Function: While the Loader is in the RUN mode, the Control signals Ingredient 1 Valve to open drawing material from the
Virgin/Product 1 source for the allotted amount of time. At the elapse of T1 timer Virgin/Product 1 Inlet Valve closes
and Regrind/Product 2 Inlet Valve opens to draw from Regrind/Product 2 material source for duration of T2 timer. Total
RUN time is culmination of both T1 & T2 timer functions. Simple Control Panel adjustments allow fine-tuning each timer.
POWDER (PL) OPTION
Powder (PL) model series Whisper® Loaders are designed to convey powders or other materials which produce a dusty
bi-product. All PL Loaders are equipped with the VP System for automated filter cleaning. Series PL1250 models are a
single-cartridge design with a Ø8” ID X 16” side-wall Body with the material Inlet located just below Filter and supplied
with (1) Filter mounted onto the Ø9” 1C Tubesheet. Loader models PL1500 (Ø13” ID x 1” side-wall Bodies with Inlet on
cone section) are three-cartridge designs supplied with (3) Filters mounted onto Ø14” 3C Tubesheet. Additionally special
body design options allow for more capacity and/or taller filters as well as a selection construction materials and finishes
to suit various requirements.
MOTOR/TURBINE
DANGER Please note that Whisper® Loaders are powered by electric motors and must be installed and operated in an
environment where contact with foam, liquid (including water) or other foreign substances does not occur. Do not allow
these types of substances to enter the fan system, motor housing or other electrical components. When operating
Whisper® Loaders in potentially hazardous areas – environments containing dry chemicals or other volatile materials –
an explosion-proof motor with special exhaust fittings must be utilized.
Failure to adhere to this precaution could lead to electrical shock resulting in flash fire (volatile substance exposure),
equipment or property damage or personal injury or death. Review your application and/or installation with IMS prior to
implementation.
The Vacuum Motor/Turbine assembly is a conventional 120VAC/60Hz/Ø1 Brush-type Motor coupled with a 2-Stage
Turbine Fan. The Motor’s Turbine produces two types of air movement: 1) Vacuum-conveying air which, after entering
the Loader Body, is drawn up through the membrane Filter; and 2) Cooling/Discharge air. The Motor’s cooling air is
drawn through the openings in the top of the motor cover and discharged at the bottom periphery of the motor cover.
Do not block air flow in and around the motor as damage may result. Typical life expectancy of the motor’s brushes is
approximately 400 operating hours. A SERVICE warning on the PLC appears when 400-operating hours has elapsed
requiring Motor-Brushes to be changed; refer to the Maintenance section for details on replacing Brushes.
WARNING Failure to replace motor brushes in a timely manner may lead to irreparable motor damage, requiring motor
replacement.
For special environment concerns Whisper® Loaders can be fitted an Explosion-proof Motor to work with flamma-
ble/explosive materials. In rare cases it may be necessary to utilize an inert-gas (Nitrogen) purge system to which IMS
can provide a special motor with N2 exhaust and recovery; also an optional closed-loop recover system is available. To
meet these special circumstances IMS offers the following motor options:
240-Volt Motor
Whisper® Loaders equipped with 240-Volt (240) Motors are designed for operation with 240VAC electrical mains supply
source. WARNING! If the Whisper® Loaders you purchased is equipped with 240VAC Motor and Controls DO NOT
PLUG Control Panel cord into a power source other than 240VAC/60Hz/Ø1 or compatible voltage (i.e. 220VAC/50Hz/Ø1).
© Copyright 2007 IMS Company. All rights reserved. An ISO 9001:2000 Registered Quality Company
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