Micro-air Om550dd User manual

AIR CLEANERS

OM55ODD

OWNER’S MANUAL

CAUTION

READ COMPLETE INSTRUCTIONS BEFORE OPERATING.

PLEASE FILE FOR FUTURE REFERENCE.

2

MODEL OM550DD SPECIFICATIONS

Input Volts: 120 VAC, Single Phase

230 VAC, Single Phase

208-230/460 VAC, 3 Phase

Max. Current: 1/2 HP 120 VAC 7.6 AMPS

1/2 HP 230 VAC 3.8 AMPS

1/2 HP 208/230/460 VAC 2.6/2.0/1.0 AMPS

3/4 HP 120 VAC 10 AMPS

3/4 HP 230 VAC 5 AMPS

3/4 HP 208/230/460 VAC 2.8-2.4/1.2 AMPS

Motor: 1/2 HP TEFC Single Phase

1/2 HP TEFC 3-Phase

3/4 HP TEFC Single Phase

3/4 HP TEFC 3-Phase

Air Flow*: 6” inlet 450CFM (1/2 HP Motor)

6” inlet 600CFM (3/4 HP Motor)

Dimensions: 31 3/8” H x 20” W x 14” D (less Brackets)

40” H x 20” W x 14” D (with Brackets)

Shipping Weight: 136 lbs.

Actual Weight: 116 lbs.

*All airflows are tunnel-tested readings.

PACKAGE CONTENTS

1ea. OM550DD Unit

2ea. Machine Mount/Hangar Brackets

1ea. Owner’s Manual

PRE-OPERATING INSTRUCTIONS

1. Remove OM550DD unit and mounting brackets (not

assembled) from crate packaging.

2. Inspect unit for shipping damage and report any damage

to freight carrier.

INSTALLATION INSTRUCTIONS

A. MACHINE MOUNT / FLOOR MOUNT

1. Remove two 5/16” bolts from each side of cabinet

near the bottom of the unit

FIG.1

2. Use the bolts removed in Step 1 to secure Machine

Mounting brackets to unit as shown in FIG.1.

3. Locate an installation site that will provide for the

following:

A solid structure capable of supporting the weight

of the unit.

Three feet of unobstructed exhaust space from

the outlet of the unit.

Easy access to service panels and unit inlet. As

near as possible to the source of the oil mist unit

to be captured.

4. Mark location of the mounting holes on the surface to

which unit is to be mounted, (see FIG.2 for hole

pattern). Drill or punch holes that are sized for

mounting hardware to be used.

FIG.2

5. Lift OM550DD unit onto machine, aligning machine

mount brackets over mounting holes previously

drilled. Secure to machine using standard bolts, nuts

and lock washers.

CAUTION: The size and weight of the OM550DD requires

two persons or mechanical means to lift and hold during

mounting.

6. Connect unit to oil mist source using a duct having the

same diameter as the inlet of the unit. The duct may

be flexible hose or formed sheet metal. Maximum flow

will be obtained with minimum bends in duct. To

contain oil that will collect on the inside of the duct,

the duct must be sealed. Use hose clamps or sheet

metal screws to attach duct to unit.

B. CEILING MOUNTING

NOTE: The Machine Mount/Hangar Brackets used in Section

A may be used for suspension mounting purposes.

1. Remove the two 5/16” bolts from each side of the

cabinet at the outlet end.

2. Use the bolts removed in Step 1 to secure the ceiling

mount brackets to the unit as shown in FIG.3.

3. Locate an installation site that will meet the

requirements listed in Step 3 of the machine mounting

instruction.

3

FIG.3

4. Firmly secure four lengths of 3/8” threaded rod to a

firm structural support. Space rods to match pattern

made by holes in top of mounting brackets.

5. Thread one nut onto each rod.

CAUTION: The size and weight of the OM550DD requires

two persons or mechanical means to lift and hold during

mounting.

6. Raise the unit up to threaded rods and insert rods

through mounting brackets. Thread a second nut onto

each rod from below bracket.

7. Level unit by tightening the nuts against the mounting

bracket.

8. Thread a third nut onto each rod and tighten against

the second nut to prevent loosening of nuts due to

vibration.

9. Connect the unit to the oil mist source as explained in

Step 6 of the machine mounting instructions.

OIL DRAINAGE

NOTE: Should captured oil be disposed of, make sure to follow

local codes.

Provision for draining oil from unit is provided for by a 1” NPT

pipe coupling on the bottom of the unit. Drainage should be

piped to a central collection system. A shut-off valve or drain

trap is required to prevent air bypass through the drain

opening. The drain system shown in FIG.4 should be used.

Drain connections and lines are not provided.

NOTE: If a shut-off valve is installed in the drain system, the

unit must be emptied regularly to prevent oil from overflowing

into the intake duct.

ELECTRICAL CONNECTIONS

A. SINGLE PHASE 120 VOLT

Be certain that the system ON/OFF switch is in the OFF

position. Plug the power cord into the nearest outlet rated

for 120 volts.

FIG.4

B. THREE PHASE 208-230/460 VOLT

1. Conduit electrical connections should be made by a

qualified electrician, and must comply with local

electrical codes.

CAUTION: Be sure that the designated circuit breaker is

off until all wiring has been completed.

NOTE: It is recommended that a motor starter/protector be

used in the supply circuit to this unit. See Wiring Diagram

FIG.5.

2. Make electrical connections to the input wires as

shown in Wiring diagram FIG.5 for three phase wire

connections.

3. Check blower motor for proper rotation direction. The

blower should rotate clockwise when viewed from the

motor side. If the blower rotates backwards,

interchange two of the power connection wires (L1 &

L2).

4. Confirm proper rotation.

NOTE: 3PH Motor supplied with unit is not thermally protected.

A motor starter is recommended for proper installation. Prior to

running measure motor current and verity that it does not

exceed F.L.A rating of motor.

PRE-OPERATION CHECKLIST

Before placing unit in service, check the following items:

Check that motor and blower are mounted securely.

Make sure that both corners of every pocket in the filter

bag are supported by the filter support rod and that the

filter support rods are fully engaged in their support

brackets.

Airflow direction arrows on the oil impinge must point

toward the blower.

Check that air intake and oil drain connections are air and

oil tight.

Make sure that the filter access door is closed into proper

position and that door seals are compressed.

Check oil drain connections to unit and reservoir (Not

included).

Unit is now ready to be placed in service.

4

OPERATION

1. Once all electrical and drain connections have been made

turn unit on.

2. No lubrication is required for the motor because it is a

permanent pre-lube design. Excessive dirt/oil should be

removed.

3. Make sure oil is draining easily through drain pipe.

CHANGING FILTERS

CAUTION: Always make sure that the unit is turned off

before changing filters or servicing the unit.

1. The OM550DD may be equipped with an optional

Minihelic Gauge, which may be used to indicate when filter

needs to be replaced.

2. Initially, the Minihelic Gauge will register a very small

pressure drop across the filters (change in pressure varies

with filter combination used). After continued operation,

airflow will be reduced and the Minihelic Gauge will

measure increased pressure.

NOTE: Record pressure reading for future reference.

3. Minihelic Gauge will measure increased pressure.

4. When the gauge reads high differential pressure, turn the

unit off and remove the impinger pre-filter form the unit.

Wash the pre-filter in a detergent solution to remove dirt

and oil residue.

5. Rinse the pre-filter thoroughly with water, shake dry and

replace it into the with airflow direction pointing to the

blower.

6. Turn on the unit. If gauge continues to read high,

differential pressure, after replacing the pre-filter, then the

pleated oil filter may also need to be replaced.

7. Visually inspect the pleated oil filter. IF the pockets are

loaded with oil and dirt, then remove the filter from the unit

and insert a new filter.

8. Start the unit. The gauge should read low differential

pressure, and the unit operating properly.

GENERAL MAINTENANCE

1. Occasionally check the condition of the door seals for any

leaks. Replace if necessary.

2. Check the blower bearings for unusual wear and the

blower wheel for debris and dirt. Clean when necessary.

3. Check the wiring for loose connections or cracked

insulation.

4. No lubrication is required for the motor because it is a

permanent pre-lube design. Excessive dirt/oil should be

periodically removed.

5. Make sure that oil is draining easily through drain pipe.

TROUBLESHOOTING CHART

CAUTION: Before disassembling the unit or doing any inspection 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 open or removed.

PROBLEM POSSIBLE CAUSE REMEDY

Unit fails to start Dead power line Check the circuit and switch

Blown fuse Replace fuse

Loose wire in terminal box Reconnect wire

Burned out motor Replace motor

Unit runs slowly Wired for wrong voltage Check input voltage

Inadequate capture Improper rotation Check wiring diagram

Dirty filters Service filters

(see Changing Filters Section)

Obstruction in hose/arm Reach into hood and remove obstruction

Vibration Loose mounting bolts Tighten bolts

Foreign objects in blower Remove access door and remove objects

Dirty disposable filters Service filters

Obstructions in hose/arm assembly Reach into hood and remove obstruction

5

FIG.5

6

OM550DD

PARTS LIST

ITEM

PART NO.

DESCRIPTION

ITEM

PART NO.

DESCRIPTION

1.

34451-01

Cabinet Weldment

9.

P3027

1/2 HP Blower Assy.

2.

34461-01

Mounting Bracket

P3028

3/4 HP Blower Assy.

3.

34462-01

Door

10.

39036-01

Minihelic Gauge Kit

4.

30473-01

Door Handle

11.

34465-01

Gauge Cover Plate (Not Shown)

5.

34459-01

Top Plate

12.

P1363

115/230VAC Power Cord (Not Shown)

6.

P3649

4-Prong Knob

13.

P3029

120VAC Switch (1-Phase Only)

7.

P3020

1/2 HP 115/230VAC 1-Phase Motor

14.

30386-02

Switch Plate (1-Phase Only)

P3023

1/2 HP 208-230/460VAC 3-Phase Motor

15.

P3025

Electrical Box (1-Phase Only)

P7122

3/4 HP 115/230VAC 1-Phase Motor

P3021

3/4 HP 208-230/460VAC 3/Phase Motor

8.

34460-01

Spacer Plate 450 CFM

34460-02

Spacer Plate 550 CFM

FILTER OPTIONS

P3032

95% Pleated Filter

P3033

3" Mist-X Pre-filter

P3036

2" Baffle Pre-filter

P3035

2" Mesh Pre-filter

P3034

1" Mesh Pre-filter

P3038

Maxi Grid Pre-filter

7

NOTES

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8

NOTES

_____________________________________________________________________

Products of Metal-Fab Inc.

P.O. Box 1138 •Wichita KS 67201

(316) 943-2352 •FAX (316) 943-2717

MICRO-AIR OM550DD User manual

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