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Quick Start:

Introduction:

1. If you are familiar

with installation of Zenith pumps please read over the list of

Do’s and Don’ts on page 15.

2. Special care must be taken:

The C-9000 pumps are easily damaged in handling

due to the soft metal used in their construction.

3. It is strongly recommended

that you thoroughly read through this entire manual

before you begin installation or any servicing of the C-9000 pumps.

This manual was specifically written

for the 0.3, 0.6, 1.2, 2.4, 4.5, and 9.0
cc/rev C-9000 pumps. It will guide you
through the process of maintaining and
caring for your pump. 

C-9000 series pumps are similar in

concept to other Zenith pumps, however
several key physical aspects differ in ways
which will affect the care and maintenance
of the product. The following literature will
discuss, in detail, how to care and main-
tain a well running and efficient pump in
order to maximize the productivity and
effectiveness of your Zenith product.

Below are a few key points which

must be considered in order to prevent
damage to the product during handling,
installation and cleaning. 

Most importantly

1.

Use only brass or plastic tools to pry
on the C-9000 pump components;

2.

If you must hammer on the pump, use
a clean plastic hammer (no imbedded
metal chips, etc.) and tap lightly;

3.

Do not perform maintenance on the
silicon carbide sleeve bearings. 

4.

Use force, not impact, to move 
stubborn parts. 

Again, the C-9000 pumps are not as

hard as the tools found in most mainte-
nance areas, and can be damaged by
common steel tools. This is one feature of
the pump that must be taken into consid-
eration in the installation, disassembly
and assembly procedures.

The specially designed bearings

require an interference fit installed at the
Zenith plant and should not be removed
by the customer. These sleeve bearings
are extremely brittle and fragile, and can
be easily broken resulting in multiple part
damage and high replacement cost. See

Figure 1. 

The sleeve bearings should not

need to be replaced during routine main-
tenance. 

If you follow the above suggestions

and the Do’s and Don’ts list (page 15),
you will be able to maintain a C-9000
pump with little chance of damage.

Figure 1

Summary of Contents for C-9000

Page 1: ...Zenith Pumps Installation Care and Maintenance Zenith Corrosive Duty Gear Pumps C 9000 Gear Pumps...

Page 2: ...re assured even under varying conditions of temperature viscosity and pressure Precision Construction Ground and lapped components allow for operating clearances to 00015 and provide high volumetric e...

Page 3: ...ust be considered in order to prevent damage to the product during handling installation and cleaning Most importantly 1 Use only brass or plastic tools to pry on the C 9000 pump components 2 If you m...

Page 4: ...e to the pump inlet when metering high viscosity fluids to prevent cavitation 10 Install a pressure regulating valve downstream of the pump if necessary to ensure there is at least 20 psig differentia...

Page 5: ...e system the following suggestions are recom mended to prevent pump damage 1 Minimize the differential pressure across the pump ports to less than 100 psi but not less than 20 psi 2 Reduce the pump sp...

Page 6: ...a given orifice For de rating the pump this orifice is the gear clearance Differential pressure forces the fluid through this clearance at a steady rate regardless of the pump speed Thus the slip flow...

Page 7: ...magnets near one another unless assembling the pump to the system Both rotors should be fastened to their respective shafts before bringing them into proximity Do not place the magnets near any elect...

Page 8: ...system for example magnetically driven pumps with adapter plates have been disengaged from the housings Note As parts are disassembled place them carefully on a clean surface such as a soft cloth See...

Page 9: ...ry Take care not to press on the gears or the edges of the gear pocket Caution Do not allow the gears to be lifted out of the gear plate They may drop causing damage to the gear teeth See Figure 5 9 R...

Page 10: ...e Assembly 8 O Ring 33 O Ring 34 Tandem Lip Seal 13 Dryseal Type Plug 42 Interpret per ASME Y14 5M 1994 Square Key 17 18 SHCS M4x 0 7 11 Seal Housing 23 Sleeve Bearing 16 Retaining Ring 24 Sleeve Bear...

Page 11: ...cleaning method Abrasive dust is larger in size than the pump clearances Always use clean lint free rags or disposable towels and compressed air to clean components Common paper towels are not accept...

Page 12: ...igned 1 Insert the o rings 34 into the grooves on the front and rear plates 8 7 Replace these o rings if they have been damaged 2 Place the front plate 8 in a vise that has soft protective jaws Grip t...

Page 13: ...plate Lower the barrier cap into position over the inner magnet If applicable mount the barrier cap by installing tightening the eight socket head screws Assembly is now complete 13 Mechanical Seal In...

Page 14: ...Entrained particle Disassemble and clean pump replace any damaged parts 4 Possible internal Disassemble and clean damage pump replace damaged parts Consult factory Excessive seal 1 Worn seal face s Re...

Page 15: ...sers that won t scratch Don ts Don t pry tap scratch scrape or otherwise work on the pump or its components with steel tools Don t assume that because it is steel you can t damage the pump in handling...

Page 16: ...of operating conditions and applications for these products or systems the user through its own analysis and testing is solely responsible for making the final selection of the products and systems a...

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