MICRO-AIR MA4210 User manual

This manual contains specific cautionary statements relative to worker safety. Read this manual thoroughly and follow
as directed. It is impossible to list all of the hazards of dust control equipment. It is important that use of the equipment
be discussed with a Micro-Air Representative. Persons involved with the equipment or systems should be instructed how
to operate in a safe manner.
MA4210
Installation and Operation Manual
MICRO AIR
www.microaironline.com

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MA4210 MICRO AIR
WARNINGS:
CAUTION: Installation can cause exposure to live components. Disconnect electrical power
before proceeding with installation. Proper Lock Out / Tag Out procedures should be used.
All electrical work must be done by a qualified electrician according to local, state and
national codes.
Improper installation or operation of this equipment can cause damage to equipment and /
or injury to personnel. The installation / operation manual must be read and followed in its
entirety.
MA4210 SPECIFICATIONS:
Motor:
1-1/2 HP, 1725 RPM, 1 Phase, TEFC
3 HP, 1760 RPM, 3 Phase, TEFC
Input Voltage:
1-Phase - 120V, 60 Hz
3-Phase - 230/460V, 60 Hz
Max Current:
1-Phase - 16 Amps
3-Phase - 8.4/4.2 Amps
Blower:
12-9 Belt Driven
Dimensions:
86"H x 26"W x 36"L
Shipping Weight:
444 lbs.
Actual Weight:
402 lbs.*
*Add 35 lbs. per charcoal module when selected.
PACKAGE CONTENTS:
1 Ea.
MA4210
16 Ea.
5/16-18 Bolt
1 Ea.
Owner's Manual
16 Ea.
5/16-18 Hex Nut
2 Ea.
Swivel Caster
16 Ea.
5/16" Flat Washer
2 Ea.
Fixed Caster
16 Ea.
5/16" Lock Washer
1 Ea.
Filter Hanger Bar
1 Ea.
Handle
EQUIPMENT / TOOLS REQUIRED:
Forklift or Hoist
Lifting straps or chains
Socket wrenches
Wire nuts

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MA4210 MICRO AIR
PRE-OPERATING INSTRUCTIONS:
1. Inspect the unit for any visible damage that may have occurred during shipment. Report any
damage to the delivery carrier.
2. Remove the shipping crate, shipping straps and plastic wrap from unit. Discard skid and hardware.
3. Open the filter door and remove the bag filter, pre-filter, hood, handle, and filter hanger bar.
4. Lay the unit down on its back (the side opposite the hose).
5. With the unit still in the horizontal position, secure the casters to the bottom of the unit using bolts,
nuts and washers provided.
6. Slide the pre-filter into the channels provided at the bottom of the unit making sure that the air flow
directional arrows are pointed upward.
7. Making sure that the loops on the filter are towards the door, carefully slide the bag filter back into
the cabinet. Do not snag or rip the delicate media material that is used to make this filter. When
properly inserted, the bag filter will not protrude past the filter slide and will allow the door to close
securely.
8. Insert the filter hanger bar through the loops in the inside the cabinet near the top of the filter door.
9. Close and latch the filter door.
10. Determine the location where the unit is to be installed. Be sure to allow sufficient access to the
unit for servicing and maintenance on all sides.
ELECTRICAL CONNECTIONS:
All electrical work must be done by a qualified electrician according to local, state and
national codes. Be sure that the designated circuit breaker is off until all wiring has been
completed.
NOTE: It is recommended that a properly sized motor starter and overload protector be used in the
supply circuit of the 3 Phase motor. The 120V units have thermally protected motors with on/off
switches.
1. Make electrical connections as shown in the wiring diagram to the wires protruding from the
conduit on the side of the unit.
2. Check blower for proper rotation direction. Blower should rotate clockwise when viewed from the
pulley end. If the blower rotates backwards, interchange two of the motor supply connections.
3. Check current draw of the motor. Do not exceed Amps specified.
PRE-OPERATING CHECKLIST:
Check blower drive belt for proper tension. Belt should deflect ¾” when firm pressure is applied
midway between the pulleys.
Check that motor, blower and drive pulleys are mounted securely.
Make sure that both corners of every pocket in the filter bag is supported by the filter support rods
and that filter support rods are fully engaged in their support brackets.
Air flow direction arrows on the pre-filters must point toward the blower.
Make sure all access panels removed during the installation are re-installed and the filter access
door is closed.

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MA4210 MICRO AIR
OPERATING INSTRUCTIONS:
1. Choose a suitable, level place near the workstation and position the unit so that the arm assembly
will be placed near the source of pollution being generated.
2. Grasp the hood by the handle ring and position within 18” of the source of pollution.
3. Connect power (stated above in ELECTRICAL CONNECTIONS).
4. Adjust the hood to capture the maximum amount of contaminants. Periodically adjust the position
of the hood to keep it in maximum capture range.
PRESSURE SWITCH ADJUSTMENT:
1. The pressure switch which turns the light on with a differential pressure increase, should be wired
to poles L1 (red) and L2 (blue) at the time of installation with 230/460 volt source (See Wiring
Diagram).
2. The pressure switch is preset at the factory to indicate (light on) dirty filters, but may need
readjustment due to a desire for earlier or later filter changes, a different combination of filters, or
because the set point shifted during shipping. The pressure switch is also orientation sensitive. To
re-adjust the switch, remove the hole plug in the side of the unit for access to the adjustment
screw. Make sure filters and pre-filters are installed in unit. Turn the unit on and place a piece of
cardboard over the intake covering about 80% to 85% of the intake area. With a standard
screwdriver, turn the adjustment screw clockwise until the light goes off, or counterclockwise until
the light comes on.
3. For more time between filter changes (less air flow), cover slightly more of the opening, and for
less time between filter changes (more air flow), cover less of the opening.
GENERAL MAINTENANCE:
Occasionally check the condition of the drive belt for tightness and wear.
Check the bower bearings for unusual wear and the blower wheel for debris and dirt. Clean when
necessary.
Check the wiring for loose connections or for cracked insulation.
No lubrication is required for the motor because it is a permanent pre-lube design. Excessive
dirt/oil should be periodically removed.
Once per month grease the suction arm base assembly with a bearing grease listed to not react
with aluminum.
CHANGING FILTERS:
Always make sure that the unit is turned off before changing filters or servicing the unit.
1. The MA4210 is equipped with a filter change light or optional Magnehelic Gauge. If the differential
pressure has been set properly the light or gauge signals the need for examination for the filters.
2. When the light comes on, or gauge reads high differential pressure, turn the unit off and remove
the pre-filter only. Replace with a new pre-filter, making sure that the air flow directional arrow is
pointed toward the outlet end. Turn the unit back on. If the filter change light is off, or the gauge
reads low differential pressure, then the unit is operating properly.

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MA4210 MICRO AIR
3. If the filter change light fails to go out, or the gauge continues to read high differential pressure
after replacing the pre-filter, then the media filter also needs to be replaced.
4. To install a new bag filter, turn the unit off. Remove the filter from the channel and insert a new
filter in place.
5. Start the unit. The filter change light should be off or gauge reads low differential pressure and the
unit should be operating properly.
AIR FLOW ADJUSTMENT:
Depending on the configuration, the MA4210 will be equipped with a variable diameter pulley on the
motor to allow the air flow to be adjusted to the installation requirements. The pulley is set for
maximum air flow from the factory. The air flow rate can be adjusted as follows:
1. Remove motor compartment access cover. Be careful to avoid tearing gasket material between
door and cabinet.
2. Remove belt.
3. Loosen pulley adjustment set screw on motor pulley and screw adjustable sheave out away from
fixed sheave. Tighten set screw onto flat of fixed screw (FIG. 1).
4. Adjusting the motor pulley may require a size larger or smaller belt, depending on the application.
5. Replace belt and check belt tension. Proper tension should be between 1/2” and 3/4” deflection
when belt is squeezed with normal pressure between fingers.
6. Replace motor compartment access cover.
7. Recheck for correct draw of motor amperage. NOTE: All filters and panels must be installed on
unit and door must be closed for current measurements of motor.
FIG. 1
Increase
Diameter
Decrease
Diameter
Set Screw
Fixed Sheave
Adjustable Sheave –Rotate by ½ Turn
Increments to Increase Pitch Diameter

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MA4210 MICRO AIR
INSTRUCTIONS FOR SIDE DISCHARGE BLOWER EXHAUST:
Read instructions completely before making changes. Due to relocation of internal
components, some wiring may be loose. Be sure to retain wires so they will not become
loose in air stream of blower inlet.
1. The MA4210 motor/blower module can be rotated so that the exhaust air exits from the side of the
unit. Before rotating the motor/blower module be sure that all input power is disconnected and the
unit is turned off.
2. Remove the motor access door and exhaust grille.
3. Remove 5/16” hex bolts and washers that secure the motor/blower module to the filter module.
4. Rotate the motor/blower module 90 deg. (FIG. 2).
5. Using 5/16” hex bolts and washers, re-secure the motor/blower module to the filter module.
6. Re-install motor access door and exhaust grille.
7. Reconnect input power and turn unit on. Check for proper air flow and blower rotation.
FIG. 2
Motor Access Door
Motor / Blower
Module
Filter Module
Filter Door

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MA4210 MICRO AIR
UNITS WITH HEPA OR CHARCOAL AS A SECOND MAIN FILTER:
On units with optional HEPA or charcoal
filters, an adjustable filter track kit is used to
complete the seal of the filters to the filter
stop (FIG. 3 & FIG. 4). If the unit was ordered
with either a HEPA or charcoal filter, the
adjustable filter track kit is included with the
unit. If a HEPA or charcoal filter is ordered as
an after-market item, the adjustable filter track
kit should be ordered as well. Order part
number 38036-01.
Each filter track kit is supplied with:
1 Ea.
Filter Track
2 Ea.
Supports
1 Ea.
Handle
4 Ea.
Retaining Brackets
1 Ea.
Door Stop Bracket
3 Ea.
Horizontal Support
16 Ea.
#8-32 Self Tapping Hex Screws
INSTALLATION:
1. Place supports in cabinet at a dimension of
13-1/4” and secure with self-tapping screws.
2. Place track in cabinet so it rests upon
supports and 1/2” diameter pin is located
behind brackets on supports.
3. Place handle on supports so that it rests in
notches.
4. Lock 1/2” diameter rods on handle and track
in place with brackets and self-tapping
screws.
5. Place handle stop bracket at a dimension of
15-1/2” and secure with self-tapping screws.
This is to keep handle from rotating past 90
degrees and allowing filter to loosen.
6. Horizontal support is not used in this
application.
FIG. 3
13”
RCM or HEPA
Door Removed
for Clarity
Support
Retaining
Brackets
Typ. (4)
Support
Filter Track
Handle
Door Stop
Bracket

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MA4210 MICRO AIR
UNITS WITH HEPA OR CHARCOAL AS A FIRST AND SECOND MAIN FILTER:
On units with optional HEPA or charcoal
filters, an adjustable filter track kit is used to
complete the seal of the filters to the filter
stop (FIG. 3 & FIG. 4). If the unit was ordered
with either a HEPA or charcoal filter, the
adjustable filter track kit is included with the
unit. If a HEPA or charcoal filter is ordered as
an after-market item, the adjustable filter track
kit should be ordered as well. Order part
number 38036-01.
Each filter track kit is supplied with:
1 Ea.
Filter Track
2 Ea.
Supports
1 Ea.
Handle
4 Ea.
Retaining Brackets
1 Ea.
Door Stop Bracket
3 Ea.
Horizontal Support
16 Ea.
#8-32 Self Tapping Hex Screws
INSTALLATION:
1. Place supports in cabinet at a dimension of
24-5/8” and secure with self-tapping screws.
2. Place track in cabinet so it rests upon
supports and 1/2” diameter pin is located
behind brackets on supports.
3. Place handle on supports so that it rests in
notches.
4. Lock 1/2” diameter rods on handle and track
in place with brackets and self-tapping
screws.
5. Place handle stop bracket at a dimension of
27” and secure with self-tapping screws.
This is to keep handle from rotating past 90
degrees and allowing filter to loosen.
6. Place horizontal supports (Typ. for two) on
sides of cabinet at a dimension of 10” and
the other horizontal support on rear cabinet
at 5” and secure with self-tapping screws.
FIG. 4
24-5/8”
10”
5”
RCM or HEPA
Horizontal
Support
Support
Door Stop
Bracket
Door Removed
for Clarity
Filter Track
Support
Retaining
Brackets
Typ. (4)

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MA4210 MICRO AIR
FILLING OF RCM MODULES:
1. Remove bulk charcoal or purasorb from the shipping container.
2. Set module on a level surface. Remove fill cover by removing six #10-32 Phillip head screws that
secure cover. Set cover aside (FIG. 5).
3. Open the lid of the charcoal or purasorb bucket. Pour the material from the plastic bag into the
module through the slots. It may be necessary to slightly shake the module to assure an even fill.
Excess material may be saved by resealing the bucket. Note that slow pouring will minimize dust
that will be present during filling.
4. After filling the module, discard the bucket and reinstall the fill cover removed in step 2.
5. With filter track in place and handle pulled out away from cabinet load RCM modules into track.
6. With filters in place rotate handle 90 deg. and lock filter modules in place.
NOTE: The MA4210 requires two modules when used as a second main filter and four modules
when used as a first and second main filter.
FIG. 5
Fill Cover
Pour Material
into Slots

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MA4210 MICRO AIR
OPTIONAL SILENCER INSTALLATION:
1. Remove exhaust grille from unit as shown in Fig. 6.
2. Slide silencer over blower assembly.
3. Align holes from silencer with those located on side of the blower assembly.
4. Attach silencer to blower assembly using 3/8” bolt, lock washer and flat washer.
5. Center exhaust grille over hole in silencer and attach using #8-32 self-tapping machine screws.
FIG. 6
#8-32 SMS
Exhaust Grille
Silencer
3/8” Hardware
Blower Assembly

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MA4210 MICRO AIR
WIRING DIAGRAM:
All electrical work must be done by a qualified electrician according to local, state and
national codes.
FIG. 7

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MA4210 MICRO AIR
TROUBLESHOOTING:
CAUTION: Before disassembling the unit or doing any inspecting of the parts, make certain
that the power has been cut off and the blower has come to a complete stop. NEVER run the
unit with the access door opened or the panels removed.
TABLE 1 –Troubleshooting Chart
PROBLEM
POSSIBLE CAUSE
REMEDY
Unit fails to start
No incoming power
Check the circuit and switch
Blown breaker or fuse
Replace fuse or throw breaker
Loose wire in terminal box
Reconnect wire
Burned out motor
Replace motor
Primary voltage to motor contactor
Take steps to increase voltage to primary
is below 10% tolerance
Motor thermal trip (1 Phase only)
Reset at motor
Tripped overload (3 Phase only)
Reset overload protector
Unit runs slowly,
Wired for wrong voltage
Check input voltage
Inadequate capture
Check wiring diagram
Improper rotation
Check wiring diagram
Switch L1 & L2 (3 Phase only)
Internal Obstruction
Check if damper is open
Check inlet for blockage
Check hoses for proper connection
Check hoses for holes
Pulleys set for improper static
Adjust or change pulleys
Dirty filters
Service/Replace filters
Vibration
Loose motor mounting bolts
Tighten bolts
Foreign objects in blower/
Remove debris from blower
Build-up on blower wheel
Dirty filters
Service/Replace filters
Mist coming from exhaust
Dirty disposable filters on torn filters
Service/Replace filters
Air bypass around filters
Check for proper seal against picture
frame and seals on door and back wall
Stronger resistance
Lack of grease in the rotating
Lubricate the rotating socket
during rotation of the arm
socket
Arm will not stay in place
Joints are loose
Tighten the joints

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MA4210 MICRO AIR
ARM ASSEMBLY PARTS LIST:
FIG. 8
ITEM
PART NO.
DESCRIPTION
ITEM
PART NO.
DESCRIPTION
1
P2466
6” Hood Assembly
13
P2479
½-13 Nyloc Hex Nut
P2469
8” Hood Assembly
14
P141
3/8-16 Hex Nut
2
P164
¼-20 x ¾” Hex Head Bolt
15
P142
3/8” Lock Washer
3
P246
¼” Flat Washer
16
P2206
Flat Washer
4
P2482
Hood Disc Pad
17
P2481
3/8-16 x 1-1/4” Carriage Bolt
5
P2485
¼-20 Nyloc Hex Nut
18
P2461
6” Gas Shock
6
37104-01
Damper Handle Stop Plate
P2462
8” Gas Shock
7
P2206
5/16” Flat Washer
19
P2483
¼-20 x 1” Hex Head Bolt
8
P2484
5/16-18 Nyloc Hex Nut
20
P2312
Micro Air Decal
9
37103-01
Damper Handle
21
P2232
Hose Clamp
10
P2478
½-13 X 2.25” Hex Head Bolt
22
P2491
6” Dia. Flex Hose
11
P2468
Cup Washer
P2617
8” Dia. Flex Hose
12
P2467
Friction Pad

14
MA4210 MICRO AIR
MA4210 ASSEMBLY PARTS LIST:
FIG. 9

15
MA4210 MICRO AIR
MA4210 ASSEMBLY PARTS LIST:
ITEM
PART NO.
DESCRIPTION
ITEM
PART NO.
DESCRIPTION
1
38027-01
Base Assembly
14
P2105
1-1/2HP Var. Pitch Dia. Motor Pulley
2
P3283
Swivel Caster
P3578
3HP, Var. Pitch Dia. Motor Pulley
P2724
Big Wheel
P3986
3HP, 7.75" Motor Pulley
3
P3284
Rigid Caster
15
P3545
1-1/2HP, 120V, 1 Phase Motor
4
38033-01
Spark Tray
P3495
3HP, 230/460V, 3 Phase Motor
5
33299-03
Spark Tray Door
N/S
30251-01
Mounting Bracket for P3495 Motor
6
P1809
Foam Gasket
16
38011-02
Motor Access Door
7
P1856
Spark Tray Door Latches
17
P1032
Access Door Gasket
P1857
18
P1372
Latch
P1858
19
38022-01
Filter Access Door
8
30473-01
Handle
20
33346-02
Filter Rod
9
38070-01
Cabinet Assembly
21
P3505
Pressure Switch
10
P3498
Blower
22
P3206
On/Off Switch (120V Only)
11
38010-01
Blower Access Panel
23
P1363
Cord Set (120V Only)
12
P1495
42" Belt
24
P3214
Seal Gasket
P3207
43" Belt
26
P1429
Light (120V)
P3550
49" Belt
P1481
Light (230V, 460V)
P7135
51" Belt
N/S
P3547
Wiring Diagram
13
P1710
4.95" Blower Pulley
N/S
P2250
Magnehelic Gauge
P1504
5.45" Blower Pulley
N/S
38050-01
Silencer
P1974
6.25" Blower Pulley
N/S
38036-01
Filter Track
P3218
8.00" Blower Pulley
P3270
9.75" Blower Pulley
REPLACEMENT FILTER LIST:
PART NO.
DESCRIPTION
PART NO.
DESCRIPTION
P1411
24" x 24" x 4" Pleated Pre-Filter
P1586*
24" x 24" x 2" 96% Washable Pre-Filter
P1439
24" x 24" x 32" 55% Bag Filter
P1799*
24" x 24" x 2" Baffle Oil Impinger
P1442
24" x 24" x 32" 95% Bag Filter
P2101
24" x 24" x 12" 99.97% DOP HEPA
P1455
24" x 24" x 12" 95% DOP HEPA
P2104
24" x 24" x 32" 95% Duo Cube Bag Filter
P1460
24" x 24" x 15" 95% Short Bag Filter
P2179
24" x 24" x 32" 95% Oil Mist Bag Filter
P1461*
24" x 24" x 2" Pleated Pre-Filter
33740-00
Refillable Module
P1475*
24" x 24" x 2" Mesh Oil Impinger
P1450 - Purasorb Media
P1585*
24" x 24" x 2" 70% Washable Pre-Filter
P1823 - Charcoal Media
*NOTE: 2” Pre-Filters must be used in combination to fill 4” channel.

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MA4210 MICRO AIR
Notes:
Serial Number:
Supply Voltage:
Date Installed:
Installed By:
L1468
10/23