Drain-All Model 1700-IG Installation Manual - Page 8

Browse online or download pdf Installation Manual for Control Unit Drain-All Model 1700-IG. Drain-All Model 1700-IG 12 pages.

Print Page

Drain-All Model 1700-IG Installation Manual

Where should a Drain-All be installed?

At liquid accumulation points within a

system at compressors, air receiver tanks,

intercoolers, aftercoolers, dryers, separa-

tors, filters and drip legs.

Is this an oil-water separator?

No. Drain-All is a liquid drain and it will

drain oil, water, and particulates from the

compressed air system. Once this is

accomplished, the discharge should be

piped to an oil-water separator for final

processing.

Does this replace a dryer?

No. Drain-All works in conjunction with

a dryer. Dryers typically convert water

vapor in the compressed air into liquid

which is usually discharged through a

small automatic drain device integral to

the dryer. These small automatic drains

are often prone to clogging and failure.

When this occurs, such drains are nor-

mally replaced with Drain-All units

which do not clog. A dryer prepares the

moisture for removal from the system by

condensing it. It is the job of the reliable

Drain-All to ensure that the liquid is

actually discharged from the air system.

Is it mandatory to use a balance line?

Yes. The balance line provides a means to

handle the displaced air from the reser-

voir as the liquid enters the reservoir.

What is the capacity?

In each application, based on pressures

and piping layout for that application, a

Drain-All model will eject a specific

amount of liquid on each cycle. This

varies by model and application.

What size compressor can it handle?

There are Drain-All models that will

function effectively on any size compres-

sor, compressed air system, atmospheric,

or vacuum system. Provide your distrib-

utor with specifications on the pressure

and capacity of liquid you need to handle

and an appropriately sized Drain-All can

be selected for your application.

022802 Model 1700-IG

FREQUENTLY ASKED QUESTIONS

Can one Drain-All be used to drain

multiple tanks and/or compressor sys-

tems?

No. They will not all be of precisely the

same pressure level and the liquid would

accumulate in the lowest pressure drain

or system thereby bypassing the Drain-

All. Also, the use of check valves in mul-

tiple drains to one Drain-All installation

will not make this work properly.

Always install one Drain-All for each

item of equipment to be drained.

Can a Drain-All be used in systems

with pressure greater than 170 PSIG?

Yes. Higher pressure models are avail-

able. If the control air comes from higher

pressure systems, a pressure regulator on

the control air line may be used and set at

the proper control air pressure or option-

al control air components can be ordered

to accommodate higher pressures.

Can the balance line and the control

air line be hooked together via a tee

connection?

No. Do not do this. Each of these air

lines has its own specific purpose and

should never be tied together. The con-

trol air should be the cleanest driest air

available since it supplies air to the con-

trol circuit to operate the pneumatic actu-

ating cylinder which functions best and

lasts longer if clean dry air is used.

The balance line allows the air in the

reservoir to move out leaving room in the

reservoir for the incoming liquid. This air

contains moisture that would be drawn

across a tee fitting tied to the control air

line and be pulled directly into the con-

trol air circuit, which can damage control

air pathways and the air cylinder.

Is there only one model Drain-All?

No. There are models for a wide range of

special applications. Dimensional alter-

ations, design changes, component

options and special materials or coatings

are used in models to withstand high tem-

peratures and highly corrosive environ-

ments as well as accommodate high vol-

ume discharge requirements.

Page 8

What if the system has an abundance

of metallic trash?

Before installing the Drain-All, blow

down the system being drained to elimi-

nate as much existing loose scale as pos-

sible. The large, smoothly contoured flow

paths in Drain-All units handle normal

levels of debris found in most applica-

tions.

Should there be an excessive

amount of debris such as heavy rust, ask

your distributor about Drain-All's Rust

Handler

Model designed for that kind

of severe duty.

How can the Drain-All be used as an

instrument to gather data on conden-

sation in a compressed air system?

With the use of Drain-All's optional

cycle counter, the Drain-All can provide

accurate data on the amount of liquid that

a compressed air system generates. This

is very useful when buying new com-

pressed air system equipment because a

Drain-All with a cycle counter is a

benchmarking instrument. Since the

Drain-All discharges the same amount of

liquid on every cycle, knowing the num-

ber of cycles over a specific period of

time under specific temperature and

humidity conditions provides the ability

to track liquid production. This bench-

marking can be correlated to ongoing

changes in ambient temperature and

humidity conditions to identify variances

in liquid production indicating changes

which need investigation. Too few cycles

would mean not enough liquid is reach-

ing the Drain-All and should be investi-

gated. Too many cycles would mean too

much liquid is being made or too much

liquid from somewhere is reaching the

Drain-All and should be investigated.

Knowing the amount of liquid a system

produces is also essential for properly

sizing oil-water separators.