Parker AHL Series User manual

AHL Series Pump
Air Driven, High Pressure Liquid Pump
Operation and Maintenance Manual
Manual: 02-9242ME | April 2022

Operation & Maintenance Manual | 04/2202-9242ME: AHL Series Pump 2
Model # Order #
Serial # Mfg. Date
Drawing # Complete information above for future reference.
FAILURE, IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS AND/OR SYSTEMS DESCRIBED HEREIN
OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE.
This document and other information from Parker Hannifin Corporation, its subsidiaries and authorized distributors provide product and/or system
options for further investigation by users having technical expertise. It is important that you analyze all aspects of your application and review the
information concerning the product or system in the current product catalog.
Due to the variety 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 and assuring that all performance, safety and warning requirements of the
application are met.
The products described herein, including without limitation, product features, specifications, designs, availability and pricing, are subject to change
by Parker Hannifin Corporation and its subsidiaries at any time without notice.
ALL PARKER VALVES MUST PASS A RIGID OPERATIONAL AND LEAKAGE TEST BEFORE LEAVING THE FACTORY. IT IS RECOMMENDED AFTER
ANY REASSEMBLY, THE VALVE SHOULD BE TESTED BY THE USER FOR OPERATION AND LEAKAGE. IF THESE INSTRUCTIONS ARE NOT FULLY
COMPLIED WITH, THE REPAIRED PRODUCT MAY FAIL AND CAUSE DAMAGE TO PROPERTY OR INJURY TO PERSONS. PARKER HANNIFIN
CANNOT ASSUME RESPONSIBILITY FOR PERFORMANCE OF A CUSTOMER SERVICED VALVE.
WARNING
!
Live Chat Support is available from www.parker.com/IPD when the Chat icon “ ” is visible on screen.
Parker Instrumentation Products Divison (IPD)

02-9242ME: AHL Series PumpOperation & Maintenance Manual | 04/22 3
Product Drawings
Typical Pump Cross Sectional View .................................................................................... 4
AHL Pump Dimensional View ............................................................................................. 5
Operation & Maintenance Information
1.0 Introduction ............................................................................................................ 6
2.0 Meaning of Safety Words.......................................................................................... 6
3.0 Product Specification............................................................................................... 6
4.0 Unpacking .............................................................................................................. 6
5.0 Tools ...................................................................................................................... 6
6.0 Installation .............................................................................................................. 7
6.1 Compressed Air Supply ........................................................................................... 7
6.2 Liquid Section ......................................................................................................... 8
7.0 Pump Start-Up ........................................................................................................ 8
8.0 Process Media ........................................................................................................ 9
9.0 Pump Functionality ................................................................................................ 10
10.0 Suggested Maintenance ........................................................................................ 10
Troubleshooting Information
11.0 Repair Kit Options ................................................................................................. 11
12.0 AHL Series Drawings ............................................................................................. 12
13.0 Trouble Shooting-Pneumatic Section ...................................................................... 15
14.0 Trouble Shooting-High Pressure, Liquid Section........................................................16
15.0 Service ..................................................................................................................16
Table of Contents Page

Operation & Maintenance Manual | 04/2202-9242ME: AHL Series Pump 4
Typical Pump: Cross Sectional View (ASL Pump Shown)
B
D
A
K
C
J
I
H
L
M
E
N
F
GO
Description Description
AAir Inlet IAir Piston Bumper
BTop End Cap JAir Piston
CAir Muffler KHigh Pressure Seal Assembly
DAir Cylinder LLiquid Inlet Connection
EBottom End Cap MInlet Check Valve
FHigh Pressure Outlet Connection NPump Head Body
GOutlet Check Valve OHydraulic Plunger
HPilot Valve

02-9242ME: AHL Series PumpOperation & Maintenance Manual | 04/22 5
AHL Pump Dimensional View
Model A B
AHL33 32.41 (823.21) 30.42 (772.41)
AHL66 32.66 (829.61) 30.16 (766.11)
AHL118 32.66 (829.61) 30.16 (766.11)
1/8" NPT Thread Spool
Air Inlet on Middle Plate
7.00
(177.80)
Slot Spacing
11.00
(279.40)
Liquid Inlet
Female 1/2" NPT
0.50
(12.70)
Slot Size Type (4) PLCS
17.55
(445.71)
Liquid Inlet
Female 1/2" NPT
Side
View
Note:
• Each Mounting Bracket includes (2) 9/16"(14.29) holes for 1/2"Bolts.
• All dimensions are for reference only and are subject to change without notice.
• Primary Dimensions: Inches
• Secondary Dimensions: (Millimeters)
A
1/8" NPT Thread
Spool Air Inlet
Opposite Main Air
Supply
1/4" NPT Thread
Isolation Drain Port
See Note
8.00
(203.20)
8.47
(215.10)
16.94
(430.17)
1" NPT Thread Air
Driven Inlet
18.44
(468.27)
See Note
1/4" NPT Thread
Isolation Drain Port
.
5.50
(139.70)
.
13.38
(339.70)
Front
View
B

Operation & Maintenance Manual | 04/2202-9242ME: AHL Series Pump 6
Section 3.0
Product Specifications
Section 1.0
Introduction
The Parker Autoclave Engineers pump discussed in this
manual is operated using compressed air up to 110 psi
(7.6 bar) max, however maximum inlet air pressure is
limited by the maximum liquid output pressure. Autoclave
Engineers AHL Series pumps are used for pumping oil,
water, and oil/water mixtures.
Special seals are also available for chemical service.
Please contact Parker Autoclave Engineers to discuss
availability of special seals. The pump operates using a
pressure ratio of the air piston surface area to the liquid
plunger surface area.
(Output liquid pressure = actual pump pressure ratio x
input air pressure). Refer to the product literature for each
pump model’s actual air pressure ratio.
Section 2.0
Meaning of Safety Words
A safety related message is identified by a safety alert
symbol and a signal word to indicate the level of risk
involved with a particular hazard. The definitions of the
three signal words are as follows:
Indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
!
WARNING
Indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
!
CAUTION
Special notes intended to bring attention to procedures
that must be followed to ensure proper installation and
performance will be placed in a box labeled NOTICE.
Section 4.0
Unpacking
The pump has been assembled and pressure tested at
Parker Autoclave Engineers and is ready to be put into
service. The shipping carton should be opened and the
contents carefully examined upon receipt from the carrier.
Make sure there is no obvious damage to the contents.
DO NOT use the equipment if any damage is evident. If
damage has occurred, file a claim with the shipper before
contacting Parker Autoclave Engineers Service
Department.
Examine all material within the container and check
against the packing list to be sure all items are accounted
for and are not damaged. Verify that the equipment model
number supplied agrees with what was ordered.
See assembly drawing for product specifications:
- Pump Geometry
- Pump Materials of Construction
- Maximum Allowable Working Pressure
- Maximum Working Temperature
- Pressure Ratio
- Displacement
- Repair Kit Part Numbers
- Torque Information
- Weights
Section 4.0
Unpacking
The pump has been assembled and pressure tested at
Parker Autoclave Engineers and is ready to be put into
service. The shipping carton should be opened and the
contents carefully examined upon receipt from the carrier.
Make sure there is no obvious damage to the contents.
DO NOT use the equipment if any damage is evident. If
damage has occurred, file a claim with the shipper before
contacting Parker Autoclave Engineers Service
Department.
Examine all material within the container and check
against the packing list to be sure all items are accounted
for and are not damaged. Verify that the equipment model
number supplied agrees with what was ordered.
Section 4.0
Unpacking
At minimum, the tools required for installation of the pump
include a torque wrench, an open end wrench adapter
(crows foot adapter) and an open end adjustable wrench.
Refer to the Tools, Maintenance and Installation Manual
provided with the Data Book for information on torque
wrenches and torque values for Parker Autoclave
Engineers tubing and fittings.
Section 5.0
Tools
Operation & Maintenance Information

02-9242ME: AHL Series PumpOperation & Maintenance Manual | 04/22 7
Section 6.0
Installation
Please read this manual in its entirety before
attempting to operate an Parker Autoclave
Engineers high pressure liquid pump
!
WARNING
AHL Pumps have a maximum sound level
of 90 dBA. Wear hearing protection while working
with or near the pump.
!
CAUTION
Installation to be performed only by properly
trained individuals.
!
WARNING
Proper protective safety gear must be worn while
installing and operating the pump.
!
WARNING
Always bolt the pump to a substantially
solid surface using the slotted holes provided.
!
WARNING
Section 6.1
Compressed Air Supply
Unless otherwise noted, all air line accessories for
the pump air drive should have, at minimum, a 1/2"
FNPT connection. The tubing/piping used to
connect the components should have the maximum
ID the pressure rating will allow. Reducing the size
before the air inlet will reduce air pressure flow and
reduce flow rate of the pump.
NOTICE
The main air drive connection port on the pump is a
female 1"FNPT and is located in the spool base housing.
An additional female 1/8"FNPT air pilot valve connection
port is located in the middle plate at the opposite side of
the 1"NPT air inlet.
This pilot connection must be plumbed to an unregulated
and filtered air source. The purpose of this connection
is to aid in low pressure differential start-up and restart
of the pump while providing a more accurate pressure
control. The pump will not function if this unregulated air
supply is not connected to the pilot valve supply port.
The use of an air line lubricator is not required
and is not recommended. The oil in the air
lubricator will cause the factory installed grease to
be purged from the pump. Once an air lubricator is
used the pump can never again be operated without
an air lubricator.
NOTICE
An air line filter with a minimum 5 microns filtration rating
must be used on the supply line. If the air supply is not
dry, a mist separator must be used to remove moisture in
the air line.
The pump is designed to function from 20 psi to 110 psi
(1.4 to 7.6 bar) air input pressure, however maximum
inlet air pressure is limited by the maximum liquid output
pressure.

Operation & Maintenance Manual | 04/2202-9242ME: AHL Series Pump 8
Section 4.0
Unpacking
All AHL series pumps have high pressure liquid outlet
ports located on the side of the pump head’s. The suc-
tion inlet ports on all AHL series pumps are positioned
opposite of the inlet checks.
Inlet: A liquid filter with at least a 100 mesh size must be
installed before the suction port inlet to prevent
damage to the check valves and high pressure seals due
to debris.
Section 6.2
Liquid Section
For best performance, a liquid supply reservoir
should be located higher than the inlet gland on the
pump to create a small pressure head. Be sure to
make an air tight seal between the reservoir and the
pump inlet connection. The connections between
the reservoir and pump inlet should not be reduced
from the FNPT connection size.
NOTICE
Refer to product literature for inlet connection details for
each pump. The tubing or piping should be made from a
corrosion resistant material and sized with a maximum ID
to fit the inlet pipe connections.
Restricting flow at the liquid inlet will cause
problems with check valve performance and reduce
output flow.
NOTICE
Outlet: The outlet tubing ID must, at minimum, match
the same size of the pump check valve gland port. Refer
to product literature for outlet connections details for
each pump. Reducing outlet tubing or connection will
reduce output liquid flow capacity.
The high pressure tubing must be rated to at
least the maximum pump output pressure.
!
WARNING
Verify liquid pressure system is protected with
an over pressure relief device.
!
WARNING
Section 4.0
Unpacking
Section 7.0
Pump Start-Up
Air Line Schematic
As shown above, a filtered main air supply line is required.
The air line then must be split through a tee. One line
will attach to the 1/8"FNPT pilot valve connection in the
middle plate of the pump.
The air pressure on this connection must be higher than
the regulated main air supply on the air drive section.
The second line out of the tee will go to a pressure
regulator which can be set to achieve the desired output
liquid pressure according to the pressure ratio of the
pump.
In order for the pump to flow properly, both outlets
must be plumbed together into a tee to one
single outlet.
NOTICE
AIR
REGULATOR
SHUTOFF
VALV E
AIR
FILTER
AHL SERIES
PUMP
FNPT
LIQUID INLET
FNPT
LIQUID OUTLET
AIR
INLET
FNPT
LIQUID OUTLET
FNPT
LIQUID INLET
1/8” FNPT
UNREGULATED AIR
PILOT INLET
1” FNPT
REGULATED AIR
DRIVE INLET

02-9242ME: AHL Series PumpOperation & Maintenance Manual | 04/22 9
Use an air pressure regulator to assure maximum air
drive pressure listed on the pump label is not
exceeded. An air pressure regulator must also be
used to assure the pump will not exceed maximum
liquid output pressure listed on the pump label.
!
WARNING
The pump and high pressure liquid system must be
vented prior to installation and start-up.
!
WARNING
The pumps unique design allows for self priming.
To prime, regulate the air pressure to between 5-15 psi
or use an air flow regulator to reduce to a slow stroke
frequency. With the high pressure side connected to a
vented system, allow the pump to cycle till a consistent
flow of liquid is achieved. Let the pump flow freely to
purge any air in the liquid system. Loosening the outlet
gland or pipe can also assist in priming the pump.
Be sure to securely tighten high pressure tube, pipe
or gland with the appropriate torque after the
priming has been achieved.
Reference Tools, Installation, Operation and
Maintenance Manual for tube gland torque value.
!
WARNING
Increase the air pressure using the air pressure regulator
until you achieve your desired output liquid pressure.
At this point the pump will stall. You can calculate the
output pressure by multiplying the input air supply by the
actual pressure ratio of the pump. The pump will
automatically restart if there is a drop in downstream
high pressure.
DO NOT exceed the maximum liquid pressure and
temperature rating specified on the assembly
drawing and label for your pump.
It is recommended to use a liquid relief valve or
rupture disk to prevent over pressurization of your
high pressure system.
DO NOT exceed the maximum air drive pressure
listed on your pump label.
!
WARNING
Section 4.0
Unpacking
Section 8.0
Process Media
Parker Autoclave Engineers pumps discussed in this
manual are used for pumping oil, water and oil/water
mixtures. Special seals are also available for chemical
service. Please contact Parker Autoclave Engineers to
discuss availability of special seals.
While testing has shown o-rings to provide
satisfactory service life, actual life will vary widely
with diering service conditions, properties of
reactants, pressure and temperature cycling and
age of the o-ring.
FREQUENT INSPECTIONS SHOULD BE MADE
to detect any deterioration and o-rings replaced
as required.
!
WARNING
The user is required to verify material compatibility
with fluid based on corrosion resistance. A material
list is provided on the assembly drawing to
aid you in the evaluation.
!
WARNING
Pumps are not designed to run for long periods of
time without liquid process media. Short, dry
pumping cycles should not be a cause for concern.
However, pumps are built using lubricant in the seal areas
and pumping without fluid will wear away lubricant
and compromise the seal.
The operating temperatures of the pump are between
0°F to 140°F (18°F to 60°F).

Operation & Maintenance Manual | 04/2202-9242ME: AHL Series Pump 10
Section 4.0
Unpacking
Section 9.0
Pump Functionality
When the pump is installed, maximum system air is
connected to 1/8"FNPT pilot air inlet and is sealed off by
pilot valve assembly in the top end cap and does not
enter the spool housing. Regulated air is connected to
the spool housing at the 1"FNPT pump inlet.
1. Regulated inlet air pressure enters the spool
housing and is diverted to the air cylinders and
their pistons, which causes one plunger
to build pressure in one of the hydraulic pump
heads while the second plunger performs a
suction stroke that will pull liquid into the second
hydraulic pump head.
2. When a hydraulic pump head is in the suction
stroke, the plunger is moving away from the head
causing the inlet check valve to open, which
allows liquid to be drawn into the head while the
outlet check valve is forced closed.
3. When the hydraulic pump head is building
pressure, the plunger is moving toward the head
compressing the fluid and forcing the inlet check
valve to close and the outlet check valve to open.
4. The air pistons continue to move until a piston
hits the pilot valve assembly in the end cap.
5. The pilot control valve shifts allowing max system
air pressure to shift the spool valve so that it now
directs air drive pressure through to the opposite
side of the pistons in the air cylinders and pushes
the air piston and liquid plunger in the opposite
direction.
6. While the air drive pressure is acting on the
pressure side of the piston, the opposing area of
the piston’s are vented through the exhaust
mufflers.
7. This action causes the reverse action of step
#1 (the suction head will change to a
compression stroke, while the pressurize head
will change to a suction stroke).
8. The air pistons continue to move until a piston
hits the pilot valve assembly in the second end
cap which will again cause the spool to
shift and divert air to move the pump in the
opposite direction.
Section 4.0
Unpacking
Section 10.0
Suggested Maintenance
All pumps must be inspected periodically in order to
assure proper and safe operating condition.
Failure to inspect pump can result in serious and
catastrophic harm to personnel and the
surrounding facility.
!
WARNING
A. Before each pump use, a quick inspection
should be performed to insure there are no
loose bolts, nuts, set screws or check valve
glands. Tighten any lose bolts and fittings
according to the torque values listed on the
pump assembly drawing. A visual inspection
should also be made before each use and at
startup to make sure there is no evidence of fluid
leaks from isolation chamber drain ports, check
valves connections and muffler. If liquid mists out
of the muffler for more than 5 strokes, it is time
to replace your hydraulic high pressure seals.
Refer to the troubleshooting guide for solutions
to these fluid leaks.
B. The maintenance schedule of the pump
depends on the frequency of use, cleanliness
of media, type of media, cycle rates, output
pressures, cleanliness of air or any other
conditions that may be damaging to seal
integrity. Once a clear pattern develops of how
long a pump is in service before pump
performance declines, it is recommended to
perform maintenance in advance of this time
frame. At minimum, perform maintenance on
the pump once a year as described below.
9. This alternating action of steps #1 to step #8
continues until the maximum outlet hydraulic
pressure is reached based on the pressure ratio
of the pump.

02-9242ME: AHL Series PumpOperation & Maintenance Manual | 04/22 11
Before attempting to disassemble the pump or
loosen fittings in a pressure system, be sure that
liquid pressure has been totally vented.
!
WARNING
Before attempting to perform maintenance on the
pump, assure that air supply pressure is shut o
and vented from the pump.
!
WARNING
Maintenance would include:
• Re-lubrication or replacement of spool
valve o-ring
• Re-lubrication or replacement of air
drive seals
• Re-lubrication or replacement of pilot valve
o-rings and gaskets
• Replace check valve components
• Replace high pressure hydraulic seals
C. Maintenance instructions are supplied with
appropriate rebuild kits. Kit part numbers are
listed on the assembly drawing.
Section 4.0
Unpacking
Section 11.0
AHL Series Repair Kit Options
Pump Model
Number
O-Ring
Material
Spool
Valve
Kit
Pilot
Valve
Kit
Air Drive
Kit
Hydraulic Seal
Upper
Inlet
Check
Valve Kit
Outlet
Check
Valve w/
Seal
Full
Rebuild Kit
AHL33-2DSCTB Buna-N RS-AHL RP-AHL RA-AHL-2DC RH-AHL33-TB RC-11-B RC-11-B RF-AHL33-2DCTB
AHL33-2DSCTC FFKM RS-AHL RP-AHL RA-AHL-2DC RH-AHL33-TC RC-11-C RC-11-C RF-AHL33-2DCTC
AHL33-2DSCTV FKM RS-AHL RP-AHL RA-AHL-2DC RH-AHL33-TV RC-11-V RC-11-V RF-AHL33-2DCTV
AHL66-2DSCTB Buna-N RS-AHL RP-AHL RA-AHL-2DC RH-AHL66-TB RC-11-B RC-11-B RF-AHL66-2DCTB
AHL66-2DSCTC FFKM RS-AHL RP-AHL RA-AHL-2DC RH-AHL66-TC RC-11-C RC-11-C RF-AHL66-2DCTC
AHL66-2DSCTV FKM RS-AHL RP-AHL RA-AHL-2DC RH-AHL66-TV RC-11-V RC-11-V RF-AHL66-2DCTV
AHL118-2DSCTB Buna-N RS-AHL RP-AHL RA-AHL-2DC RH-AHL118-TB RC-11-B RC-11-B RF-AHL118-2DCTB
AHL118-2DSCTC FFKM RS-AHL RP-AHL RA-AHL-2DC RH-AHL118-TC RC-11-C RC-11-C RF-AHL118-2DCTC
AHL118-2DSCTV FKM RS-AHL RP-AHL RA-AHL-2DC RH-AHL118-TV RC-11-V RC-11-V RF-AHL118-2DCTV

Operation & Maintenance Manual | 04/2202-9242ME: AHL Series Pump 12
Section 4.0
Unpacking
Section 12.0
AHL33-20-C Series Pump Drawing

02-9242ME: AHL Series PumpOperation & Maintenance Manual | 04/22 13
Section 4.0
Unpacking
Section 12.0
AHL66-20SC Series Pump Drawing

Operation & Maintenance Manual | 04/2202-9242ME: AHL Series Pump 14
Section 4.0
Unpacking
Section 12.0
AHL118-20SC Series Pump Drawing

02-9242ME: AHL Series PumpOperation & Maintenance Manual | 04/22 15
Troubleshooting
Section 4.0
Unpacking
Section 13.0
Troubleshooting - Pneumatic Section
Problem: Pump will not operate with low air pressure.
Cause: Excessive friction of o-rings on the spool
valve has increased the pressure required
to move spool.
Solution: Replace and lubricate the o-rings on spool
Problem: Pump can only be actuated at high air
pressure.
Cause: a) Air is leaking through the piston guide
bushing in the top end cap.
b) Air is leaking through the o-rings between
the top end cap and air cylinder.
Solution: a) Replace and lubricate o-rings on upper
plunger and between bushing and top cap.
b) Replace and lubricate o-ring on lip of top
end cap.
Problem: Pump will not run and air escaped through
the exhaust muer.
Cause: a) Spool valve o-rings are leaking.
b) Spool sleeve o-rings are leaking.
c) Outside o-ring(s) on air piston(s) is leaking.
d) Seal between air piston and liquid plunger
is leaking.
Solution: a) Replace and lubricate spool valve o-rings.
b) Replace and lubricate sleeve o-rings.
c) Replace and lubricate air piston o-ring(s).
d) Replace o-ring on bottom plunger (two
piece plunger designs), or add Loctite
2760 thread locker with sealant on plunger
threads (one piece plunger designs).
Problem: Pump will not run and air escapes through
the small hole in the spool valve housing.
Cause: Spool valve sleeve o-rings are leaking.
Solution: Replace and lubricate spool valve o-rings.
Problem: Pump will not run and air escapes through
the pilot valve vent in the bottom end cap.
Cause: Pilot valve gasket or o-ring is not sealing in
the bottom cap.
Solution: Replace and lubricate pilot valve gasket
and o-ring. If necessary, also replace the
tappet rod.
Problem: Pump operates at a high frequency and
short strokes.
Cause: The top or bottom pilot valves are defective.
Solution: Replace and lubricate both pilot valve
gaskets and o-rings. If necessary also
replace the tappet rods.
Problem: Pump will not run and air flows out of the
separation plate vent (double stage
pump only).
Cause: The rod seal in the separation plate is
leaking.
Solution: Replace and lubricate rod seal assembly.
Problem: Pump functions slowly or doesn’t operate
at all.
Cause: a) Condensation from air supply is
freezing the spool valve.
b) Air muffler is clogged.
Solution: a) Stop pump for a short period and
replace or add a mist separator in the air line.
b) Clean or replace air muffler.

Operation & Maintenance Manual | 04/2202-9242ME: AHL Series Pump 16
Section 4.0
Unpacking
Section 14.0
Troubleshooting - High Pressure, Liquid Section
Problem: Pump does not produce liquid flow, operates
irregularly or does not maintain pressure.
Cause: a) Air in the hydraulic system.
b) Suction line excessively long.
c) Suction tubing sized too small.
d) Failure of one of the check valves.
e) Liquid inlet filter is blocked.
f) High pressure seal excessively worn.
Solution: a) Check inlet suction line and connections
for leaks and allow pump to flow freely
downstream so as to remove any air.
b) Shorten liquid supply line.
c) Increase tubing ID size between reservoir
and pump inlet.
d) Clean or replace both inlet and outlet
check valve assemblies.
e) Clean or replace liquid inlet filter.
f) Replace high pressure seal assembly.
Problem: When air is applied to pump the spool will not
actuate.
Cause: Unregulated air pilot feed line pressure was
shut off at the same time as regulated main
air drive pressure. This caused the Pilot
Control Valve to stop in an incorrect position
at shutdown.
Solution: Assure unregulated pilot air, regulated air
drive and shutoff valve are arranged as
shown in the “Air Line Schematic” in
Section 7.0.
Turn off regulated air drive pressure.
Pressure should now only be supplied to the
unregulated pilot connection.
Press the manual push button switch on
either end of Pilot Control Valve (see image
below). This will shift the Pilot Control Valve
and then the spool to the position required for
restart. Now supply pump with main regulated
air pressure.
Pilot Control Valve
Use only originally specified parts when installing or
maintaining high-pressure equipment and follow all
Parker Autoclave Engineers maintenance and
assembly procedures. Do not use any parts from
other equipment to make repairs or modifications.
Contact Parker Autoclave Engineers with any
questions or if sucient information to complete the
installation, maintenance and operation of the
equipment has not been included.
!
WARNING
Section 4.0
Unpacking
Section 15.0
Service
Parker Autoclave Engineers now require all pump repair
be sent to an authorized repair facility. Contact Parker
Autoclave Engineers for recommendations. Pumps
returned for service should be accompanied with the
model number, serial number, manufacture date and
problems you are experiencing.

Maintenance Notes

Operation & Maintenance Manual | 04/2202-9242ME: AHL Series Pump 18
Maintenance Notes

Parker’s Motion & Control Technologies
At Parker, we’re guided by a relentless drive to help our customers become more productive and achieve higher levels of profitability by engineer-
ing the best systems for their requirements. It means looking at customer applications from many angles to find new ways to create value. What-
ever the motion and control technology need, Parker has the experience, breadth of product and global reach to consistently deliver. No company
knows more about motion and control technology than Parker. For further information call 1-800-C-Parker.
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Systems
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Components
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Packaging Machinery
Plastics Machinery &
Converting
Semiconductor & Electronics
Factory Automation
Machine Tools
Paper Machinery
Primary Metals
Textile
Wire & Cable
AC/DC Drives & Systems
Electric Actuators, Gantry
Robots & Slides
Electrohydrostatic Actuation
Systems
Electromechanical Actuation
Systems
Human Machine Interface
Linear Motors
Stepper Motors, Servo Mo-
tors
Drives & Controls
Structural Extrusions
FILTRATION
Food & Beverage
Life Sciences
Mobile Equipment
Power Generation
Transportation
Industrial Machinery
Marine
Oil & Gas
Process
Analytical Gas Generators
Compressed Air & Gas Filters
Condition Monitoring
Engine Air, Fuel & Oil Filtration
& Systems
Hydraulic, Lubrication & Cool-
ant Filters
Process, Chemical, Water
Microfiltration Filters
Nitrogen, Hydrogen & Zero Air
Generators
FLUID and
GAS HANDLING
Aerospace
Agriculture
Bulk Chemical Handling
Construction Machinery
Food & Beverage
Fuel & Gas Delivery
Industrial Machinery
Mobile
Oil & Gas
Transportation
Welding
Brass Fittings & Valves
Diagnostic Equipment
Fluid Conveyance Systems
Industrial Hose
PTFE & PFA Hose, Tubing &
Plastic Fittings
Rubber & Thermoplastic Hose
& Couplings
Tube Fittings & Adapters
Quick Disconnects
HYDRAULICS
Aerospace
Aerial lift
Agriculture
Construction Machinery
Forestry
Industrial Machinery
Mining
Oil & Gas
Power Generation & Energy
Truck Hydraulics
Diagnostic Equipment
Hydraulic Cylinders & Ac-
cumulators
Hydraulic Motors & Pumps
Hydraulic Systems
Hydraulic Valves & Controls
Power Take-Offs
Rubber & Thermoplastic Hose
& Couplings
Tube Fittings & Adapters
Quick Disconnects
PNEUMATICS
Aerospace
Conveyor & Material Handling
Factory Automation
Life Science & Medical
Machine Tools
Packaging Machinery
Transportation & Automotive
Air Preparation
Brass Fittings & Valves
Manifolds
Pneumatic Accessories
Pneumatic Actuators & Grip-
pers
Pneumatic Valves & Controls
Quick Disconnects
Rotary Actuators
Rubber & Thermoplastic Hose
& Couplings
Structural Extrusions
Thermoplastic Tubing &
Fittings
Vacuum Generators, Cups &
Sensors
PROCESS
CONTROL
Chemical & Refining
Food, Beverage & Dairy
Medical & Dental
Microelectronics
Oil & Gas
Power Generation
Analytical Sample Condition-
ing
Products & Systems
Fluoropolymer Chemical
Delivery Fittings, Valves &
Pumps
High Purity Gas Delivery Fit-
tings, &
Valves & Regulators
Instrumentation Fittings,
Valves
Regulators
Medium Pressure Fittings &
Valves
Process Control Manifolds
SEALING and
SHIELDING
Aerospace
Chemical Processing
Consumer
Energy, Oil & Gas
Fluid Power
General Industrial
Information Technology
Life Sciences
Military
Semiconductor
Transportation
Dynamic Seals
Elastomeric O-Rings
Emi Shielding
Extruded & Precision-Cut,
Fabricated Elastomeric Seals
Homogeneous & Inserted
Elastomeric Shapes
High Temperature Metal Seals
Metal & Plastic Retained
Composite Seals
Thermal Management

02-9242ME April 2022
© 2022 Parker Hannifin Corporation | Instrumentation Products Division
1005 A Cleaner Way
Huntsville, AL 35805 USA
Tel: [phone]
Fax: [phone]
www.Parker.com/IPD
Operation and Maintenance Manual
AHL Series: Liquid Pumps
Parker Worldwide
North America
USA – Corporate, Cleveland, OH
Tel: [phone]
USA – IPD, Huntsville, AL
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[e-mail]
USA – IPD, (Autoclave), Erie, PA
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CA – Canada, Grimsby, Ontario
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South America
AR – Argentina, Buenos Aires
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BR – Brazil, Diadema, SP
Diadema, SP
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CL – Chile, Santiago
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MX – Mexico, Toluca
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Asia Pacific
AU – Australia, Dandenong
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CN – China, Shanghai
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HK – Hong Kong
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IN – India, Mumbai
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ID – Indonesia, Tangerang
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[e-mail]
JP – Japan, Tokyo
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KR – South Korea, Seoul
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MY – Malaysia, Selangor
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[e-mail]
SG – Singapore,
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TH – Thailand, Bangkok
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[e-mail]
TW – Taiwan, Taipei
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[e-mail]
VN – Vietnam, Hochi Minh City
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[e-mail]
Europe, Middle East, Africa
AE – UAE, Dubai
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[e-mail]
AT – Austria, Wiener Neustadt
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[e-mail]
AT – Eastern Europe, Wiener Neustadt
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AZ – Azerbaijan, Baku
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BE/LU – Belgium, Nivelles
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[e-mail]
BG – Bulgaria, Sofia
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[e-mail]
BY – Belarus, Minsk
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[e-mail]
CH – Switzerland, Etoy
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CZ – Czech Republic, Klecany
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DE – Germany, Kaarst
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[e-mail]
DK – Denmark, Ballerup
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ES – Spain, Madrid
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FI – Finland, Vantaa
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FR – France, Contamine s/Arve
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GR – Greece, Athens
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HU – Hungary, Budapest
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IE – Ireland, Dublin
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IT – Italy, Corsico (Ml)
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KZ – Kazakhstan, Almaty
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NL – The Netherlands, Oldenzaal
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NO – Norway, Stavanger
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PL – Poland, Warsaw
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PT – Portugal, Leca da Palmeira
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RO – Romania, Bucharest
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RU – Russia, Moscow
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SE – Sweden, Spånga
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SK – Slovakia, Banská Bystrica
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SL – Slovenia, Novo Mesto
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[e-mail]
TR – Turkey, Istanbul
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UA – Ukraine, Kiev
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UK – United Kingdom, Warwick
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[e-mail]
ZA – South Africa, Kempton Park
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