1
A. GENERAL INSTRUCTIONS
The instructions found herein cover the disassembly, assembly and parts identification of CIG single
mechanical seal pumps.
NOTE:
Individual contracts may have specific provisions that vary from this manual. Should any questions arise
which may not be answered by these instructions, refer to the Imo
General
Installation
Operation,
Maintenance,
and
Troubleshooting
Manual,
(No.
SRM00046)
,
provided with your order. For further
detailed information and technical assistance please refer to Imo Pump, Technical/Customer Service
Department, at (704) 289-6511.
This manual cannot possibly cover every situation connected with the installation, operation, inspection and
maintenance of the equipment supplied. Every effort was made to prepare the text of the manual so that
engineering and design data is transformed into the most understandable wording. Imo Pump must assume the
personnel assigned to operate and maintain the supplied equipment and apply this instruction manual have
sufficient technical knowledge and are experienced to apply sound safety and operational practices which may
not be otherwise covered by this manual. In applications where equipment furnished by Imo Pump is to become
part of processing machinery, these instructions should be thoroughly reviewed to ensure proper fit of said
equipment into overall plant operational procedures.
WARNING
If
installation,
operation
and
maintenance
instructions
are
not
correctly
and
strictly
followed
and
observed,
injury
to
personnel
or
serious
damage
to
pump
could
result.
Imo
Pump
cannot
accept
responsibility
for
unsatisfactory
performance
or
damage
resulting
from
failure
to
comply
with
instructions.
B. INTRODUCTION
This instruction manual covers CIG single mechanical seal pumps. This series of pumps has been designed for use in
hydraulic, lubricating seal and fuel oil applications. The model and design construction of each pump can be identified
by the designator code on the pump nameplate. Definitions of model designators are identified in Figure 1.
C. DESCRIPTION OF EQUIPMENT
The CIG single mechanical seal pumps are positive displacement, internal gear pumps consisting of a single shaft that
runs through the center of pump housings. This shaft drives the external gears (pinion gears) which in turn drives the
internal gears (ring gears). Fluid is carried between the internal and external gear teeth of each pump and is
discharged as the teeth mesh. The pinion and ring gears are separated in each pump by a crescent which is a sealing
element in the pump between inlet and discharge ports.
D. PUMP MODEL IDENTIFICATION
This instruction manual covers the Imo CIG single mechanical seal pumps.
The model of each pump is identified on the pump nameplate. Refer to Figure 1 for instructional keys when using this
manual.
E. ORDERING INSTRUCTIONS
When corresponding with Imo Pump regarding CIG Single Series pumps, refer to the pump nameplate, this instruction
manual, and the assembly drawing as instructed below:
1. From pump nameplate, record the pump model number. Also record the manufactured lot number and date (these are
stamped on the housing near the nameplate).
2. Record instruction manual number, revision and date.
3. From the instruction manual, record the figure numbers that apply to the replacement part(s)
