Powerex SEO40073HP, STD050334HP User Manual

Scroll Air Compressor Service and Maintenance

Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product
described. Protect yourself and others by observing all safety information. Failure to comply with instructions could result in
personal injury and/or property damage! Retain instructions for future reference.

Description

The Powerex Oilless Rotary Scroll Air Compressor has
advanced scroll compressor technology through the
development of a completely oilless unit.

The Powerex Scroll Compressor offers a dynamically balanced
air end which insures vibration-free operation. The rotary
design permits a continuous 100% duty cycle. No oil
separation, oil fi ltration, or inlet valves are required on the
Powerex Scroll air compressor.

The Powerex oilless rotary scroll air compressor is based on
the theory of scroll compression. A scroll is a free standing,
intricate spiral bounded on one side by a solid, fl at plane or
base. A scroll set, the basic compression element of a scroll
compressor, is made up of two identical spirals which form
right and left hand parts. One of these scroll components
is indexed or phased 180° with respect to the other so the
scrolls can mesh.

Crescent-shaped gas pockets are formed and bounded by
the spirals and the base plate of both scrolls. As the orbiting
scroll is orbited around the fi xed scroll, the pockets formed
by the meshed scrolls follow the spiral toward the center and
diminish in size. The orbiting scroll is prevented from rotating
during this process so the 180° phase relationship of the scrolls
is maintained. The compressor’s inlet is at the outer boundary
of the scrolls. The compressed gas is discharged through the
outlet at the center of the fi xed scroll so no valves are needed.

Specifi cations

Product SLAE03EB, SLAE05E, SLAE05EHP

Discharge Pressure

Compression Cycle Scroll

Operating Temperature
Range

95-115 psi
(125-145 psi optional)

32°F to 104°F

Safety Guidelines

This manual contains information that is very important
to know and understand. This information is provided for
SAFETY and to PREVENT EQUIPMENT PROBLEMS. To help
recognize this information, observe the following symbols.

Danger indicates an imminently

hazardous situation which, if not avoided,

WILL result in death or serious injury.

Warning indicates a potentially

hazardous situation which, if not avoided,

COULD result in death or serious injury.

Caution indicates a potentially

minor or moderate injury.

NOTE: This provides information that requires special attention.

Powerex • 150 Production Drive • Harrison, OH 45030 • USA
1-888-769-7979 • www.powerexinc.com

Breathable Air Warning

This compressor/pump is NOT equipped and should NOT
be used “as is” to supply breathing quality air. For any
application of air for human consumption, you must fi t
the air compressor/pump with suitable in-line safety and
alarm equipment. This additional equipment is necessary
to properly fi lter and purify the air to meet minimal
specifi cations for Grade D breathing as described in
Compressed Gas Association Commodity Specifi cation
G 7.1 - 1966, OSHA 29 CFR 1910. 134, ANSI and/or Canadian
Standards Associations (CSA).

DISCLAIMER OF WARRANTIES
IN THE EVENT THE COMPRESSOR IS USED FOR THE PURPOSE

OF BREATHING AIR APPLICATION AND PROPER IN-LINE
SAFETY AND ALARM EQUIPMENT IS NOT SIMULTANEOUSLY
USED, EXISTING WARRANTIES ARE VOIDED, AND POWEREX
DISCLAIMS ANY LIABILITY WHATSOEVER FOR ANY LOSS,
PERSONAL INJURY OR DAMAGE.

IN557305AV 1/14

Scroll Air Compressor Service and Maintenance

Maintenance

3. Use a grease gun extension adaptor to engage the

DRY TYPE INLET FILTER

2500 Hours - Maintenance

The inlet fi lter on the scroll compressor assures 99%
particulate free air is admitted to the unit. Change every
2,500 hours or more often in dirty locations.

1. Remove fi lter cover.

Do not attempt to clean fi lter. This fi lter

requires replacement and is to be replaced

when contaminated.

2. Install new fi lter element and reassemble cover.

CLEAN COMPRESSOR FINS

2500 Hours - Maintenance

1. Remove the FS cover (see page 6).

2. Clean compressor fi ns using compressed air.

3. Put the FS cover back.

Use only Powerex genuine grease. Pump

air from the grease passage of the extension adapter.

4. Replace plastic dust cap.

Greasing Pin Crank Bearings

The bearings on the scroll compressor are regreaseable to
allow extended compressor life. Service should be performed
according to the Maintenance Schedule on Page 2.

1. Remove the fan duct (2), part number 5 on Pages 6 and 7.

2. Remove the nuts and bolts and then the fi xed scroll (FS)

3. Grease all three pin crank bearings (See Figure 2 below

grease fi tting and supply the proper volume of grease
as indicated on the grease delivery chart (See Grease
Delivery chart on Page 2 and on Figure 1).

grease gun before feeding. This eliminates

from the air end.

and Grease Delivery Chart on page 2).

GREASE COMPRESSOR BEARINGS

10,000 Hours - Maintenance

Per OSHA regulations, ALL power must

be locked out before performing any

maintenance.

This service should be performed by an

authorized Powerex Service Center to

avoid failure.

OS Bearing

1. Remove the plastic dust cap (See Figure 1).

2. Rotate the compressor pulley until the grease fi tting is
visible through the dust cap hole (See Figure 1). This will
allow regreasing of the OS bearing.

Grease Gun

Plastic Dust
Cap

Grease
Fitting

Grease Fittings
for pin crank
bearings

Figure 2

4. Replace the fi xed scroll and fan duct (2). See the Bolt
Torques chart on page 5.

TIP SEAL SET REPLACEMENT

Key Way

Figure 1

Extension
Adapter

Counter
Weight

5,000 / 10,000 hours - Maintenance

Per OSHA regulations, ALL power must

be locked out before performing any

maintenance.

The “Tip Seal Set” is a replacement part for SLAE03EB,
SLAE05E, and SLAE05EHP air ends. Please read these
instructions thoroughly and carefully to ensure correct
replacement.

2

Scroll Air Compressor Service and Maintenance

Maintenance (continued)

NOTE: Replace tip seal on SLAE03EB and SLAE05EHP at 5,000

hours when operated at 145 psig.

The tip seal on the scroll compressor is self-lubricated
and allows the unit to operate effi ciently without oil and
expensive fi ltration. The tip seal should be replaced every
10,000 hours of operating @ 115 psig.

Confi rmation of the Parts

1. Confi rm if the tip seal set you purchased is correct for the
air end you are repairing. See part number 12 on Page 7
for tip seal set and corresponding pump model number.
One tip seal set contains all of the items in Figure 3
below.

Item
No. Description Qty.

1 HP tip seal for FS 1
2 LP tip seal for FS 1
3 HP tip seal for OS 1
4 LP tip seal for OS 1
5 Dust Seal 1
6 Backup Tube 1

HP= High Pressure LP= Low Pressure
FS= Fixed Scroll OS- Orbital Scroll

Replacement

1. Remove the FS nuts and bolts and then FS set from air
end.

2. Remove LP and HP tip seals from Fixed Scroll set and
Orbit scroll set. Using the tip of a ball-point pen at the
start will make it much easier to remove (See Figure 4).

Tip Seal Removal

Figure 4

3. Remove all dust from the Scroll wraps and tip seal groove
with clean cloth or compressed air before inserting the
new tip seals.

2. Confi rm if the following parts are included (See Figure 3).

12 5 643

Figure 3

NOTE: In order to distinguish between the tip seal for Fixed

Scroll and the tip seal for Orbit Scroll place the tip seal as
shown below then view from the arrow direction and refer
to the fi gure below.

Lip

(Inside)

Lip

(Bottom Side)

Fixed Scroll

Facing
Left

Orbit Scroll

Facing

Right

3

Scroll Air Compressor Service and Maintenance

Maintenance (continued)

Inserting tip seals

NOTE: Tips seals for Fixed Scroll and Orbit Scroll have opposing
seal cut angles (See NOTE and explanatory diagram below).

Insert tip seal so that the lip of tip seal is on the bottom of
seal groove and inner side of involute and the direction of lip
faces the center of involute (curving spiral). See Figure 5. This
is to be done for both FS and OS sets.

Lip Direction

Enter
side

Lip Side

Lip Surface
(Inside)

Figure 5

(Grooved bottom)

3. Repeat the same procedure for FS or Fixed Scroll tip seal
set, remove both the dust seal and backup tube located
on outermost side FS set.

4. Insert new backup tube in the FS Scroll in the 6 o’ clock
position (See Figure 8).

Dust Seal

Use caution not to tear or distort lip.

1. Insert new HP tip
seal from the center
section for OS or Orbit
Scroll so that there
will be no clearance at
the tip (start) section
(See Figure 5 and 6).

2. Insert so that new LP
tip seal will contact
closely with HP tip
seal inside Scroll
Groove (See Figure 4
on page 4).

Insert approximately half of the LP tip

seal and remove the tip seal to confi rm
that a notch in the tip seal has been created. This will prevent
movement during installation (See Figure 7).

Figure 6

Figure 8

5. Insert new dust seal on the backup tube.

6. After replacing tip seal set, reassemble Fixed Scroll set
to the Orbit Scroll. Tighten nuts and bolts temporarily
and confi rm if crankshaft rotates smoothly by hand and
tighten them fi rmly. Tightening torques are:

Bolt
Torque First Second

SLAE03EB 17 in lb. 265 in lb.

SLAE05E / SLAE05EHP 17 in lb. 265 in lb.

NOTE: Assemble so that dust seal and tip seal will not drop
between Orbit Scroll set and Fixed Scroll set.

Back-up Tube

Figure 7

Machined

To Avoid Movement

During Installation

4