Kimray GLYCOL PUMP Owner's manual

GLYCOL PUMP

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All contents of this publication including illustrations are believed
to be reliable. And while efforts have been made to ensure
their accuracy, they are not to be construed as warranties for
guarantees, express or implied, regarding Kimray products or
services described herein or their use or application. All sales
are governed by our terms and conditions, which are available
on request.
Kimray reserves the right to modify or improve the designs or
specications of such products at any time without prior notice.
© 2018 Kimray Inc.

GLYCOL PUMP
3
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Repair Guide
Contents
Introduction 4
DISASSEMBLY
Kimray Tools Used 6
Pressure Relief 7
Removing Suction and Discharge Blocks 7
Piston Discharge Piping 9
Legs 9
Main Piston Valve Housing 10
Control Valve Assembly Tubing 10
Pilot Piston Valve Housing 10
Cylinders 11
Pilot Piston Caps 13
Pilot Piston 13
Pilot Piston Valve Housing 13
Cleaning 14
Special Cases 14
INSPECTING PARTS
Piston Rod Assembly 15
Pistons 15
Cylinders 16
Piston Rod Seal Retainer 16
Pilot Piston 16
Check Valve Caps 17
Check Valve 17
Suction Block 17
Discharge Block 18
Main Piston Body 18
Suction and Discharge Seats 18
Pilot Piston Bearing 19
Piston Rod Gland 19
Pilot Piston Valve Housing Repair 20
ASSEMBLY
Pilot Piston Assembly 21
Cylinders Assembly 22
Pilot Piston Valve Housing 24
Discharge and Suction Block Assembly 27
Needle Valve Assembly 30

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GLYCOL PUMP
4
Repair Guide
When a person needs to repair a Kimray glycol pump
and has never done so before, it can appear to be the
proverbial “can of worms” when it is disassembled and the
many parts and O-Rings are exposed. Even with a parts
drawing, it can be intimidating.
Nothing is as good as experience and hopefully, this
repair manual will help simplify the process. Years of
valuable experience was used to put together this manual
that details the disassembly, the examination of parts, and
the assembly of the Kimray Glycol Pump.
If these steps are followed, the pump should be “as good
as new” and ready for service. Also after going through
this manual, it will be easy to see why only replacing the
O-Rings will probably not give any acceptable length of
service.
There are typically four areas that can cause pump failure.
INTRODUCTION
I. GLYCOL CONTAMINATION
This can be caused by various things such as compressor
oils carrying over into the glycol that may cause O-Ring
swelling. Condensate (drip gas) can be another. If glycol
contamination is a constant and uncorrectable problem,
there are other elastomers available.
II. HEAT
The Kimray Glycol Pump comes standard from the factory
with Buna elastomers good for up to 200 degrees F.
Heat exchangers are essential in a dehydrator system
so that the dry glycol entering the pump is less than 200
degrees to prevent breaking down the elastomer. This
also enhances the dehydration process.
However, if there are continuing temperature related
failures, there are other materials available for elastomers
that will allow the pump to be used in higher temperatures.
III. FILTRATION
A “Y” strainer or other LOW PRESSURE filter is
recommended in the “dry” or “lean” suction line coming
from the surge (storage) tank to the pump. This will
catch any large particles that might cause the pump to
malfunction or damage it.
A HIGH PRESSURE filter is recommended in the “wet” or
“rich” glycol line coming from the bottom of the absorber
to the pump. There are several manufactures and types
of these filters.
This filter will catch smaller particles suspended in the
glycol such as salt and sand.
All filters need to be checked frequently and changed if
needed.
IV. IMPROPER REPAIR
Even with filtration, parts within the pump will wear over
time. Metal parts need to be examined very closely every
time a repair is done. Worn metal parts can cause lost
tolerances and therefore cause lost seals. Replacing
O-Rings ONLY , usually will not give long service. Piston
rod, pilot piston, cylinder, and piston surfaces are critical.
Anywhere there is an O-Ring surface should be checked
closely.
To get the long service you have come to expect from
Kimray products, always use genuine Kimray parts
when doing repairs. Remember, parts made to less than
Kimray specifications don’t save you money!

GLYCOL PUMP
5
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Repair Guide
DISASSEMBLY
KIMRAY TOOLS USED
SEAT REMOVAL TOOL
PART NUMBER PUMP SIZE
615 4020, 2020, 1720
614 9020, 5020, 21020,
10020, 45020, 20020
SEAL RETAINER TOOL
PART NUMBER PUMP SIZE
4456 4020, 2020, 1720
4457 9020, 5020
4458 21020, 10020
4459 45020, 20020
INSERT TOOLS FOR SUCTION SEAT
PART NUMBER PUMP SIZE
1542 4020, 2020, 1720
1543 9020, 5020
1544 21020, 10020
1545 45020, 20020