Nidec RESCUE EcoTech Programming manual

RESCUE EcoTech®
Condenser Fan Motor
Installation and
Troubleshooting Manual
For technical assistance or questions
related to your RESCUE EcoTech® Condenser Fan Motor
call the RESCUE EcoTech® Condenser Fan Motor hotline
1-888-540-5540
Read the entire manual prior to installation of the
RESCUE EcoTech® Condenser Fan Motor.
Follow all instructions contained herein.
M01812028

Table of Contents
Important Safety Information ....................................................................................... 2
Product Overview ......................................................................................................... 5
Key Features and Benefits ..................................................................................... 5
Specifications ......................................................................................................... 5
Motor Pictures ........................................................................................................ 6
Shaft Down, Shaft Up .................................................................................... 6
General Information ................................................................................................ 6
Initial Inspection ............................................................................................. 6
Handling & Care ............................................................................................ 6
Motor Installation .................................................................................................... 7
STEP ONE: Turn OFF power ........................................................................ 7
STEP TWO: Remove existing fan motor from the condensing unit ................ 7
STEP THREE: Locate and verify connections ............................................... 7
STEP FOUR: Install the motor into the condensing unit ................................. 7
Motor Start-Up & Operation .................................................................................... 8
START UP & OPERATION CHECKLIST ....................................................... 8
FINAL CHECKS ............................................................................................ 8
Troubleshooting ............................................................................................................ 9
Warranty Information ............................................................................................ 10
LIMITED WARRANTY ................................................................................. 10

2
Important Safety Information
Use only specially designed motors where explosive atmospheric hazards exist. See the National Electrical
Code (NEC) Article 500 or check with local codes for explanation of hazardous or classified atmospheres and
locations. Unless the motor is specifically marked “ELECTRIC MOTOR FOR HAZARDOUS LOCATIONS,” it is
not suitable for use in Class I or II hazardous locations as defined by the NEC.
 Only trained and qualified professionals familiar with ECM products should install or service the motor and
control unit.
 Before connecting or disconnecting cables or other electrical connections, verify that the power to the
system is removed. Failure to comply may cause serious damage to the motor or HVAC system or injury to
personnel.
 Because of the risk of electric shock, only individuals thoroughly trained in the use of multimeters should
conduct voltage tests.
 Never touch the metal contacts on the multimeter during a test.
 For air moving applications, all enclosure covers and panels must be in place before measuring the
amperage.
 Always check testing equipment for proper operation before use.

3

Installation, operation, and maintenance must be performed by qualified personnel. Familiarization with and
adherence to the NEC, National Fire Protection Association (NFPA) standards, and to local codes are
required. It is important to observe safety precautions to protect personnel from possible injury. Personnel
should be instructed with respect to handling each of the following:
 All aspects of the installation must conform to the applicable requirements of the NEC, including Article
430 (Motor Circuits and Controllers), as well as all local codes.
 Make sure the unit is electrically grounded and that proper electrical installation wiring and controls are
used consistent with local and national electric codes. Refer to NEC Handbook and NFPA No. 70. Employ
qualified electricians.
 Code requirements differ from state to state. Install equipment using qualified electricians in accordance
with the applicable codes and ordinances in your area and in accordance with NEC. All electrical
connections should be made and maintained by a qualified or licensed electrician.
 Insulate all connections carefully to prevent grounding or short circuits. Reinstall all conduit and terminal
box covers. To avoid overheating or loss of performance, voltage to the motor control unit must be within
plus or minus 10% of the nameplate voltage.
 Avoid contact with energized circuits or rotating parts.
 Provide proper safeguards for personnel against rotating parts.
 Make sure there are no unusual noises or vibrations when the motor is running.
 Always disconnect electrical power at the fuse box or circuit breaker panel before handling electrical
connections or performing maintenance on this unit. Allow the motor to come to a complete stop. Double-
check to make sure power is OFF, and that it cannot be turned ON while you are working on the
equipment. Wait 4 minutes before handling the motor or wiring harness. This allows the bus capacitors to
fully discharge.
 A poor electrical connection can overheat and cause terminal and/or terminal board failures. Examine the
wiring harness quick-connect terminals carefully for any signs of physical deterioration or loose fit between
the motor and unit connections.
 Care must be taken to assure connections are made to the proper terminals and adequate electrical
clearances are maintained.
 The control unit on the motor contains potentially hazardous voltage.
 These instructions provide field technicians a guide for installing a RESCUE EcoTech® Condenser Fan
Motor and are intended for a typical household air conditioning/heat pump system. These instructions do
not override or replace any instructions provided by the HVAC system manufacturer.
 A motor should not be operated under conditions that cause the motor protection mode to run continually.
A motor that operates continually in motor protection mode may be overloaded, or the supply voltage or
frequency may be incorrect.

4
 Periodically inspect the installation. Check for dirt accumulation, unusual noises or vibration, overheating,
worn or loose couplings, high motor amps, poor wiring or overheated connections, loose mounting bolts or
guards, and worn motor starter contacts. Check control unit connectors. Inspect for shorts, detached wiring
or loose connections.
 Do not use solvents! Some solvents may attack motor insulation, finish or bearing lubricants. Solvents are
highly flammable.
 Be careful when touching the exterior of an operating motor. It may be hot enough to cause serious injury.
This condition is normal for most motors when operated at rated load and voltage.
 Use motors only in the applications that they are designed for.
RESCUE EcoTech® Condenser Fan Motor may look visually different from the motor it is replacing.
The RESCUE EcoTech® Condenser Fan Motor is designed as a replacement for PSC condenser fan motors.
The motors external appearance is not an exact replica of the motor it is replacing; however, when properly
installed, RESCUE EcoTech® Condenser Fan Motor will fit in the fan unit housing and function according to
specifications.
 The RESCUE EcoTech® Condenser Fan Motor is designed for direct-drive outdoor condensing unit
applications.
 RESCUE EcoTech® Condenser Fan Motor is designated for continuous, air-over duty, and must be
mounted in the air stream of an air moving device, such as a fan. DO NOT operate the RESCUE EcoTech®
Condenser Fan Motor outside of the air stream as that may overheat and damage the motor.
 Temperature around the motor should not exceed 140° F (60° C) or be less than -40° F (-40 0 C).
 Wear safety glasses to inspect the equipment while it is running or while working on the equipment,
especially if cover plates are removed.
 Voltage symbols vary among different multimeters and may be displayed as Vac, AC, V, or a V beneath a
wavy line. Select the correct symbol and set the multimeter to the voltage closest to but higher than the
voltage you are measuring.
 The RESCUE EcoTech® Condenser Fan Motor is properly packaged for shipment and storage and should
be kept in a clean and dry indoor area.
 Read all instructions thoroughly and be familiar with the equipment before installing or working on it.
 To prevent damage to HVAC system, verify temperature rise is within the original equipment specifications
of the manufacturer in all modes of operation.
 Ball bearing motors are permanently lubricated. No maintenance is required.
 Do not strike the motor shaft with a hammer or other tool as this may damage the bearings.

5
Product Overview
The RESCUE EcoTech® Condenser Fan Motor is developed to stand up to harsh environments and
temperatures found in outdoor condensing units. The RESCUE EcoTech® Condenser Fan Motor provides the
efficiencies required for high SEER air conditioning systems.
The motor is designed with a line-start feature that allows for quicker installation with fewer components out-of-
the-box. The motor is programmed to match the rotation and speed most preferred by major equipment
manufacturer and offers the flexibility for adjustment to speed and rotation.
Key Features and Benefits
 Line-voltage starting motor with 2 speeds
 Second speed adjustment use a 24V speed tap
 Rotation adjustment use a 24V rotation tap
 Totally enclosed air over (TEAO) motor can be mounted in multiple mounting positions
 High 60°C max ambient operating temperature
Specifications
 Horsepower: 1/3-1/5 HP
 Voltage: 1Ø, 208 - 230 Volts
 Speeds: 825 and 1075 RPM
 Rotation: Reversible
 Operation Mode: Constant Speed
 Frame: NEMA 48
 Enclosure: Totally Enclosed Air Over (TEAO)
 Efficiency: Up to 75%
 Mounting: Belly-band, Stud Mount, Shaft Up or Shaft Down Orientation

6
Motor Pictures
Shaft Down Shaft Up
General Information
Initial Inspection
Check the RESCUE EcoTech® Condenser Fan Motor to verify that:
 The shaft should turn freely by hand.
 The nameplate data conforms to specifications of motor ordered.
Handling & Care
 Motor should be stored indoors in a clean, dry location.
 Proper selection, installation and maintenance will assure longer life and more dependable service.

7
Motor Installation
These instructions provide field technicians a guide for installing a RESCUE EcoTech® Condenser Fan Motor
and do not override or replace instructions by the HVAC system manufacturer.
STEP ONE: Turn OFF power
STEP TWO: Remove existing fan motor from the condensing unit
a. Gain access to the existing motor and fan blade.
b. Disconnect motor leads from the condensing unit.
c. Refer to the manufacturer's installation manual for fan motor removal instructions.
d. Remove fan blade from the motor shaft.
STEP THREE: Locate and verify connections
Connect the motor leads to the condensing unit.
Motor Lead Color Signal Description
Black L1 208-230 Vac Power Connection
Brown L2 Common Power Connection
Green/Yellow Earth Ground Earth
Yellow Speed *0 Vac – 1075 rpm
24 Vac – 825 rpm
Orange Rotation Viewing
Lead end
*0 Vac – CCW
24 Vac – CW
Blue 24 Vac Common To be connected for 825 rpm
or CW
*Note: No voltage applied to yellow and orange results in the motor operating
CCW LEAD END at 1075 rpm.
STEP FOUR: Install the motor into the condensing unit
Refer to the manufacturer's installation manual for fan motor installation instructions.

8
Motor Start-Up & Operation
START UP & OPERATION CHECKLIST
Following installation, motor operation should be tested in all system modes for the following:
 Unusual noises and vibration – If unusual noises or vibration is detected refer to the
Troubleshooting section.
 Motor amperage – Amp reading cannot exceed 10% above the nameplate current.
 Confirmation of proper rotation of fan blade.
FINAL CHECKS
 Make sure motor is mounted tightly in condensing unit.
 Check lead connections, inspecting for shorts and detached wiring. Make sure all wiring connections are
securely connected.
 Check motor and verify fan rotation. Make sure it spins freely manually without effort or assisted means in
both directions. Verify set screw on fan blade has been properly tightened.
 Check that the circuit breaker is ON.

9
Troubleshooting
Symptom Corrective Action
Motor is not
spinning
• Verify thermostat is issuing call for activity.
• Check circuit breaker for trips or accidental shutoff.
• Verify that motor is properly connected.
• Inspect for shorts or detached wiring.
Motor rattles or
makes excessive
noise
• Inspect motor and fan for accumulated dirt or other
signs of damage.
• Inspect fan for bent or missing blades, misaligned
shaft, or unsecured mounting to shaft.
• Inspect motor mounting for cracks, dents, or corrosion.
• Inspect motor mounting to verify it is properly secured.
• Verify that motor shaft spins freely without effort, by
hand, in both directions.
Motor spinning in
the wrong direction
CWLE rotation: Check to make sure you have 24V across
Blue and Orange leads.
CCWLE rotation: Orange and Blue leads should have no
voltage.
Power must be off in order for rotation to change.
Motor rotating at
the wrong rpm
Blue lead not connected for 24V Common when 825 rpm
is required.
Yellow lead should have 24V for 825 rpm.
Yellow lead should have no voltage for 1075 rpm.
For Technical Assistance call the
RESCUE EcoTech® Condenser Fan Motor
OUTDOOR Hotline:
1-888-540-5540