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AirStar Preventative Maintenance Kits
Part Numbers:
87351, 87352, 87353, 87354, 87355 & 87356
Service Instructions
Introduction
This document provides the instructions necessary to install AirStar Preventative Maintenance Kits, part numbers
87351, 87352, 87353, 87354, 87355 and 87356. The kits cover all AirStar compressor units with a Membrane Dryer.
Each provide parts for the replacement of the compressor Air Intake Filter, and the Top and Bottom Membrane
Filters with associated O-rings in the Membrane Dryer. The supplied replacement parts are listed and shown
below. Figure 1 shows the location of the filters to be replaced.
Task Guidelines.
Personnel performing the replacement tasks should use standard industry guidelines for working on equipment as
necessary. These include the following:
q Before starting any replacement procedure make sure that the kit to be used correctly matches the AirStar
model to be upgraded as listed below.
q Keep all attaching hardware and fastening screws together with the associated removed assembly.
Use separate storage containers or envelopes for each hardware group if necessary.
q Prior to removing any part or assembly, note location and orientation of assemblies being removed.
Figure 1. AirStar Filter Location
Important Information
Service Personnel All personnel servicing the AirStar must read and understand the Operator's Manual before
operating or performing any service of the unit. Only a trained technician from a qualified Air
Techniques dealer should perform any service.
Power Removal Never work on equipment connected to live power. Remove power by disconnecting mains
power to the unit prior to performing any replacement procedures.
Tank Pressure Prior to performing the replacement procedures, make sure to depressurize the storage tank.
Compressor
Air Intake Filters
(1 each cylinder head)
Membrane Dryer
Top Membrane
Filter
Bottom
Membrane Filter
DENTAL AIR SYSTEM
Preventative Maintenance Kits Supplied Components
AirStar Model
AS10 &
AS12
AS21, AS22
& AS30
AS40 AS50 AS70 AS100
Kit Part No 87351 87352 87355 87353 87354 87356
Component Part No. Qty Qty Qty Qty Qty Qty
Compressor Air Intake Filter 89938 1 2 3 4 6 8
Top Membrane Filter 87366 1 1 1 1 2 2
Bottom Membrane Filter 87367 1 1 1 1 2 2
Top Cover O-ring 87368 1 1 1 1 2 2
Filter Bowl O-ring 87369 1 1 1 1 2 2
87369
87367
87366
87368
89938 - See Table
for Kit Quantities
Top Membrane Filter Replacement -
1. Remove the Top Filter Cap from the Membrane Dryer assembly by
turning the cap counter clockwise.
2. Remove the Top Membrane Filter and discard.
3. Install the replacement Top Membrane Filter by carefully inserting the
filter over the nozzle.
4. Remove the Top Cover O-ring from the Top Filter Cap and discard.
5. Install the replacement Top Cover O-ring onto the Top Filter Cap.
6. Secure the Top Filter Cap to the Membrane Dryer assembly by turning
the cap clockwise until tight.
Bottom Membrane Filter Replacement -
1. Remove the Filter Bowl from the Membrane Dryer assembly by
carefully turning the bowl counter clockwise.
2. Remove the Bottom Membrane Filter from the Membrane Dryer
assembly by pushing the filter in while turning a quarter turn counter
clockwise. Discard the filter.
3. Install the replacement Bottom Membrane Filter into the Membrane
Dryer as follows:
a. Align the four filter grooves with the four locking tabs inside the
Membrane Dryer.
b. Push in on the filter while turning a quarter turn clockwise.
4. Remove the Filter Bowl O-ring from the bottom threads of the
Membrane Dryer assembly and discard o-ring.
5. Install replacement Filter Bowl O-ring onto the Membrane Dryer.
6. Make sure the Filter Bowl interior is empty of any moisture. Drain and
towel dry as necessary.
7. Install the dry Filter Bowl onto the Membrane Dryer by turning the bowl
clockwise until tight.
Compressor Air Intake Filter Replacement -
1. Using a slight twisting motion, carefully pull and remove the Compressor
Air Intake Filter with the sound reducer attached from the associated
compressor head. Discard the filter.
2. Install the replacement Compressor Air Intake Filter onto the sound
reducer.
Important: Use care when installing intake filter. The filter is made
of paper and can be damaged
3. Install the Compressor Air Intake Filter and sound reducer by care-
fully inserting the filter into the compressor head.
Operational Check -
Checking that the replacement AirStar compressor units with a Membrane Dryer Membrane Dryer are properly installed and the
AirStar under repair may be returned to service is easily accomplished by operating the compressor as normal and verifying
that the unit reaches approximately 115 PSI of pressure and then shuts off automatically.
Sound
Reducer
Compressor Air
Intake Filter
Compressor
Head
Membrane
Dryer
Assembly
Membrane
Dryer
Assembly
Top
Membrane
Filter
Top Cover O-ring
Filter Bowl
Filter Bowl
O-ring
Bottom
Membrane Filter
Bottom
Membrane
Filter
© Air Techniques, Inc. Copyright 2012 • P/N 87365, Rev. D • December 2016
Air Techniques, Inc.
1295 Walt Whitman Road
Melville, New York, USA 11747- 3062
Website: www.airtechniques.com
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