Nederman S-Series User manual

Installation & Operation Manual
Stationary Filters
Bag Filter Dust Collector
S-SERIES ELECTRICAL
Installation, Wiring, and Troubleshooting
No portion of this manual may be reproduced without the written approval of Nederman.
Original Installation and Service Manual
2022-06-03 – Rev 3.1

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TABLE OF CONTENTS
Section 1.0 ….Preface..……………………………………….………………………….………. 3
Section 2.0…..Circuit Sizing………….……………………………………………………....3-4
Section 3.0......Motor Connections ...................................................................................6
Section 4.0.......Trouble Shooting .................................................................................... 7-8
Section 5.0......Inrush Current.............................................................................................9
Wiring Diagrams..............................................................................................................10-11

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Section 1.0 – Preface
Nederman S‐Filters utilize high‐efficiency induction motors that have a high startup current, known as “Inrush
Current”, that lasts for a brief period, usually less‐than 10‐seconds. When the motor first starts, it will
experience up to 8x the FLA of the motor current. This will decrease rapidly until the motor reaches steady
state. If the motor does not turn over, please see Section 4.0 Troubleshooting.
There are specific electrical codes and standards outlined within this manual that need to be employed when
making the electrical connections.
Failure to adhere to the procedures outlined in this document WILL VOID the Nederman product warranty.
Section 2.0 – Circuit Sizing
Refer to Table 1 and 2, 1 and 3 ‐ Phase S ‐ Filter Motor Circuit Sizing Tables, to appropriately size the branch circuit
conductors and circuit breaker size. The data in this table is based on the 2020 NEC and is to be used as
recommendations only . Final discretion is the responsibility of the Licensed Electrician, local codes,
regulations, and the AHJ.
Due to the inrush current, the fusing/breaker must be sized larger to protect the wiring in the event of a short‐
circuit. The motor-overhead, not the breaker, provides the motor protection and should be set as close to the
FLA (Full‐Load Amperage) of the motor as possible to maximize motor protection.
The minimum conductor size listed in the table is calculated based on 75°C wire. If using a different type of
wire, or the dust collector is located a significant distance from the main panel, the wire size must be adjusted
accordingly.
Note: AWG #12 is the minimum acceptable wire size
TABLE 1 - 1 Phase S-Filter Motor Circuit Sizing Table8
ServiceFactor 1.0 Motor FLA1Conductor Size2,7 Inverse Time
Breaker Size3Time‐Delay Fuse4Non Time‐Delay5O/L Setting6
S‐500
208V
22.8
A
8
AWG
80
A
60
A
100
A
26
A
230V
20.2
A
8
AWG
70
A
50
A
90
A
23
A
S‐750
208V
35
A
6
AWG
110
A
80
A
150
A
40
A
230V 30 A 8 AWG 100 A 70 A 125 A 35 A

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Section 2.0 – Circuit Sizing
1 Techtop motor nameplate full‐load amps (Used for setting overload only).
2 Minimum size based on 75ᵒC (167ᵒF) insulation and copper wire, such as RHW, THHW, THW, THWN, XHHW,
XHWN,USE, ZW. Verify with table 310.16. Conductor size may need to be increased based on wire type, length
and/or run.
3 Branch circuit protection to be sized at 250% of motor FLC for (Inverse Time) circuit breaker based on tables
430.52, 430.248, and 430.250. Based on 2020 NEC 70 Article 430 and best‐practice.
4 Branch circuit protection to be sized at 175% motor FLC for Dual Element (Time‐Delay) Fuse based on tables
430.52, 430.248, and 430.250. Based on 2020 NEC 70 Article 430 and best‐practice.
5 Branch circuit protection to be sized at 300% motor FLC for Nontime‐Delay fuse (Class CC fuses) on tables
430.52, 430.248, and 430.250. Based on 2020 NEC 70 Article 430 and best‐practice.
6 Recommended setting for overload on Nederman Push Button Starters based on motor nameplate multiplied by
service factor.
7 Wire‐nuts or soldering are
NOT acceptable means to connect motor leads per NFPA 79, 13.5.9. Use appropriate
components to make motor connections such as split bolts, crimp‐connections and eye‐bolts.
8 It is the responsibility of the end‐user to follow State and Local Codes. This chart is provided as a helpful
resource only. Use of a qualified and licensed industrial electrician is required for proper installation.
TABLE 2 - 3-Phase S-Filter Circuit Sizing Table8
ServiceFactor 1.0 Motor FLA1Conductor Size2,7
Inverse Time
Breaker Size3
Time‐Delay
Fuse4Non Time‐Delay5O/L Setting6
S‐500
208V
13.2
A
10
AWG
45
A
30
A
50
A
17
A
230V
12.4
A
12
AWG
40
A
30
A
50
A
16
A
460V 6.18 A 12 AWG 20 A 15 A 25 A 8 A
575V
4.94
A
12
AWG
20
A
15
A
20
A
6
A
S‐750
208V 19.2 A 10 AWG 70 A 45 A 80 A 24 A
230V
17.7
A
10
AWG
60
A
40
A
70
A
22
A
460V 8.6 A 12 AWG 30 A 20 A 35 A 11 A
575V 7.08 A 12 AWG 25 A 20 A 30 A 9 A
S‐1000
208V
26.3
A
8
AWG
80
A
60
A
100
A
33
A
230V 23.9 A 8 AWG 70 A 50 A 90 A 30 A
460V
12
A
12
AWG
35
A
25
A
45
A
15
A
575V 9.55 A 12 AWG 30 A 20 A 30 A 12 A

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Section 2.0 – Circuit Sizing
Product Owner/End-user shall provide branch circuit protection. Refer to the Motor Circuit Sizing Tables on
previous pages for max breaker and fuse sizes.
*Note: F1 represents fuses. An Inverse Time Breaker would replace the fuses (F1) in the below example.

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Section 3.0 – Motor Connections
It is important to install the correct junction box motor connections.
Under no circumstances shall wire‐nuts/Marrettes be used to make motor connections! (see Figure 1)
Per NFPA 79, 13.5.9, wire‐nuts and soldering motor leads are unacceptable connection methods for motors as
their use greatly increases the risk of fire and hazards to machinery and personnel.
The use of wire‐nuts on Nederman motors VOIDS THE WARRANTY!
Figure 1 – Unacceptable Connector
Acceptable alternatives include the use of Split‐Bolts, Crimp‐Connectors, Eye‐Bolts with Screws, or other
approved motor connection terminals. (See Figure 2)
Figure 2 - Acceptable ConnectorsSplit Bolt Insulated Multitap Crimp
Product Owner/End User:
1) Must ensure that you are using dust‐tight connections on the motor junction box. The cord‐grip used
should tightly secure the flexible conduit or cord being used. The motor junction box cover should be
secured to the motor so that no dust or water can enter the junction box.
2) Must refer to the wiring diagram for correct motor voltage configuration.
This diagram is located on the cover of the junction box.
3) Must use appropriate connection components (Ex: split bolts, eye-bolts crimps)
4) Is responsible for following all local, state and federal codes and regulations.
User can use the free access to the standard by going to www.nfpa.org/79
WARNING

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Section 4.0 – Troubleshooting
1) Are Wire‐Nuts used in the motor junction box?
Remove and dispose of the wire‐nut as they (and soldered connections) are prohibited for motor
connections per NFPA 79, 13.5.9.2. Crimp connections, lugs & split‐bolts, Polaris connectors, or some
other acceptable connection method must be used.
2) Motor starts but will not turn over?
Set the overload adjustment dial as close to the O/L Setting in the Motor Circuit Sizing Tables for the
respective series of filter and voltage. Move trip class up incrementally until overload does not trip on
start. This is different than the overload adjustment. (These are 10A, 10, 20, and 30)
3) Is the circuit breaker or fuse‐protection sized according to the 1/3‐Phase Motor Circuit Sizing Table?
Ensure the circuit protection is sized appropriately per section 2.0 for the filter model.
4) Are the supply conductors the correct size according to the 1/3‐Phase Motor Circuit Sizing Table?
Please confirm correct sizing. If the length between the starter and the motor exceeds 150‐feet, consider
upsizing the conductors 1 size to account for voltage drop in the conductors. Consult your Licensed
Electrician about the voltage drop.
5) Is the contactor not pulling in? Is the contactor “chattering?” Is it making an odd sound?
Verify Contactor Voltage (look on top of contactor for the A1 & A2 connection block.
The voltage label will be 200‐240v (for 208v, 230v, & 240v) or 440‐480v (for 460v and 480v)
6) Does the motor spin freely by hand?
If not, there is a problem with the motor. Contact Nederman to order a replacement.
7) Is ductwork connected?
Ensure that all ductwork is connected to the fan. If not, block the fan intake by 1/2. It is important to
introduce static resistance to the airflow. Otherwise, the motor will over‐amp & potentially fault.
Note: Continue to the next page if none of these options correct the problem.

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Section 4.0 – Troubleshooting
Please follow these steps to verify motor condition. If it is a brand new motor, please contact Nederman.
1) Separate the individual motor leads and check the resistance if each winding with an ohmmeter. A standard
multi‐meter is limited in checking issues with motors, but can still provide some valuable information.
2) For the 9‐wire motors, note the resistance values below:
a. T1 to T4 =
b. T2 to T5 =
c. T3 to T6 =
d. T7 to T8 =
e. T8 to T9 =
f. T7 to T9 =
3) Next, check each value to ground, or the chassis.
a. T1 to GND =
b. T2 to GND =
c. T3 to GND =
d. T4 to GND =
e. T5 to GND =
f. T6 to GND =
g. T7 to GND =
h. T8 to GND =
i. T9 to GND =
4) While the motor is disconnected and the circuit breaker turned off, measure the resistance of the
supply leads to ground to ensure there is not a direct short from one of the supply leads.
a. L1 to GND =
b. L2 to GND =
c. L3 to GND =
5) If you have access to a MEGGER, perform an Insulation test from each lead to ground (motor frame):
a. T1 to GND =
b. T2 to GND =
c. T3 to GND =
d. T4 to GND =
e. T5 to GND =
f. T6 to GND =
g. T7 to GND =
h. T8 to GND =
i. T9 to GND =
6) Reconnect leads, following the proper wiring pattern shown on the motor wiring label. Before proceeding,
remove any wire‐nuts from the motor. Wire nuts & soldered connections are prohibited for motor
connections per NFPA 79, 13.5.9.2. Use crimp connections, lugs & split‐bolts, Polaris connectors, or some
other acceptable connection method
7) Start the dust collector and measure the running current after the motor reaches full‐speed.
a. L1 Amps =
b. L2 Amps =
c. L3 Amps =

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Trip Class
10A 2 < Ti ≥ 10
10 4 < Ti ≥ 10
20 6 < Ti ≥ 20
30 0.5 < Ti ≥ 30
Section 5.0 – Inrush
When an AC induction motor starts, the supply voltage creates a magnetic field in the stator that induces a
magnetic field in the rotor. The interaction of these two magnetic fields produces torque turning the motor.
The creation of the magnetic field causes an induced voltage that opposes the supply voltage known as “back
EMF” that also limits the amount of current in the motor.
The amount of “back EMF” produced is directly proportional to the speed of the motor so at startup, when the
motor speed is near zero, there is very little “back EMF” and high “inrush” current is allowed to flow. The highest
level of inrush current occurs during the first half‐cycle of motor operation and can be more than 10 times the
motor’s FLA (full‐load amperage). As the motor turns, the current decreases to the level of the motor’s locked
rotor current, which is often six to eight times the motor’s normal operating current. As the motor speed and
“back EMF” increases, the current further decreases, until normal operating speed and current are reached.
High inrush current can:
•Cause nuisance tripping of protective devices or motor damage.
•Cause voltage dips in the supply line (which can affect other equipment).
•Prevent the motor from properly starting.
•Cause high torque production, exceeding motor ratings, causing sudden and severe acceleration
damaging mechanical loads.
Tip for Inrush:
Use the overload adjustable trip class function that increases the time that the overload experiences the
locked rotor current and motor reaches steady state. This will be evident as the motor will try to start and trip
the overload. Below is an example of an adjustable trip class.

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The Nederman Group is one of the World’s leading suppliers of products and solutions within the
environmental technology sector focusing on industrial air filtration and recycling. These products and
solutions reduce the environmental impact of industrial production and create safe and clean working
environments while boosting production efficiency.
The group’s offering covers the design stage through installation, commissioning and servicing with
subsidiaries in 29 countries and agents and distributors in over 30 countries.
Nederman is ISO 9001 and 14001 certified and develops and produces in its own manufacturing and assembly
facilities in Europe, North America and Asia.
Nederman Service Capabilities
Nederman has certified service partners trained extensively in servicing our machinery. Make sure to choose a
certified technician to service your Nederman equipment as they have the correct tools and knowledge to
solve any machinery issues and improve its performance. Be sure to ask if your technician is certified by
Nederman.
Our services for dust collection systems are customized to your particular needs. We work with you to
understand your needs, then develop a program to meet your specific needs. Our services include: (not all
services available in all locations)
Bag Change-outs
Bag Selection Recommendations
Collector Re-builds
Dye Testing for Leakage
Electrical Tests - Current, Voltage
Emergency Call-outs
Filter Media Analysis
Mechanical Survey and Repair
Multi-year Contracts
New Collector Start-up Service
On-going Technical Support
Preventative Maintenance
Repair and Replace Gauges/Times/Valves
Stack Emissions Testing
Training Programs
Troubleshooting / Auditing
Velocity, Pressure and Temperature Tests
Written Service Reports
Customer Service and Technical Support
Nederman Corporation USA
4404-A Chesapeake Drive
Charlotte, NC 28216
336-821-0800
www.nederman.com