PCD Pump User Guide
Scope of Supply
2/20/19
GPD Global
®
1
Scope of Supply
Includes PCD Pump, Stator, Syringe Support, Mounting Hardware, Pump Maintenance Tools,
and Documentation:
•
PCD Pump User Guide
- PN 22293078M
•
PCD Pump Parts List
- PN 22200613
•
KITS: Spare Parts/Setup/Cleaning
, PN 22290036
Introduction
The Progressive Cavity Displacement (PCD) Pumps are dispensing devices for precision work
with products requiring very high repeat accuracy with a wide range (low-to-high) viscosity.
These dispense pumps are true volumetric dispensing systems
that can be dismantled in a
short period of time when maintenance is required.
Functional Description
PCD Pumps use a rotating displacement consisting of a rotor and a stator.
A number of voids are produced as a result of the various geometries of the conveying
elements. Conveying that is either proportional to the angle of rotation or else is RPM-
dependent (produced by the rotation of the rotor in the stator).
Since the direction of flow is reversible, the medium can be sucked back to allow a clean break
of the thread. Self-sealing depends on the viscosity.
Applications
PCD Pumps are classified by the minimum volume and the maximum flow rate. Compatible
fluids for all models generally have a viscosity of less than 60,000 cps and include fluid types
such as water, grease, gel, silicones, glues, LED encapsulants, underfills, fats, oils, colors,
sealing compounds, adhesives, etc.
Features
•
PCD3
- The PCD3 model is designed for low volume applications with a minimum volume
of 1
µ
L and a maximum flow rate of 1.3 ml/minute.
•
PCD4
- The PCD4 model is designed for applications with a minimum volume of 4
µ
L and
a maximum rate of 6 ml/minute.
•
PCD6 & PCD7
- PCD6 and PCD7 models offer a higher flow rate than PCD3 and PCD4.
PCD6 has a minimum volume of 15
µ
L and a maximum flow rate of 18 ml/minute. PCD7
has a minimum volume of 60
µ
L and a maximum flow rate of 60ml/minute.
•
H and L
- Both H and L models benefit from lower priming volumes and air-free reservoir
change. H models use a high precision motor and may be used with the GPD stand-alone
controllers.
•
PCD3H and PCD4H
- These models offer higher resolution in dispense volumes. PCD3H
and PCD4H models include a low volume feed way for lower priming volumes and also
offer a higher resolution of dispense volume. Available only on MAX Series and DS Series
systems.
Options
A material level detect option is available for all PCD pump models when used on these GPD
Global platforms: MAX Series or DS Series.
