Marine Air Systems vector compact - Maintenance; Seawater System, Return Air Filters, Winterization

Marine Air Systems vector compact

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MAINTENANCE

Seawater

Strainer

Insure

that

your

pump

receives

adequate

seawater

flow

by

regularly

cleaning

the

strainer

basket.

Periodically

check

the

overboard

discharge

for

a

steady

stream

of

water.

Check

seawater

intake

speed

scoop

for

obstructions.

Make

sure

hoses

are

not

looped,

kinked

or

crushed.

Seawater

Pump

If

the

capacity

of

your

air

conditioning

system

is

greater

than

24,000

BTU/hr,

the

seawater

pump

is

most

likely

air-cooled

and

will

need

occasional

oiling.

See

manufacturer's

labeling

on

the

pump

for

maintenance

instructions.

Condenser

Coil

Cleaning

1.

With

the

system

turned

off

at

the

circuit

breaker

on

the

ship's

panel,

disconnect

the

inlet

and

outlet

connections

of

the

condenser

coil.

2.

Use

chemical

resistant

hoses

(MAS

white

PVC

5/8"

I.D.,

etc.)

to

connect

the

inlet

of

the

condenser

coil

to

the

outlet

of

a

chemical

resistant,

submersible

pump

(MAS

P-500

pump,

etc.)

and

let

the

hose

connected

to

the

coil

outlet

flow

freely

into

the

container

mentioned

below.

3.

Place

a

strainer

or

piece

of

screen

over

the

inlet

of

the

pump

and

submerse

the

pump

into

a

container

filled

with

a

5%

solution

of

muriatic

or

hydrochloric

acid

and

fresh

water

or

use a

premixed

over-the-counter

solution.

Use

as

large

a

container

as

possible

to

hold

the

solution

(5-25

gal.).

Caution:

avoid

spilling

or

splashing

the

solution.

Follow

all

warnings

and

recommendations

given

by

the

manufacturer

of

any

acids

or

pre-mixed

solutions.

4.

Power

the

pump

and

circulate

the

solution

through

the

condenser

coil

for

15-45

minutes

depending

upon

the

size

of

the

coils

and

the

extent

of

the

contamination.

Visual

inspection

of

the

solution

in

the

container

should

indicate

when

contamination

removal

has

stopped.

5.

Circulate

fresh

water

through

the

coil

to

flush

any

residual

acid

from

the

system.

6.

Restart

the

system

and

check

operational

parameters

to

ensure

thorough

cleaning

has

taken

place.

Additional

cleaning(s)

may

be

necessary

with

extreme

contamination.

Warning:

For

the

purpose

of

protecting

the

environment,

dispose

of

any

contaminated

acid

solutions

in

accordance

with

federal,

state

and/or

local

regulations.

Return

Air

Filters

Check

the

return

air

filter

about

once

a

month

and

clean

as

necessary.

To

clean

the

filter,

remove

it

from

the

unit/grille,

rinse

with

water,

air

dry

and

reinstall.

Winterization

There

are

several

methods

of

winterization,

some

of

which

work

better

than

others.

The

four

various

methods

employed

using

a

50/50

non-polluting

biodegradable

anti-freeze/water

solution

are:

1.

Pumping

of

anti-freeze

solution

into

the

overboard

thru-hull

fitting,

and

discharging

through

the

intake

thru-hull

fitting.

2.

Use

of

the

seawater

pump

to

pump

anti-freeze

solution

through

the

system

and

discharging

through

the

overboard

thru-hull

fitting.

Close

sea

cock,

remove

hose

from

strainer

discharge,

raise

hose

above

pump

(so

pump

does

not

lose

its

prime)

and

pour

in

anti-freeze

solution.

Pump

solution

through

system.

The

strainer

and

hose

to

sea

cock

will

also

need

to

be

drained

of

water.

3.

Use

of

pressurized

air

injected

at

the

overboard

discharge

fitting

and

the

water being

discharged

through

the

seawater

intake

fitting.

4.

Use

of

pressurized

air

to

force

water

from

the

intake

through

the

overboard

discharge.

Any

method

that

causes

the

anti-freeze

solution

to

flow

downward

is

the

method

of

choice.

By

this

means,

the

anti-freeze

solution

will

displace

any

water

trapped

and

eliminate

the

possibility

of

freezing

in

hidden

areas.

In

addition,

since

the

seawater

pump

utilizes

a

magnetically

driven

impeller,

the

impeller

should

be

removed

from

the

wet

end

assembly,

wiped

with

an

alcohol

solution,

and

stored

in

a

warm,

dry

area

until

commissioning

takes

place.

Note:

Collect

all

discharged

liquids

and

recycle

or

dispose

of

in

a

proper

manner.

22

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