. To ensure proper

operation in all installation layouts, the

top of the Model 1700

than the bottom of the vessel being

drained.

3. Using 1/2" pipe, connect the vessel

being drained to the 1/2" liquid inlet on

the base of the Model 1700

install a shut-off valve and a bypass valve

between the vessel being drained and the

Model 1700

. This will allow easy

removal of the Model 1700

run" during any preventive maintenance

activities. After installing the piping,

close the inlet shut-off valve.

4. Using 1/2" pipe, connect the Model

1700

discharge outlet to a sealed drain

pipeline or enclosed/covered trough. The

discharged liquid is under pressure and

can splash back if directed downward

toward the bottom of a simple, shallow,

open trough-type floor drain.

5. Connect the balance line from the

Model 1700

to the appropriate connect-

ing point on the vessel being drained

using the tubing and needle valve provid-

ed in the installation kit. After installing

the balance line, close the balance line

needle valve.

6. Using the tubing and needle valve pro-

vided in the installation kit, connect the

control air supply line to the control air

filter inlet on the Model 1700

use the cleanest and driest air possible to

ensure long term maintenance free oper-

ation. After connecting the control air

line, close the control air needle valve.

from the

should be lower

. Be sure to

"on the

. Always