D-Series Syringe Pumps - Isco

D Series Syringe Pumps
Section 9 Modifier Addition
When “RUNNING” is displayed, the controller monitors pump A
piston movement and calculates the pump B piston movement
required to deliver the correct ratio of modifier. If pump A cannot
maintain the set pressure, as when the extraction cartridges are
initially filling or pump A is refilling, the controller reverts to
‘EQUILIBRATION” and pump B pressure is dropped below that
of pump A to avoid delivery of incorrect modifier concentrations.
Once the pump A set pressure is reestablished, the system will
re-equilibrate.
When pump B needs refilling, it must first be placed under independent
control as you must run it to return 5-10 ml of modifier
back through the valve to be sure that the cylinder is free of air.
Note
To properly equilibrate the pumps, they must be delivering
fluid.
9.2 Plumbing Kit for
Modifier Addition
The modifier addition kit (P/N 68-1247-079) is detailed in
Table 9-1. This package is used to connect the outlets of two
pumps together, using a Valco 1 16” tee as a mixer.
Table 9-1 Modifier Addition Kit
Part Number Description
209-0169-47 Tee union fitting
60-1243-540
1 16” OD 12 cm tubing
209-0169-34
1 16” Ferrule
209-0169-35
1 16” Gland nut
60-2253-209 Standard check valve housing
60-3864-010 Check valve cartridge
60-1243-516 Single check valve housing
209-0169-41
1 8” Ferrule, zero vol
209-0169-27
1 8” nut
60-1243-539
1 16” OD 1.5 m tubing
60-1243-659 Valve spacer
209-0098-05 2-way valve - 1 8” OD
60-1243-658 Tubing, valve inlet
60-1243-644 Tubing, check valve
209-0162-10 Reduction union
60-1243-570 Tubing
209-0161-80 Check valve cartridge
60-1243-691 Check valve/mixer tubing
Appropriate screws and washers also included.
(P/N 68-1247-079)
9-2