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The N-2700 Series
Warm Melt Dispensers are a series of Constant
Flow Rate, Positive Displacement, Piston Metering
units designed to melt and dispense warm applied
adhesives and sealers directly from 5 gallon
pail or 55 gallon drum original material supply
containers. Using the time tested and proven
Ram Meter Series Dispenser
technology, the Warm Melt Series Dispensers
integrate all temperature control functions
with the dispenser functions into one clean
package.
Some of the standard features of the N-2700
Series Warm Melt Dispensers are as follows:
- Positive
Piston Displacement Metering Unit ensures
repeatable volumetric output of shots or beads
of material dispensed.
- Heavy
Duty, Temperature and Pressure Compensated
Hydraulic Drive Package provides an adjustable
but Constant Flow Rate Dispenser that is capable
of delivering repeatable beads or shots of
material, independent of material viscosity
or fluid pressure variations. Electric Servo
Drive package is available as an option.
- Heavy
Duty, Double Post Elevators are used on both
5 gallon and 55 gallon units to raise and
lower metering unit into supply container
and maintain forceful contact of heated platen
to surface of material for uniform melting.
3” rams are used for 5 gallon elevators
and 5 1/2” rams are used on 55 gallon
units as standard. For difficult to melt materials,
a 6 1/2” ram double post 55 gallon elevator
is available as an option.
- Material
Low Level Warning and controls interlock prevent
Reloading on an empty container and thus cavitating
the meter.
- System
Temperature Control is accomplished via 4
independent closed-loop temperature controlled
zones. This provides maximum flexibility to
material heating requirements. Zones controlled
are platen, meter, hose and gun.
- PID
Temperature Controllers, 1 for each zone,
provide precise control of the material temperature
even under variable operating conditions.
- SCR
type Solid-state power relays allow for rapid
cycling of power to the heaters for tight
temperature control and extended heater life.
- High
Temperature Limit Controllers, 1 for each
zone, provide independent, safety back-up
over-temperature protection for the system.
- 2
Temperature Sensors are provided for each
zone for independent, accurate and reliable
temperature sensing. Probe type Thermocouples,
actually immersed and sensing the material
temperature in each zone, are provided for
the PID controllers. Surface mount washer
thermocouples, attached to the heated parts
of each zone, are provided for the Limit controllers.
Thermocouples provide rugged and fast responding
temperature sensors. RTD sensors are available
as an option.
- Automatic
Temperature Setback feature allows the temperature
controllers’ setpoints to be automatically
reduced to lower “holding” temperatures
whenever material is not being used for a
given amount of time. This feature extends
the work life of most materials by not heating
the material for excessive amounts of time.
It also allows the dispenser to heat up and
attain working temperature more rapidly than
from a cold start.
- Automatic
Time Lapse Shutdown feature automatically
shuts down the system whenever it is left
unattended and not used for a selectable amount
of time. This feature prevents the system
from being left in Setback mode indefinitely
and also ensures an automatic and more gradual
equipment / material cool-down process.
- NEMA
12 rated control panel built to automotive
standards (JIC) provides control of all dispenser
functions and includes a complete operator
interface.
Many options
are available for the N-2700 Warm Melt Dispensers.
Options such as the Twin Flow System, which
provides dual heated metering units that auto-crossover
from one metering unit to the other when a material
container is emptied.
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