Series I Pump
and
Prep Pump
Prior to removing the head, rotate the flag on the top of
the motor so the piston is fully retracted. Remove thumb
nuts or Allen nuts using a 3/16” Allen wrench and slide
off the SST head.
Remove inlet check valve holder with a 1/2” wrench and
slide out SST check valve. Place SST check valve in new
inlet holder noting the arrow on flow direction. Screw new
inlet holder into the head and torque to 75 inch pounds.
Remove one Phillips head screw from
aluminum or SST spacer
Hold pressure down on spacer while removing
the second screw in order to keep from twisting
and breaking the piston
Slide out the spring
and then the ceramic
or SST piston
Place small
amount of grease
on end of piston
(May be SST or
PEEK) and insert
piston into the
pump
mechanism
Slide spring back over the piston
Reinstall the two Phillips head screws
that secure the aluminum or SST spacer
Slide the head over the piston and insert the
two 5/32” Allen nuts or thumb nuts
Working from side to side, lightly snug the nuts.
Once seated, if Allen head nuts, torque the nuts to
30 to 35 inch pounds.
Flow direction
Outlet check
valve and
holder
Flow
Direction
Inlet holder
and check
valve
Note:
arrows on
check
valves
should be
pointing
up
Mechanism
Piston carrier
Mechanism
Piston Carrier
roller bearing
Front
of
pump
Cam
Piston Carrier Shaft
Mechanism
Flag
Electronic
Flag Sensor
UHPLC Pump
Prime/Purge
Valve
Prime/Purge
Port
Self Flush
Pump Heads
Flow
Inlet “T”
UHPLC Pump
Outlet Filter
Assembly
Flow
Check Valve Holders
Single check valves
torque to 130 in/lbs
UHPLC Pump
Outlet Filter Assembly
UHPLC Pump
Outlet Check
Valve Holder
Pump Heads
Flow
Inlet Check
Valve Holder
Procedure for Removing and Installing new seal
Seal Removal and Insertion Tool
Seal
Insertion
End
Seal
Removal
End
5ml High Pressure
Seal
Seal Removal and Insertion Procedure
Insert seal removal tool into head and
remove SST or PEEK back up washer
Seal Removal and Insertion Procedure
Insert seal removal tool into head and press
to one side and gently pull to remove seal
Seal Removal and Insertion Procedure
Clean seal port by inserting a corner of
Scotch-Brite pad into hole and gently rotate.
Rinse and use compressed air to remove any
residue.
Seal Removal and Insertion Procedure
Place new seal on opposite end of extraction
tool with SST spring exposed
Seal Removal and Insertion Procedure
Insert seal straight in making sure not to roll
or pinch the seal’s edge
Piston Replacement
Manually rotate pulley
until piston is in the
retracted position.
Having the piston in the retracted
position decreases the chances the
piston will break when removing the
pump head.
Retracted
Front of
Pump
Not Retracted
Head Removal and Piston Replacement
Remove two Allen nuts or
thumb nuts
Slide head off
Remove Self-flush housing
Slide washer spacer off
Head Removal and Piston Replacement
Series II, III are clear or ceramic
UHPLC piston is black
Lift up piston from saddle
Clean piston with
Scotch-Brite. Rinse and
use compressed air to
remove any residue.
Assemble parts in
reverse order.
Torque nuts to 30 in/lbs or
hand tighten thumb nuts
Head and Self-flush
UHPLC Pump
Pump Head and Self-flush Assembly
UHPLC Pump
High Pressure Head Assembly
Outlet
Inlet
Single outlet
Check valve
Direction of flow
Dual inlet
Check valves
UHPLC Pump
High Pressure Check Valves
Inlet of
check valve
has one
hole
Outlet of
check valve
has three
holes
UHPLC Pump
Inlet and Outlet Check Valves
UHPLC Pump
Upper check valve holder
Single Capsule
torque to 120 in lbs
Lower check valve holder
Duel Capsule
torque to 130 in lbs
UHPLC Pump
Inlet and Outlet Ports on High Pressure Head
Outlet port has
smaller (0.046)
diameter hole
Inlet port has
larger (0.081)
diameter hole
Self Flush sits
behind the high
pressure pump
head
Flow
UHPLC Pump
Self Flush
outlet
Flow
Self Flush
inlet
UHPLC Pump
Self-flush Assembly
Seal
Direction of flow
Outlet
Check Valve
Inlet
Check Valve
UHPLC Pump
Self-flush seal replacement
Seal tool
Clean seal port by inserting
a corner of Scotch-Brite pad
into hole and gently rotate.
Rinse and use compressed
air to remove any residue.
Seal Replacement
Outlet
If the backup washer is still in the seal cavity, insert the flanged end of the
Teflon tool into the head and pull straight out. To remove the seal, reinsert
the flanged end of the Teflon tool into the head, press to the side and pull
straight out and remove the old seal.
Gently clean the head with the Scotch-bright pad to remove any residue.
Also, clean the piston with the pad to be sure the piston surface is clean.
Do not use any other device other than the Teflon tool to remove and
install the seal. Using a different device my scratch the head rendering it
useless.
To insert the new seal, position the seal on other end of the
insertion tool so the stainless spring is positioned out and visible
to the eye.
Position the insertion tool so the seal will be pressed into the
head without crimping, rolling or damaging the side of the seal.
Press the seal into the head until it is firmly seated in the bottom
of the seal port in the head. Reinstall the backup washer. Gently
slide the head onto the pump.
PEEK Head Assembly
Inlet
Outlet
Outlet
Assembly
1/16” Seat Port
(2 Check Valve)
Inlet Assembly
1/8” Seat Port
(2 Check
Valves)
Direction of flow
1/8”
Inlet
Port
1/16”
Outlet Port
Torque holders to 15 in/lbs
Mighty Mini Seal Replacement
Prior to removing the head, rotate the flag on the top of
the motor so the piston is fully retracted. Loosen two
screws on the front of the head using 1/8” Allen wrench
and slide head straight off
Insert flared end of Teflon removal tool into
center of seal, press to one side and pull out.
Place new seal on opposite end of extraction
tool with SST spring facing up.
Press seal straight in. Do not insert seal in at
an angle.
Correct placement of seal
PEEK spacer.
Raised section should
be inserted inward to
hold seal in place.
Incorrect placement of spacer.
Raised section is facing out.
Mighty Mini Check Valve Replacement
Outlet
Inlet
Note arrows on
Check valves
Direction of flow
Piston Replacement
Remove two
Phillips head
screws
Piston Replacement
Remove spring
Piston Replacement
Remove
Piston
Piston Replacement
SST
Washer
PEEK
Spacer
Spring
Piston
Piston Replacement
PEEK
Spacer
Piston
Spring
SST
Washer
Piston Replacement
Slide spacer with SST washer over the piston
and retighten two Phillips Head screws. The
small weep hole should be located at the bottom.
Slide PEEK head back on and working from side
to side, retighten the screws that secure the
head.
Old
New
Old
New
Old
New
Old
New
Old
New
Old
New
Old
New
Old
New
Old
New
Old
New
Old
110 Volt AC
New
12 Volt DC
Old
New
Old
Cooling indicator
New
What is Viscosity? The measure of the resistance of a fluid to
flow.
What is Centipoise (cps)? Water is the standard by which all
fluids are measured. Water is 1 cps @ 70 Degrees F.
Water
Milk
SAE 10 Motor Oil
SAE 20 Motor Oil
SAE 30 Motor Oil
SAE 40 Motor Oil
Castrol Oil, Vegetable Oil
Karo Syrup
Honey
Chocolate Syrup
Ketchup
Mustard
1 cps
3 cps
85-140 cps
140-420 cps
420-650 cps
650-900 cps
1,000 cps
5,000 cps
10,000 cps
25,000 cps
50,000 cps
70,000 cps
Ways to help pump higher viscosity fluids:
• Elevate the fluid
• Increase temperature of the fluid
• Pressurize vessel housing the fluid
• Replace inlet and outlet check valves with
larger diameter check valves
Constant Flow:
Typical pump configuration
Most pumps are constant flow
Pump delivers specified FLOW
Does not take into account pressure
If pressure readout – pulse dampener w/ transducer
Max pressure limited to pressure of pulse dampener
PEEK 5000 psi
SST6000 psi
Constant Pressure:
Typical pump configuration
Pump delivers specified PRESSURE
Does not take into account flow……sometimes?
No pulse dampener, uses Transducer “T” assembly
Some pumps can be set above 9000 psi
Pulse dampener w/ transducer (Constant Flow)
PEEK
Stainless Steel (SST)
Transducer “T” Assembly (Constant Pressure)
Constant Pressure:
Does not take into account flow……sometimes?
Constant pressure pump can be set up to run constant flow.
1)
Press “Mode” button until Ml/Min LED is lit
2)
Set flow rate to desired rate
3)
Press “Mode” button until Hi/Pr LED is lit
4)
Set hi pressure to a number that you know it will not
reach running at the desired flow rate
5)
Press Start/Run
The pump will run up to the set flow rate and stay there.