14
9.2 Replacing the Reagent Pump
(Kit #28167S)
To replace the reagent pump on the CSM instrument:
1. Loosen the 2 screws that hold the reagent pump bracket to the
back panel.
2. Lift the bracket assembly off of the screws.
3. Unscrew the colored fittings from the reagent pump.
4. Unplug the wire connection from the reagent pump.
5. Unscrew the 2 screws holding the reagent pump to the mounting
block.
6. Install new reagent pump to the mounting block using the 2 screws
removed in Step 5.
7. Plug wire connections into new reagent pump.
8. Screw in the colored fittings to new reagent pump.
9. Screw the reagent pump bracket to the back panel using the 2
screws that were loosened in Step 1.
Loosen screws.
Unscrew colored fittings.
9.3 Replacing the Peristaltic Pump
(Kit #28141S)
To replace the peristaltic pump on the CSM instrument:
1. Push tabs in on sides and pull up to
remove the pump head from the base.
2. Remove existing clamps and detach
hoses. Take care to keep hose ends in
good condition and note which hose
is connected to the IN and which is
connected to the OUT; these will need
to be reattached to the new pump head
in the same order.
3. Based on the arrows between the pump
head fittings, reattach the IN hose to the
IN pump head fitting and the OUT hose to
the OUT pump head fitting. Secure using
the new clamps.
4. Align the cutout of the pressure rotor with the cutout
in the base.
5. Lower the new pump head down to securely reattach it to the base.
9.4 Replacing the Pressure Regulator
Assembly (Kit #28190S)
To replace the pressure regulator assembly on the CSM instrument:
1. Turn off water to the CSM instrument.
2. Loosen the screws on the bracket connecting the pressure regulator
to the back panel.
3. Lift bracket and attached components from back panel.
4. Loosen the water inlet tube (orange) from the pressure regulator.
5. Remove the panel nut that holds the regulator in place.
6. Lower the regulator down through the bracket.
7. Remove fittings (x2) from inlet and outlet of regulator. Be sure to
note “IN and “OUT” positions of the regulator.
8. Clean off the old fittings and apply new Tellon tape to the
threads of the fittings.
9. Reinstall the fittings into the new regulator in the same orientation
as the original. Be sure the “IN” and “OUT” positions are orientated
the same as the old regulator. “IN” and “OUT” are labeled on the
pressure regulator.
Panel
Nut
Water Inlet
Tube
Remove Inlet
Fitting and
Clean
Remove
Outlet Fitting
and Clean
Inlet Label
(White Fitting,
Orange
Connector,
Clear Tubing)
Outlet Label
(Black Fitting,
Black Tubing)
1
3
5
4
7
7
9
9
Take note of the orientation of the check valves and tubing. The
placement of these items depends on the orientation of the pump
being replaced. To change the orientation of the new pump, loosen
thumb screw from the pump, remove check valves and tubing and
route to the opposite side of pump. Tighten thumb screw. The check
valve always needs to be towards the front of the pump when looking
into the enclosure from the front.
NOTICE
Unplug wire connection
Unscrew 2 screws
Thumb Screw
Note routing of tubing based on
orientation of pump
4
5
