What Should We Know After Finished Install HEPA Filter

2019-01-19

What Should We Know After Finished Install HEPA Filter

HEPA Filter structure:

Frame, gasket, filter media, spacer, glue, hot-melt spacer,

protective net, PU foam.

The ULPA/HEPA/EPA filter life and maintenance

A: General speaking, if the filter finally pressure is double or triple than

primary pressure, it is time to change a new air filter.

B; please check and test the area clean class, the test date should satisfy

with workshop require.

C: if you often change the pre-filter or secondary filter, it can prolong the

HEPA filter life.

Problem and solution:

Problem

Reason

Solution

There is some particular when you scan

1:the surface of media has particular

2: the frame have small

aperture.

1: with the air blow

the filter for a while,

the particular will take

off

2: repair glue

After installing in clean

room, we find there air

leakage

1; the gasket was broken

2: the installation frame or

air hole has small leakage

1: change the gasket.

2: check the install frame and air hole. proof it with glue.

After finishing installation,

the clean room system

can not reach requirement in test.

1. Clean room inside is

sub-pressure.

2. The system pressure is

not enough.

Increase air flow in

system

Find there is a lot of air

leakage

The filter is damaged

Change filter

The air system supply

enough rating air flow, but

air velocity is still small

The filter reached its rating

capacity for dust holding

Change filter