Ametek DR623 User manual

Your Choice. Our Commitment.
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SERVICE AND PARTS MANUAL
FOR
BLOWER MODEL
DR623, DR823, DR1223
DIRECT DRIVE
REGENERATIVE BLOWER
AMETEK Dynamic Fluid Solutions
100 East Erie St., Kent, Ohio 44240
Telephone: [phone] Fax: [phone]
email: [e-mail]
internet: www.ametekdfs.com

1 Revised – June 2016
                                       
                            
 
AMETEK Dynamic Fluid Solutions
100 East Erie St., Kent, Ohio 44240
Telephone: [phone] Fax: [phone]
email: [e-mail]
internet: www.ametekdfs.com
1. AMETEK Rotron DR, EN and HiE regenerative direct drive blowers are guaranteed for one full
year from the date of installation (limited to 18 months from the date of shipment) to the original
purchaser only. Should the blower fail we will evaluate the failure If failure is determined to be
workmanship or material defect related, we will at our option repair or replace the blower.
2. AMETEK Rotron Minispiral, Revaflow, Multiflow, Nautilair, remote drive blowers, moisture
separators, packaged units, CP blowers, Nasty Gas™ models and special built (EO) products are
guaranteed for one full year from date of shipment for workmanship and material defect to the
original purchaser only. Should the blower fail, If failure is determined to be workmanship or
material defect related, we will at our option repair or replace the blower.
3. Parts Policy - AMETEK Rotron spare parts and accessories are guaranteed for three months from
date of shipment for workmanship and material defect to the original purchaser only. If failure is
determined to be workmanship or material defect related we will at our option repair or replace the
part.
Corrective Action - A written report will be provided indicating reason(s) for failure, with suggestions
for corrective action. Subsequent customer failures due to abuse, misuse, misapplication or repeat
offense will not be covered. AMETEK Rotron will then notify you of your options. Any failed unit that is
tampered with by attempting repair or diagnosis will void the warranty, unless authorized by the
factory.
Terms and Conditions - Our warranty covers repairs or replacement of regenerative blowers only,
and will not cover labor for installation, outbound and inbound shipping costs, accessories or other
items not considered integral blower parts. Charges may be incurred on products returned for reasons
other than failures covered by their appropriate warranty. Out-of-warranty product and in warranty
product returned for failures determined to be caused by abuse, misuse, or repeat offense will be
subject to an evaluation charge. Maximum liability will in no case exceed the value of the product
purchased. Damage resulting from mishandling during shipment is not covered by this warranty. It is
the responsibility of the purchaser to file claims with the carrier. Other terms and conditions of sale are
stated on the back of the order acknowledgement.
Installation Instructions for SL, DR, EN, CP, and HiE Series Blowers
1. Bolt It Down - Any blower must be secured against movement prior to starting or testing to
prevent injury or damage. The blower does not vibrate much more than a standard electric motor.
2. Filtration - All blowers should be filtered prior to starting. Care must be taken so that no foreign
material enters the blower. If foreign material does enter the blower, it could cause internal
damage or may exit at extremely high velocity.
Should excessive amounts of material pass through the blower, it is suggested that the cover(s)
and impeller(s) be removed periodically and cleaned to avoid impeller imbalance. Impeller

2 Revised – June 2016
imbalance greatly speeds bearing wear, thus reducing blower life. Disassembling the blower will
void warranty, so contact the factory for cleaning authorization.
3. Support the Piping - The blower flanges and nozzles are designed as connection points only and
are not designed to be support members.
Caution: Plastic piping should not be used on blowers larger than 1 HP that are operating near
their maximum pressure or suction point. Blower housing and nearby piping
temperatures can exceed 200ºF. Access by personnel to the blower or nearby piping
should be limited, guarded, or marked, to prevent danger of burns.
4. Wiring - Blowers must be wired and protected/fused in accordance with local and national
electrical codes. All blowers must be grounded to prevent electrical shock. Slo-Blo or time delay
fuses should be used to bypass the first second of start-up amperage.
5. Pressure/Suction Maximums - The maximum pressure and/or suction listed on the model label
should not be exceeded. This can be monitored by means of a pressure or suction gage (available
from Rotron), installed in the piping at the blower outlet or inlet. Also, if problems do arise, the
Rotron Field representative will need to know the operating pressure/suction to properly diagnose
the problem.
6. Excess Air - Bleed excess air off. DO NOT throttle to reduce flow. When bleeding off excess air,
the blower draws less power and runs cooler.
Note: Remote Drive (Motorless) Blowers - Properly designed and installed guards should be used
on all belts, pulleys, couplings, etc. Observe maximum remote drive speed allowable. Due to the
range of uses, drive guards are the responsibility of the customer or user. Belts should be
tensioned using belt gauge.
Maintenance Procedure
When properly piped, filtered, and applied, little or no routine maintenance is required. Keep
the filter clean. Also, all standard models in the DR, EN, CP, and HiE series have sealed
bearings that require no maintenance. Bearing should be changed after 15,000 to 20,000
hours, on average. Replacement bearing information is specified on the chart below.
Bearing
Part Number Size Seal Material Grease Heat Stabilized
510217
510218
510219
205
206
207
Polyacrylic
Nye Rheotemp 500
30% +/- 5% Fill Yes – 325 F
510449
516440
516648
203
202
307
Buna N Exxon Polyrex Grease NO
516840
516841
516842
516843
516844
516845
516846
516847
206
207
208
210
309
310
311
313
Buna N Exxon Polyrex Grease NO

3 Revised – June 2016
Troubleshooting
POSSIBLE CAUSE OUT OF WARRANTY REMEDY ***
IMPELLER DOES NOT
TURN
Humming Sound
1. * One phase of power line not connected
2. * One phase of stator winding open
3. Bearings defective
4. Impeller jammed by foreign material
5. Impeller jammed against housing or cover
6. ** Capacitor open
1. Connect
2. Rewind or buy new motor
3. Change bearings
4. Clean and add filter
5. Adjust
6. Change capacitor
No
Soun
d
1. * Two phases of power line not connected
2. * Two phases of stator winding open
1. Connect
2. Rewind or buy new motor
IMPELLER TURNS
Blown
Fuse
1. Insufficient fuse capacity
2. Short circuit
1. Use time delay fuse of proper
rating
2. Repair
Motor Overheated Or
Protector Trips
1. High or low voltage
2. * Operating in single phase condition
3. Bearings defective
4. Impeller rubbing against housing or cover
5. Impeller or air passage clogged by foreign material
6. Unit operating beyond performance range
7. Capacitor shorted
8. * One phase of stator winding short circuited
1. Check input voltage
2. Check connections
3. Check bearings
4. Adjust
5. Clean and add filter
6. Reduce system pressure/vacuum
7. Change capacitor
8. Rewind or buy new motor
Abnormal
Sound
1. Impeller rubbing against housing or cover
2. Impeller or air passages clogged by foreign
material
3. Bearings defective
1. Adjust
2. Clean and add filter
3. Change bearings
Performance
Below Standard
1. Leak in piping
2. Piping and air passages clogged
3. Impeller rotation reversed
4. Leak in blower
5. Low voltage
1. Tighten
2. Clean
3. Check wiring
4. Tighten cover, flange
5. Check input voltage
* 3 phase units
** 1 phase units
*** Disassembly and repair of new blowers or motors will void the Rotron warranty. Factory should be contacted
prior to any attempt to field repair an in-warranty unit.
Blower Disassembly:
WARNING: Attempting to repair or diagnose a blower may void Rotron’s warranty. It may also
be difficult to successfully disassemble and reassemble the unit.
1) Disconnect the power leads. CAUTION: Be sure the power is disconnected before doing any work
whatsoever on the unit.
2) Remove or separate piping and/or mufflers and filters from the unit.
3) Remove the cover bolts and then the cover. NOTE: Some units are equipped with seals. It is
mandatory that these seals be replaced once the unit has been opened.
4) Remove the impeller bolt and washers and then remove the impeller. NOTE: Never pry on the
edges of the impeller. Use a puller as necessary.
5) Carefully note the number and location of the shims. Remove and set them aside. NOTE: If the
disassembly was for inspection and cleaning the unit may now be reassembled by reversing the
above steps. If motor servicing or replacement and/or impeller replacement is required the same
shims may not be used. It will be necessary to re-shim the impeller according to the procedure
explained under assembly.

4 Revised – June 2016
6) Remove the housing bolts and remove the motor assembly (arbor/.housing on remote drive
models).
7) Arbor disassembly (Applicable on remote drive models only):
a) Slide the bearing retraining sleeve off the shaft at the blower end.
b) Remove the four (4) screws and the bearing retaining plate from the blower end.
c) Lift the shaft assembly far enough out of the arbor to allow removal of the blower end snap
ring.
d) Remove the shaft assembly from the arbor.
e) If necessary, remove the shaft dust seal from the pulley end of the arbor.
Muffler Material Replacement:
1) Remove the manifold cover bolts and them manifold cover.
2) The muffler material can now be removed and replaced if necessary. On blowers with fiberglass
acoustical wrap the tubular retaining screens with the fiberglass matting before sliding the muffler
pads over the screens.
3) Reassemble by reversing the procedure.
NOTE: On DR068 models with tubular mufflers it is necessary to remove the cover and
impeller accessing the muffler material from the housing cavity.
Blower Reassembly:
1) Place the assembled motor (assembled arbor assembly for remote drive models) against the rear
of the housing and fasten with the bolts and washer.
2) To ensure the impeller is centered within the housing cavity re-shim the impeller according to the
procedure outlined below.
3) If blower had a seal replace the seal with a new one.
4) Place the impeller onto the shaft making sure the shaft key is in place and fasten with the bolt,
washer and spacer as applicable. Torque the impeller bolt per the table below. Once fastened
carefully rotate the impeller to be sure it turns freely.
5) Replace the cover and fasten with bolts.
6) Reconnect the power leads to the motor per the motor nameplate.
Bolt Size Torque
Pound-Force-Foot
1/4-20 6.25 +/- 0.25
5/16-18 11.5 +/- 0.25
3/8-16 20.0 +/- 0.5
½-13 49.0 +/- 1
5/8 –11 90.0 +/- 2

5 Revised – June 2016
Impeller Shimming Procedure:
WARNING: This unit may be difficult to shim. Extreme care may be exercised.
Tools Needed:Machinist’s Parallel Bar
Vernier Caliper with depth measuring capability
Feeler gauges or depth gauge
Measure the Following:
Distance from the flange face to the housing (A)
Distance from the flange face to the motor shaft shoulder (B)
Impeller Thickness (C)
Measurements (A) and (B) are made by laying the parallel bar across the housing flange face and
measuring to the proper points. Each measurement should be made at three points, and the average
of the readings should be used.
Shim Thickness = B – (A+C)/2
After the impeller installation (step #4 above) the impeller/cover clearance can be checked with feeler
gauges, laying the parallel bar across the housing flange face. This clearance should nominally be
(A-C)/2.
C
B
A

7
A. 1
∅
∅∅
∅
, 6 WIRE
115 VAC 230 VAC
1 1 LINE
3 LINE 2
5
3
2
5
4 LINE 4
LINE
8
8
INTERCHANGE LEADWIRES 5 & 8 to REVERSE ROTATION
B. 1
∅
∅∅
∅
, 7 WIRE
115 VAC 230 VAC
1
LINE 1 LINE
3
2
2 3
4 LINE
4
8 LINE
8
5
5
9
9
INTERCHANGE LEADWIRES 5 & 8 to REVERSE ROTATION
C. 3
∅
∅∅
∅
, 9 WIRE
230 VAC 460 VAC
LINE
1 LINE 1
LINE
7 2
LINE
3
2 LINE
8 4
7
3 LINE
9 5
8
4
5 6
6 9
INTERCHANGE ANY TWO LEAD LINES TO REVERSE ROTATION
D. 1
∅
∅∅
∅
, EMERSON 1/8 HP MOTOR
115 VAC 230 VAC
P1/BLUE LINE P1/BLUE LINE
P2/BROWN 5/BLACK
5/BLACK 3/ORANGE
3/ORANGE 2/WHITE
4/YELLOW P2/BROWN INSULATE
2/WHITE LINE 4/YELLOW
LINE
RED RED
INTERCHANGE RED AND BLACK TO REVERSE ROTATION
E. 1
∅
∅∅
∅
, SPA DUTY WITH TERMINAL STRIPS
LOW 115 VAC HIGH 230 VAC
BROWN B B WHITE B
LINE LINE
L1 L1
WHITE L2 LINE L2 LINE
BROWN
A A
G. 3
∅
∅∅
∅
, 575 VAC
1 LINE
2
LINE
3 LINE
INTERCHANGE ANY
TWO LEAD LINES TO
REVERSE ROTATION
F. 1
∅
∅∅
∅
, 230 VAC
SINGLE VOLTAGE
1
LINE
5
4
LINE
8
INTERCHANGE LEAD
WIRES 5 & 8 TO
REVERSE ROTATION
WIRING DIAGRAMS, TEFC and ODP MOTORS

ASSEMBLY DIAGRAM DR623, DR823, DR1223
NON FIELD REPAIRABLE
M3 - Key Motor Shaft B4 – Housing B5 – Screw, Hsg/Motor B8 – Shim B9 – Impeller B10 – Screw, Impeller B11 – Lockwasher, Impeller B13 – Cover B14 – Screw, Cover B14A – Nut, Cover B14B – Screw, Cover Bottom B16 – Washer, Impeller B17 – Flatwasher
B27
–
Lip Seal

DR 623/823/1223 Service and Parts Manual
Model:
DR623
DR823
DR1223
Part No.:
038458
038460
038473
038459
038471
038474
080005
038472
080078
Item
No.
Qty.
Req'd Description
M3 1 B1 8 (4 pcs) 155361 155419 (6 pcs) 140016 B2 Not Used Not Used Not Used B3 2 529832 529834 529912 B3A 2 155375 155376 155377 B4 1 B5 4 B6 2 529699 529700 550795
Not Used Not Used Not Used
B7 Not Used Not Used Not Used B8 *
* * * * * * * * *
B9 1 B10 1 B11 1 B12 B13 1 B14 7 B14A 7 B14B 1
Screw, Manifold Flange Seal - Flange Housing
Parts Breakdown
Key Motor Shaft NON FIELD REPAIRABLE Screw, Flange Matting, Fiberglass Manifold Plate Shim .001" NON FIELD REPAIRABLE
NON FIELD REPAIRABLE
Screw, Hsg /Motor NON FIELD REPAIRABLE Muffler Insert Shim .0059" NON FIELD REPAIRABLE Shim .0079" NON FIELD REPAIRABLE Shim .002" NON FIELD REPAIRABLE Shim .0039" NON FIELD REPAIRABLE Shim .0138" NON FIELD REPAIRABLE Shim .0157" NON FIELD REPAIRABLE Shim .0098" NON FIELD REPAIRABLE Shim .0118" NON FIELD REPAIRABLE Screw, Impeller NON FIELD REPAIRABLE Lockwasher, Impeller NON FIELD REPAIRABLE Shim .0197" NON FIELD REPAIRABLE Impeller NON FIELD REPAIRABLE Screw, Cover NON FIELD REPAIRABLE Nut, Cover NON FIELD REPAIRABLE Impeller Spacer - Not Used - Remove From Dwg. NON FIELD REPAIRABLE Cover NON FIELD REPAIRABLE Screw, Cover Bottom NON FIELD REPAIRABLE
*As needed **Viewed looking at inlet/outlet ports 10/31/02 Rev. F

DR 623/823/1223 Service and Parts Manual
Model:
DR623
DR823
DR1223
Part No.:
038458
038460
038473
038459
038471
038474
080005
038472
080078
Item
No.
Qty.
Req'd Description
Parts Breakdown
B15 Not Used Not Used Not Used B16 1 Not Used Not Used Not Used B17 4 B18 2 529696 529697 550792 B19 4 155353 155378 155362 B19A 2 155353 155378 155378 B19B 8 (4 pcs) 155354 155356 155362 B20 1 529686 529687 550785 B20A 1 529689 529690 529691 B27 1
Motor Wiring Diagram Inline Filter
(included)
529671 C 515254 529672 G 515254
550482 C 515254
529673 C 515255 529674 G 515255 529671 C515255
550782 C 515256 550753 G 515256 529731 C 515256
Shaft Sleeve Flatwasher NON FIELD REPAIRABLE Screen, Muffler Retaining Eye Bolt Washer, Impeller NON FIELD REPAIRABLE
NON FIELD REPAIRABLE
Model Part #
Bolt, Muffler Hsg/Hsg Bolt, Muffler Hsg/Hsg Screw, Adapter/Hsg Muffler Housing
DR623AY72 038458 DR623AY86 038459
Muffler Adapter Lip Seal
DR823BB86 038472 DR823AY72 038460 DR623D89 080005 DR823BB72 038471 DR1223BE72 080078 DR1223BH72 038473 DR1223BH86 038474
*As needed **Viewed looking at inlet/outlet ports 10/31/02 Rev. F