During Normal Operation LEDs illuminate at the RJ45 connector
on the Electronic Controller. The left (green) LED indicates that
the Electronic Controller has properly identified the router. The
right (orange-yellow) LED illuminates each time the Electronic
Controller communicates with the router. See Figure 7b.
If the right (orange-yellow) LED does not blink, reset the Elec-
tronic Controller by cycling the power switch OFF and then ON.
See Figure 7.
Use UP and DOWN (see Figure 7) to scroll through each sensor’s
velocity and temperature reading. Press ESC on the Electronic
Controller to display the average velocity and temperature values.
If an error occurs with one of the sensors, an error indication
displays on the LCD screen. The error is indicated on the LCD
screen by the velocity unit in lowercase letters.
rEpAIr InForMATIon
If the EFAMS Thermal Dispersion Fan Inlet Measuring System
fails to operate within its specifications, replace the unit. For a
replacement EFAMS System, contact the nearest Ruskin repre-
sentative.
MAInTEnAnCE
Once a year, scroll through the velocity and temperature values
using UP and DOWN (see Figure 7). Clean the sensor nodes if
readings vary from normal readings.
To clean the electronic sensors:
1. Remove cover from Electronic Controller and turn power
switch off. Please make sure the sensor is allowed to cool before
cleaning.
2. Unplug the shielded Cat5e cable from the RJ45 connector on
the end of the thermal dispersion sensor.
3. Spray the thermal dispersion sensor with a non-flammmable
circuit board cleaner if necessary. Ensure that the sensor is facing
downward during cleaning so any moisture encountered in the
cleaning process will drain out of the sensor.
4. Remove lint, dust, and other matter from the sensor. (Do
not use high pressure air.) Care must be taken not to bend the
thermistors while cleaning. The sensor should be centered in its
opening after cleaning.
Annually inspect the thermal dispersion sensor in unfiltered out-
side air, return air, or exhaust air applications to ensure that the
thermal dispersion sensors are free of excessive buildup of lint,
dust, or other airborne particulate.
SuperClean Defluxer by MicroCare (MC-SPR) (or equal) can
be used to spray clean the thermistors. MicroCare MC-SPR is
designed for cleaning electronics, rosins and plastics. MicroCare
MC-SPR is static safe and nonflammable.
TroUBlEShooTIng
3900 Dr. Greaves Rd.
Kansas City, MO 64030
(816) 761-7476
FAX (816) 765-8955
www.ruskin.com
®
TEChnICAl SpECIFICATIonS
EFAMS Thermal Dispersion Fan Inlet Airflow Measuring System
Velocity requirements
Minimum 0 fpm (0 mps)
Maximum 10,000 fpm (50.8 mps)
Fan Degradation
Minimal
Sensor Accuracy
Airflow: ±2% of reading and ±0.15% repeatability
Temperature: ±0.10°F
24 VAC internally fused power supply
Velocity Output: 4 to 20 mA (Std.) or 2 to 10 VDC (requires 500-ohm resistor)
Temperature Output: 4 to 20 mA (Std.) or 2 to 10 VDC (requires 500-ohm resistor)
Fused outputs
Electronic Controller
Included
power requirement
Dedicated 24 V, 40 VA transformer
power Consumption
1 router with 2 sensors: 20 VA, 1 router with 4 sensors: 25 VA,
2 routers with 8 sensors: 40 VA
operating Conditions
Sensor: -25 to 140°F (-32 to 60°C); 0-99% RH, non-condensing
Controller: -20° F to 120° F (-29° C to 49° C); 0-99% RH, non-condensing
router Unit (one per
One microprocessor based multiplexer circuit
Fan location)
Sensor/communications circuit
All circuits encapsulated in electronic potting compound
Approximate weight
Controller: 2.9 lb (1.32 kg)
Router: 1 lb (0.45 kg)
Sensor: 0.5 lb (0.22 kg)
Measuring stations are tested at an AMCA Registered Laboratory using instrumentation and procedures in accordance with AMCA Standard
No. 610-93, Airflow Station Performance.
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifica-
tions, consult the local Ruskin office. Ruskin shall not be liable for damages resulting from misapplication or misuse of its products.
Contact Ruskin Air & Sound Control, Air Measuring Product Sales
3900 Dr. Greaves Road Grandview, MO 64030.
Telephone: 816-761-7476
www.ruskin.com
Copyright 2018 Ruskin Manufacturing
The information provided in this manual is believed to be complete and accurate. Ruskin Manufacturing is a manufacturer and supplier of
equipment and, as such, is not responsible for the manner in which its equipment is used nor for infringement of rights of third parties resulting
from such use. System design is the prerogative and responsibility of the system designer.
All rights reserved. The product detailed in this manual is protected by a U.S. patent. Illustrations and product descriptions pub-
lished are not binding in detail. In keeping with its policy of continuous improvement, ruskin reserves the right to change or modify
designs or specifications of products without notice or obligation.
