IVEK SPLIT CASE PUMP MODULE 092122 Series User manual

SPLIT CASE PUMP MODULE Page 7-1
15 July, 2019 IVEK Corp. P07R002P
Table Of Contents
Section
Description
Page #
7.
Split Case Pump Module...........................................................................................
7-2
7.1
Description ............................................................................................................
7-2
7.2
Operation ..............................................................................................................
7-2
7.2.1
Piston/Cylinder Set .........................................................................................
7-3
7.2.2
Split Case .......................................................................................................
7-3
7.3
Installation .............................................................................................................
7-3
7.4
Options .................................................................................................................
7-4
7.4.1
Special Piston/Cylinder Bore Clearances or Modifications .................................
7-4
7.4.2
Rinse Gland ....................................................................................................
7-5
7.4.3
Cartridge Heater Ports/Cartridge Heaters ..........................................................
7-5
7.4.4
Fittings ...........................................................................................................
7-5
7.5
Maintenance ..........................................................................................................
7-5
7.5.1
Preventative Maintenance ................................................................................
7-5
7.5.2
Storage Options. .............................................................................................
7-6
7.5.3
Extended Storage ............................................................................................
7-6
7.5.4
End Cap And Seal Assembly ...........................................................................
7-6
7.5.5
Assembly/Disassembly Procedures .................................................................
7-7
7.6
Problem Guide ....................................................................................................
7-11
7.6.1
Piston Frozen In The Cylinder ........................................................................
7-11
7.7
Specifications ......................................................................................................
7-11
7.7.1
Volume .........................................................................................................
7-11
7.8
Model Number .....................................................................................................
7-11
7.9
Illustrated Parts Breakdown .................................................................................
7-12

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7. SPLIT CASE PUMP MODULE
7.1 DESCRIPTION (Figure 7.1)
The Split Case Pump Module, hereafter referred to as Pump Module, is comprised of a ceramic piston and cylinder set,
two castellated sleeves and a split case assembly. Certain components of the Pump Module are in the direct liquid path.
The Pump Module has been designed to be easily disassembled and detached from the Motor/Base Module for ease of
cleaning, decontamination and sterilization.
The Pump Module's piston/cylinder set provides positive liquid displacement. Table 7.1 describes the total volumetric
output of this pump.
WARNING
Never remove a safety cover while the motor is running. Moving parts are located under these covers. Physical
harm to individuals is possible.
7.2 OPERATION
When the Pump Module is mounted on the Motor/Base Module, the piston is driven by a spherical bearing mounted within
a rotating spindle. This drive arrangement imparts both reciprocating and rotary motion to the piston. The magnitude of
the piston's stroke is adjustable by varying the angle of the axis of the pump head relative to the axis of the motor drive
shaft. This displacement range is infinitely adjustable within the pump specifications (refer to Table 7.1). The displacement
adjustment is easily made and recorded as a setting taken from the Motor/Base Module's vernier scale. Repeatability of
0.1% is obtainable once the stroke length is established.
On each rotation of the piston, the ports are opened alternately and exclusively, first to the inlet and then to the outlet.
During the rotation, the limited piston flat creates the void that allows the flow from only one port at a time, positively
displacing the liquid. The piston flat acts as a rotary valve, completing one pressure stroke and one suction stroke per
revolution as the pump rotates and reciprocates synchronously.
The end of the piston is never drawn back beyond the inlet and outlet ports in normal operation. The piston flat allows only
one port to communicate with the interior chamber of the pump cylinder at any one time. The effect is positive mechanical
valving, eliminating the need for check valves under normal operations.
The pump, which cannot be driven by either inlet or outlet pressure, essentially acts as a closed valve when the unit is not
in operation.
Castellated
Sleeve
Figure 7.1 Split Case Pump Module
Split Case
Piston

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The Pump Module can easily and accurately be set over the full displacement range. By changing the stroke length
through the angular adjustment of the metering head, displacement is changed from zero to the maximum. Once the
displacement is set, Pump Module maintenance can be performed without affecting the displacement.
7.2.1 Piston/Cylinder Set
The piston/cylinder set is constructed of high density alumina or magnesium stabilized zirconia ceramic. The ceramics are
compatible with most acids and bases. The precision piston/cylinder set has a radial clearance between the piston and
cylinder wall of approximately 1.3 micron (.00005") which minimizes fluid slip.
The ceramic piston operates within the ceramic cylinder with no lubrication other than the liquid being dispensed or metered. The
natural crystalline structure of the ceramics display zero porosity ensuring zero retention and carryover of one liquid to the next.
The combination of the ceramic material’s mechanical and thermal stability allows it to be machined and operated with a
close running clearance. This means that no compliant dynamic seals are needed, eliminating parts requiring frequent
replacement in traditional pump designs.
7.2.2 Split Case
The stainless steel split case design provides ease of disassembly for cleaning and maintenance. The ceramics, end cap
seal, and fitting sets are all serviceable parts. The ceramics are easily accessed by removing the upper half of the split
case either while attached to the Motor/Base Module or after its removal.
NOTE
The upper and lower halves of the case are matched parts and cannot be interchanged.
7.3 INSTALLATION
Installing the Pump Module into the Motor/Base Module involves the following: (refer to Figure 7.2) Refer to Section
7.5.5.1 for removal procedure.
CAUTION
Make sure the power is off and all hazardous liquids have been flushed from the system prior to performing any
disassembly or assembly procedures.
Spherical Pump Drive Mounting Swing Cap
Spindle Bearing Piston Module Pin Key Plate
Screws
Step 1 Step 2 Step 3 Steps 4 and 5
Figure 7.2 Split Case Pump Module Installation

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Lubricate the drive pin with IVEK Spindle Bearing Lubricant (IVEK part number 052046) prior to assembly. Failure
to lubricate the drive pin may result in damage to the Pump Module and Motor/Base Module.
1. Rotate the spindle on the Motor/Base Module so the spherical bearing is at the 3 O'clock position.
2. Extend the piston, which is housed in the Pump Module, approximately 2/3 of the way out of the cylinder.
3. Slide the drive pin, which is pressed into the piston end cap, into the center bore of the spherical bearing.
4. Position the Pump Module on the swing plate with the locating pin of the swing plate inserted into the slot of the
Pump Module mounting key.
5. Secure the Pump Module to the swing plate by tightening the two #10 socket head cap screws on the swing plate.
NOTE
Figure 7.3 shows the inlet orientation of the Pump Module on both the Single Ended and Double Ended
Motor/Base Modules.
7.4 OPTIONS
IVEK Corporation offers a variety of options to best meet the customers’ needs. Following is a list and description of available
options for the Pump Module. Refer to the Title Section of this manual for the list of options provided with this system.
7.4.1 Special Piston/Cylinder Bore Clearances or Modifications
For certain applications, special clearances are required for the piston/cylinder bore. IVEK Corporation determines these
clearances by performing application tests using the application fluid. Contact IVEK Corporation for more information.
For certain applications, special machined modifications are required for the piston/cylinder. IVEK Corporation determines these
modifications by performing application tests using the application fluid. Contact IVEK Corporation for more information.
Inlet
Note connector
position Inlet
Inlet
Figure 7.3 Split Case Pump Module Orientation

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7.4.2 Rinse Gland
This option provides for rinsing the rear portion of the piston with a liquid passing at a low flow rate through the annular
gland. This precludes migration of the metered liquid beyond this groove, preventing it from reaching the rear of the pump.
This also reduces the chance of the piston binding in the cylinder.
7.4.3 Cartridge Heater Ports/Cartridge Heaters
Optional cartridge heater ports and cartridge heaters are available. IVEK Corporation will assist the user in determining
the optimum heater specification. Pump head heating is used to maintain liquid temperature. Heating is not used to
increase liquid temperature.
7.4.3.1 Cartridge Heater Ports
Optional cartridge heater ports can be provided in the pump case to keep the Pump Module at an elevated temperature.
The 1/ 4" diameter ports are located in the pump case 180Oapart.
7.4.3.2 Cartridge Heaters
Optional cartridge heaters can be mounted in the cartridge heater ports. A temperature controller and thermocouple may
also be provided. If a controller is provided, instructions for the controller are provided in Chapter 11.
7.4.4 Fittings
Fittings are available with the Pump Module. Chapter 9 lists the IVEK part numbers for the available fittings, associated
seals and sleeves when required. Not all fittings shown are applicable to the Split Case Pump Module.
7.5 MAINTENANCE
CAUTION
Never connect or disconnect the cable from the Motor/Base Module connector while power is on. Damage to the
equipment may result.
7.5.1 Preventative Maintenance
The ceramic components for the Pump Module have been designed to last for millions of repetitions without wear.
Preventative maintenance should include careful handling of the piston and cylinder when they have been removed from
the Pump Module. Always take great care when removing the piston from the cylinder and replacing the piston into the
cylinder. Never clean ceramic parts in such a way that they can vibrate against each other. This could cause chipping.
The piston and cylinder are a matched set and should always be kept together. Each piston and cylinder are identified
with a number which match the parts as a set.
CAUTION
Ceramic piston/cylinder sets are particularly sensitive to neglect and may “freeze” if allowed to dry out without
adequate cleaning.
7.5.1.1 General Applications; Routine Cleaning Procedure.
1. Disconnect inlet tubing from process liquid supply container.
2. Cycle pump in continuous mode until remaining process liquid has been purged from the Pump Module liquid path.

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3. Connect the inlet tubing to an appropriate cleaning solution supply container.
4. Cycle pump in continuous mode at a high volume and rate to flush the cleaning solution through the entire liquid path.
NOTE
Routine flushing with a compatible solution after shutdown may provide sufficient cleaning for many applications.
7.5.2 Storage Options.
Storage refers to any extended time that the system remains idle. The main concern is liquid drying in the piston/cylinder
area, causing the piston to freeze in the cylinder. The duration of idle time requiring storage procedures is based on the
liquid being pumped, the Pump Module configuration, and the operating environment. The system can either remain
wetted with cleaning liquid, disassembled, or a liquid loop can be created.
7.5.2.1 Wetting With Cleaning Liquid
This option involves leaving the liquid circuit and Pump Module assembled in place. Load the liquid circuit with a compatible
cleaning liquid and leave the system wet until the next use when the stored liquid can be purged during setup for operations.
7.5.2.2 Disassembling
If it is desired not to leave cleaning liquid in the system, after rinsing with cleaning liquid as described in Section 7.5.1.1,
empty the system of cleaning liquid as described in Section 2.7.
Disassemble the liquid circuit and Pump Module, remove the piston from the cylinder and store the component parts disassembled until
the pump is again required. The instructions for disassembling the Pump Module are found in Section 7.5.5 of this chapter.
NOTE
If applicable, the disassembled liquid circuit and Pump Module components may be immersed and soaked or
further cleaned in an ultrasonic cleaning device using a compatible cleaning solution.
7.5.2.3 Liquid Loop
Fill a loop of flexible tubing with a compatible cleaning liquid or other chemical that will thin or neutralize the last liquid
pumped. Connect one end of the tube to the pump inlet port and the other to the outlet port. Cycle the pump a few times
in any operational mode to insure the piston and cylinder are wetted by the cleaning liquid. With this loop positioned
above the pump head, the ceramic surfaces and seal areas will stay moist and mobile for extended idle periods.
7.5.3 Extended Storage
If a pump is to be stored assembled for an extended period of time, it is recommended that after cleaning, the piston and
cylinder be dried before reassembly or stored separately in protective packaging. Wet components will have a tendency to
bind after materials have evaporated, leaving residue.
7.5.4 End Cap And Seal Assembly
The end cap and seal at the front of the Pump Module serve to contain liquid within the pump.
When properly maintained in a clean condition, the original seal may be expected to last for extended periods. If removed
for any reason, the seal should be carefully cleansed of all foreign particles prior to reassembly. The seal seating area
must also be free of particles and scratches to prevent leaks when reassembled.

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7.5.5 Assembly/Disassembly Procedures (Refer to Figure 7.5)
The Pump Module contains the following replaceable parts.
•End Cap, End Cap Seal and O-Ring (1, 9, 11)
•Key (6)
•Cylinder Locating Pin (5)
•Cylinder and Piston Fabrication (7,8)
•Slotted Ring (4)
•Castellated Sleeve (12)
CAUTION
Make sure the power is off and all hazardous liquids have been flushed from the system prior to performing any
disassembly or assembly procedures.
7.5.5.1 Pump Module Removal (Figure 7.4)
Removing the Pump Module from the Motor/Base Module involves the following. Refer to Section 7.3 for the installation procedure.
1. Rotate the spindle on the Motor/Base Module so the spherical bearing is at the 3 O'clock position.
2. Loosen the two #10 socket head cap screws securing the Pump Module to the swing plate.
3. Lift the Pump Module and pull up and away from the swing plate until the piston fabrication is approximately 2/3 of
the way out of the cylinder.
4. Move the Pump Module laterally until the pin in the piston fabrication slides out of the spherical bearing.
7.5.5.2 End Cap, End Cap Seal and O-Ring (Figure 7.5 Items 1, 9, 11)
Disassembly
1. Remove end cap, end cap seal, and O-ring (1, 9, 11) from split case pump fabrication (3) by placing the spanner
wrench (IVEK part# 142017, provided with equipment) on end cap (1) and turning in a counterclockwise direction.
2. Remove end cap, end cap seal, and O-ring (1, 9, 11).
NOTE
If installing the same end cap seal and/or O-ring, make sure it is clean and free of scratches before installing.
Spherical
Cap
Swing
Drive
Piston Mounting
Pump
Bearing
Screws
Plate
Pin
Key
Module
Steps 1 and 2 Step 3 and 4
Figure 7.4 Split Case Pump Module Removal

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Assembly
For O-ring Seal
1. Position O-ring (11) in end cap seal (9) and position in end cap (1) as shown in Figure 7.5.
For Teflon Seal
1. Position O-ring (11) in end cap seal (9) and position in end cap (1) with O-ring against end cap (1).
2. Position end cap (1) on split case pump fabrication (3) and finger tighten by turning in a clockwise direction.
3. Finish tightening using spanner wrench supplied.
7.5.5.3 Key (Figure 7.5 Item 6)
Disassembly
1. Remove the Pump Module from the Motor/Base Module as described in section 7.5.5.1.
2. Remove two 8 - 32 x .25" long socket head cap screws (10) securing key (6) to split case pump fabrication (3).
3. Remove key (6).
Assembly
1. Position key (6) on split case pump fabrication (3) and secure with two 8 - 32 x .25" long socket head cap screws (10).
2. Install the Pump Module on the swing plate as described in section 7.4.
Figure 7.5 Split Case Pump Module
1
2
9
11
4
12
7
8
12
10
6
3
5
13
3

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7.5.5.4 Cylinder Locating Pin (Figure 7.5 Item 5)
Disassembly
1. Remove the Pump Module from the Motor/Base Module as described in section 7.5.5.1.
2. Remove the fitting sets (12) from split case pump fabrication (3) by placing the spanner wrench (provided with
equipment) on the fitting retainer and turning in a counterclockwise direction.
3. Remove end cap, end cap seal and O-ring (1, 9, 11) from split case pump fabrication (3) by placing the spanner
wrench (provided with equipment) on end cap (1) and turning in a counterclockwise direction.
4. Loosen the four captive slotted screws (13) securing the two halves of split case pump fabrication (3) and remove
the upper half of split case pump fabrication (3). Lanyard (2) will keep the two Pump Module halves together.
5. Remove slotted ring (4).
6. Remove piston fabrication (8) and cylinder (7) from split case pump fabrication (3).
7. Remove two socket head cap screws (10) securing key (6) to split case pump fabrication (3) and remove key (6).
8. Using a punch smaller than .125" (3.175mm), gently push cylinder locating pin (5) out of the lower half of split case
pump fabrication (3).
Assembly
1. Position key (6) on split case pump fabrication (3) and secure with two socket head cap screws (10).
2. Place cylinder locating pin (5) in position and gently press in until it contacts key (6).
3. Install the cylinder and piston fabrication, (7, 8) by aligning over the cylinder locating pin (5) in lower half of split
case pump fabrication (3).
4. Install slotted ring (4) by sliding over piston fabrication (8).
5. Position the upper half of split case pump assembly (3) on the lower half and secure with the four slotted screws (13).
6. Place end cap, end cap seal and O-ring (1, 9, 11) over end of cylinder (7). Finger tighten only.
7. Position the two fitting sets (12) on split case pump fabrication (3). Finger tighten only.
8. Tighten end cap (1) on split case pump fabrication (3) using spanner wrench provided.
9. Tighten fitting sets (12) to a maximum of 1.4 N-M (12 in. lbs.) the two fitting sets (12) using spanner wrench
provided. Refer to Figure 7.6.
10. Install the Pump Module on the swing plate as described in section 7.3.
7.5.5.5 Cylinder And Piston Fabrication (Figure 7.5 Items 7,8)
Disassembly
1. Remove the Pump Module from the Motor/Base Module as described in section 7.5.5.1.
2. Remove the fitting sets (12) from split case pump fabrication (3) by placing the spanner wrench (provided with
equipment) on the fitting retainers and turning in a counterclockwise direction.
Customer supplied
torque wrench with
1/4" socket adapter
Figure 7.6 Torque Setup for Fittings (12)

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3. Remove end cap, end cap seal and O-ring (1, 9, 11) from split case pump fabrication (3) by placing the spanner
wrench (provided with equipment) on end cap (1) and turning in a counterclockwise direction.
4. Loosen the four captive slotted screws (13) securing the two halves of split case pump fabrication (3) and remove
the upper half of split case pump fabrication (3). Lanyard (2) will keep the two Pump Module halves together.
5. Remove slotted ring (4).
6. Remove piston fabrication (8) and cylinder (7) from split case pump fabrication (3).
Assembly
1. Install the cylinder and piston fabrication, (7,8) by aligning over the cylinder locating pin, (5) in lower half of split
case pump fabrication (3).
2. Install slotted ring (4) by sliding over piston fabrication (8).
3. Position the upper half of split case pump assembly (3) on the lower half and secure with the four captive slotted
screws (13).
4. Place end cap, end cap seal and O-ring (1, 9, 11) over end of cylinder (7). Finger tighten only.
5. Position the two fitting sets (12) on split case pump fabrication (3). Finger tighten only.
6. Tighten end cap (1) on split case pump fabrication (3) using spanner wrench provided.
7. Tighten a maximum of 1.4 N-M (12 in. lbs.) the two fitting sets (12) using spanner wrench provided.
8. Install the Pump Module on the swing plate as described in section 7.3.
7.5.5.6 Slotted Ring (Figure 7.5 Items 4)
Disassembly
1. Remove the Pump Module from the Motor/Base Module as described in section 7.5.5.1.
2. Remove the fitting sets (12) from split case pump fabrication (3) by placing the spanner wrench (provided with
equipment) on the fitting retainers and turning in a counterclockwise direction.
3. Remove end cap, end cap seal and O-ring (1, 9, 11) from split case pump fabrication (3) by placing the spanner
wrench (provided with equipment) on end cap (1) and turning in a counterclockwise direction.
4. Loosen the four captive slotted screws (13) securing the two halves of split case pump fabrication (3) and remove
the upper half of split case pump fabrication (3). Lanyard (2) will keep the two Pump Module halves together.
5. Remove slotted ring (4).
Assembly
1. Install slotted ring (4) by sliding over piston fabrication (8).
2. Position the upper half of split case pump assembly (3) on the lower half and secure with the four captive slotted
screws (13).
3. Place end cap, end cap seal and O-ring (1, 9, 11) over end of cylinder (7). Finger tighten only.
4. Position the two fitting sets (12) on split case pump fabrication (3). Finger tighten only.
5. Tighten end cap (1) on split case pump fabrication (3) using spanner wrench provided.
6. Tighten a maximum of 1.4 N-M (12 in. lbs.) the two fitting sets (12) using spanner wrench provided.
7. Install the Pump Module on the swing plate as described in section 7.3.
7.5.5.7 Castellated Sleeve (Figure 7.5 Items 12)
Disassembly
1. Remove the fitting sets (12) from split case pump fabrication (3) by placing the spanner wrench (provided with
equipment) on the fitting retainers and turning in a counterclockwise direction.