Armstrong h-54 Installatie- en bedieningsinstructies - Pagina 7
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fig 1
connections
green/verde screw
ground
5 Disconnect or remove AC power to the equipment being
serviced and allow four (4) minutes for the capacitors to
discharge any residual voltage.
6 Proceed to Check 3.
Check 3: Motor verification
1 Disconnect or remove AC power to the equipment serviced
and allow four (4) minutes for the capacitors to discharge
any residual voltage.
2 Make sure that the motor shaft spins freely by hand without
effort in both directions [fig 2].
fig 2
note: Replace the motor and control unit if the shaft does not spin freely
by hand without effort.
Final checks of the motor
• Check the mounting and fastening of the motor and control
unit. Make sure the motor and the control unit are securely
attached together and mounted tightly in the system.
• Check the control unit connectors. Inspect for shorts, de-
tached wiring, or loose connections
• Check the motor and verify the rotation of the driven load.
Make sure it spins freely by hand in both directions without
effort or assisted means.
• Check all circuit breakers.
In-line circulating
pumps
3 glossary
The glossary contains definitions for acronyms and terms oc-
curring in the Operation, Configuration, and Troubleshooting
Manual or in the PerfectSpeed® User Interface.
ccw
Counter-clockwise direction. Motor rotation is viewed from the
lead end of the motor, not the shaft.
cw
Clockwise direction. Motor rotation is viewed from the lead end
of the motor, not the shaft.
dE
Demand. The set point of the motor.
ecm
Electronically Commutated Motor.
eeprom
Electronically Erasable Programmable Read Only Memory. A
memory chip in the control capable of retaining data when the
power supply is removed.
Inch Pounds (lb-in)
A unit of pressure resulting from a force of one pound- force
applied to an area.
init
Appears in the digital display on the PerfectSpeed® User Inter-
face when the motor is in the process of initializing.
Input
The controlling device, 0 to 10 volts (DC).
le
The end of the motor opposite the shaft extension from which
the rotation of the shaft and driven load are determined.
Max Power
The horsepower rating in watts delivered by the motor.
Max Speed
Maximum functioning speed of motor in Speed Mode.
Min Speed
Minimum functioning speed of motor in Speed Mode.
Max Torque
The torque point at the highest speed just below power limiting
of the motor.
insta l l a t io n &
opera ting in str u ct io n s
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