Puregas P20KW, P30KW User Manual
P20KW / P30KW Air Dryer
User’s Guide
P011238 – Rev. L
PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
1. Welcome & Congratulations
Congratulations on your purchase of a new PUREGAS P20KW / P30KW Air Dryer! We
here at PUREGAS are very proud of our products and we are committed to providing you
with the best value and service possible.
We are sure that you will be satisfied with your new air dryer and would like to thank you
for choosing PUREGAS for your air dryer requirements. We also hope that you will
continue to choose us for your future air pressure and related product purchases.
For information about this and other PUREGAS products, please visit us on the web at:
www.puregas.com
2. Introduction
PLEASE READ THIS USER’S GUIDE THOROUGHLY AND SAVE FOR
FUTURE REFERENCE.
This User’s Guide is provided for the benefit of our customers and contains information
and direction specific to the PUREGAS P20KW / P30KW Air Dryer. It will cover topics
including: safety, specifications, installation, registration, operation, testing, maintenance,
replacement parts, service, and troubleshooting issues. Observation and compliance with
this User’s Guide will ensure the maximum life and efficiency of your air dryer.
This User’s Guide should be read thoroughly prior to installing, operating, or servicing
the air dryer in order to become familiar with the recommended procedures. This will
minimize the possibility of personal injury or damage to the unit due to improper
operation or handling.
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
3. Table of Contents
8.13 Setting the Static Pressure ....................... 46
1. Welcome & Congratulations .......................... 3
8.14 Setting the Outlet Pressure ...................... 47
2. Introduction ..................................................... 3
3. Table of Contents ............................................. 4
4. Safety & Warning Information ...................... 6
5. Overview & Specifications .............................. 9
5.1 Product Description .................................... 9
5.2 Key Features ............................................... 9
5.3 Dryer Function Overview ......................... 10
5.4 Technical Specifications ........................... 12
6. Installing Your Dryer .................................... 13
6.1 Safety & Warning Information ................. 13
6.2 Before You Begin ..................................... 15
6.3 Included Contents ..................................... 16
6.4 Required Tools and Materials ................... 16
6.5 Installation Steps ....................................... 17
6.6 Installation Checklist ................................ 27
8.15 Setting the RRU Temperature ................. 48
9. Testing Your Dryer ....................................... 50
9.1 Safety & Warning Information ................. 50
9.2 Measuring Compressor Amp Draw .......... 52
9.3 Measuring Voltage to Compressor ........... 53
9.4 Measuring Incoming Voltage ................... 54
9.5 Testing High Outlet Pressure Alarm ......... 55
9.6 Testing Low Outlet Pressure Alarm.......... 56
9.7 Testing Low System Pressure Alarm ........ 57
9.8 Testing 4-Way Valve Cycling .................. 59
9.9 Measuring 4-Way Valve Solenoid
Voltage............................................................ 62
9.10 Measuring Tower Heater Voltage ........... 65
9.11 Testing Precooler Fan ............................. 68
9.12 Testing Low Water Sensor Function &
System Shutdown ........................................... 69
9.13 Testing Dump Sensor and Primary
Water Dump Functions ................................... 70
7. Registering Your Dryer................................. 28
8. Operating Your Dryer .................................. 29
8.1 Safety & Warning Information ................. 29
8.2 Connecting Air Lines to the Dryer ........... 30
8.3 Powering the Dryer ON & OFF ................ 30
8.4 Using the Front Panel Display .................. 31
8.5 Identifying Dryer Alarms ......................... 34
8.6 Adjusting & Resetting Dryer Set Points ... 38
8.7 Opening Panels ......................................... 42
8.8 Connecting to Common Alarm Terminals 43
8.9 Rewiring the Common Alarm Socket ....... 44
8.10 Connecting to Discrete Alarm Terminals 44
8.11 Depressurizing the Dryer ........................ 45
8.12 Setting the System Pressure .................... 45
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9.14 Testing High Water and Secondary
Water Dump Functions ................................... 72
9.15 Testing Humidity Alarm and System
Shutdown ........................................................ 76
9.16 Testing Power Contactor ........................ 77
9.17 Testing Fittings & Hoses for Leaks ........ 79
10. Maintaining Your Dryer ............................. 80
10.1 Safety & Warning Information ............... 80
10.2 Six Month Maintenance .......................... 82
11. Replacement Parts & Accessories .............. 83
11.1 Top Front Section Parts .......................... 83
11.2 Bottom Front Section Parts ..................... 84
11.3 Top Front Panel Parts ............................. 85
11.4 Top Back Section Parts ........................... 86
PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
11.5 Bottom Back Section Parts ..................... 87
11.6 Frame Section Parts ................................ 88
11.7 Accessories for Your Dryer .................... 89
11.8 Ordering Parts from PUREGAS ............. 90
12. Service & Repair.......................................... 91
12.1 Services Offered ..................................... 91
12.2 Initiating a Service Transaction .............. 91
13. Troubleshooting Your Dryer ...................... 92
13.1 Before You Call PUREGAS ................... 92
13.2 Safety & Warning Information ............... 92
13.3 Air Dryer Won’t Power ON.................... 94
13.4 Display Screen Not Functioning ............. 94
13.5 Low System Pressure Alarm .................. 94
13.6 Can’t Create a Low System Pressure
Alarm .............................................................. 95
13.7 High Outlet Pressure Alarm .................... 95
13.8 Can’t Create a High Pressure Alarm ....... 96
13.9 Low Outlet Pressure Alarm .................... 96
13.10 Can’t Create a Low Pressure Alarm ..... 97
13.11 High Flow Rate Alarm.......................... 97
13.12 High Humidity ...................................... 98
13.15 High RRU Temperature Alarm ........... 100
13.16 Low Water Alarm ............................... 100
13.17 Can’t Create a Low Water Alarm ....... 101
13.18 High Water Alarm .............................. 101
13.19 Can’t Create a High Water Alarm ...... 102
13.20 High Water Temperature Alarm ......... 102
13.21 Compressor Doesn’t Operate .............. 103
13.22 Unit Trips Breaker .............................. 103
13.23 Contacting PUREGAS Technical
Support.......................................................... 104
14. Appendix .................................................... 105
14.1 Wiring Diagram .................................... 105
14.2 Set Point Limits and Defaults ............... 106
15. Limited Warranty Agreement .................. 107
Registration Reminder .................................. 107
16. Contacting PUREGAS .............................. 108
16.1 General .................................................. 108
16.2 Sales ...................................................... 108
16.3 Service .................................................. 108
16.4 Technical Support ................................. 108
13.13 Can’t Create a High Humidity Alarm /
Shutdown ........................................................ 99
13.14 High Outlet Temperature Alarm ........... 99
Page 5 of 109 P011238 – Rev L
17. Notes............................................................ 109
PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
4. Safety & Warning Information
This section contains general information about safety and warning points to consider and
adhere to during installation, operation, and maintenance of your air dryer. PLEASE
READ THIS SECTION BEFORE PERFORMING ANY OPERATION OR
PROCEDURE ON YOUR AIR DRYER.
Additional warnings specific to an operation or procedure will also be presented
throughout the following sections. These will include the symbol as well as a label of
“WARNING!”, “CAUTION!”, or “IMPORTANT!” Please be sure to pay close
attention for these warnings and read them as you encounter them.
WARNING!
For your safety, all the information in this User’s Guide must be
followed to minimize the risk of electrical shock, and prevent
property damage or personal injury.
WARNING!
Extreme care should be exercised to avoid contact with live
electrical circuits. Many procedures performed during installation,
operation, testing, and maintenance of this air dryer require the
equipment to be running, creating a situation for potential electrical
shock. It is highly recommended that you remove all jewelry before
performing any procedures.
WARNING!
Internal surfaces may be hot. Use care when coming into contact
with internal components as there is a potential for some of these
components to become hot when in operation or standby.
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
WARNING!
High Noise. PUREGAS air dryers are meant to be installed in an
unattended area.
CAUTION!
Proper Installation & Maintenance as outlined in this User’s Guide is
extremely important to ensure the reliability and longevity of the
equipment as well as prevent damage or personal injury.
CAUTION!
Depressurizing the air dryer may be necessary before performing
certain procedures. NEVER remove pressure sensing tubes from the
Control Board without depressurizing the air dryer first, or damage to
the Control Board will occur.
CAUTION!
Incoming power to Air Dryer must be:
• 30 amp service recommended
• 20 amp slow blow fuse
• 208 - 230 VAC, 1 Phase for P20KW model
• 208 - 230 VAC, 3 Phase for P30KW model
• If hard-wiring directly, minimum of 10 AWG wire must be
used
CAUTION!
This Air Dryer does not contain an internal Surge Protection Device
(SPD). If an SPD is required it must be supplied by the user.
Page 7 of 109 P011238 – Rev L
PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
AND MAY VOID THE WARRANTY.
your air dryer.
CAUTION!
DO NOT USE DISTILLED OR DE-IONIZED WATER IN THIS
UNIT. It will cause damage to the compressor and other major
components over time. This unit is designed for clean tap water only.
CAUTION!
Observe precautions for handling Electrostatic Sensitive Devices.
IMPORTANT!
Performing routine maintenance as outlined in the Maintaining Your
Dryer section will ensure optimal performance over the lifecycle of
IMPORTANT!
Performing procedures not described in this User’s Guide or installing
components not supplied by PUREGAS is NOT RECOMMENDED
IMPORTANT!
If installing more than one air dryer in the same location, use individual
drain tubing. If plumbed together, damage to the air dryers may occur.
IMPORTANT!
Installation of PUREGAS air dryers are intended for network
telecommunication facilities (non-customer premises) only.
Page 8 of 109 P011238 – Rev L
PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
5. Overview & Specifications
5.1 Product Description
The P20KW / P30KW Air Dryer from PUREGAS is designed to intake wet ambient
air and remove the moisture for delivery to applications requiring a constant, ondemand source of dry, pressurized air. This process is fully automatic and will
remain consistent with minimal required periodic maintenance. This dryer is
designed specifically for indoor use.
The P20KW / P30KW Air Dryer employs a fully digital operating platform offering
the most accurate readings of dryer variables, removable access panels allowing easy
access for adjustment and maintenance, heat activated desiccant towers, a
refrigeration system, and a single water sealed air compressor.
5.2 Key Features
• Real-time monitoring of over 15 points
• Remote access and alarm reset capabilities
• LCD display of all operating parameters
• Solid state microprocessor-based circuitry
• Accurate humidity sensing within ±0.1% RH
• Lowest Energy Cost
• Single water sealed compressor
• Dual pressure outlets
• Unique heated drying system
• Maintenance-free sealed cooling system
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
5.3 Dryer Function Overview
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
# Component Description
1 Inlet Air Filter Draws in ambient air.
2 Accumulator Prevents the return of air or water from the
compressor.
3 Compressor Creates compressed air.
4 Primary Water Separator Separates water from compressed air.
5 Precooler Cools water from the compressor.
6 Water Filter Filters water.
7 Primary Dump Valve Dumps excessive water from the primary water
separator.
8 Primary Drain Outlet Outputs the water released by the primary dump
valve.
9 Refrigeration Unit Lowers the temperature of the moist compressed
air causing condensation.
10 Secondary Water
Separator
11 Secondary Dump Valve Dumps excessive water from the secondary water
12 Secondary Drain Outlet Outputs the water released by the secondary
13 System Pressure
Regulator
14 4-Way Valve Assembly Directs the cold, saturated air from the secondary
15 Desiccant Towers Dries the saturated air.
16 Static Pressure Regulator Regulates the static pressure (17 PSI).
17 Combo Block Measures the flow of compressed air, houses the
18 Outlet Pressure Regulator Regulates the outlet pressure
19 Pressure Outlet Outputs the air at the pressure set by the
20 Static Pressure Outlet Outputs the air at the pressure set by the Static
Separates condensation from compressed air.
separator.
dump valve.
Maintains operating pressure.
separator to the on-line desiccant tower.
Maintains constant pressure on the combo block
for accurate flow measuring.
adjustable pressure regulator, humitter and outlet
temperature probe.
adjustable pressure regulator.
Pressure Regulator (17 PSI).
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
5.4 Technical Specifications
P20KW P30KW
Output Capacity
Power Requirements
Electrical Characteristics
(30 Amp service
recommended)
Outlet Pressure Range
Outlet Air Humidity
Compressor Type
Drying Method
Operating Temperature
Range
20,000 SCFD 30,000 SCFD
208 - 230 VAC, 1 Phase 208 - 230 VAC, 3 Phase
Running Amps: 17.5 Running Amps: 16.5
Variable Pressure Outlet: 0 – 15 PSI (adjustable)
Static Pressure Outlet: 17 PSI
Less than 2% RH
Water sealed, 2 HP, 1 Phase Water sealed, 3 HP, 3 Phase
Refrigeration (R134A) and Heat Desiccant
40° to 85°F (5° to 30°C) optimal
Noise Level
Heat Dissipation
Alarms
Outlet Connections
Dimensions
Net / Shipping Weight
86.6 dBA
12,420 BTU/hr 11,710 BTU/hr
Standard alarms – complete readings of all critical
measurement points, individual alarm indication display
Variable Pressure Outlet: 3/4” NPT Female
Static Pressure Outlet: 3/4” NPT Female
20.5” D x 40” W x 58.5” H
(52 cm x 101.6 cm x 148.6 cm)
550 lbs (249.5 kg) / 621 lbs (282 kg)
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6. Installing Your Dryer
6.1 Safety & Warning Information
WARNING!
Internal surfaces may be hot. Use care when coming into contact
with internal components as there is a potential for some of these
components to become hot when in operation or standby.
WARNING!
Extreme care should be exercised to avoid contact with live
electrical circuits. Many procedures performed during
installation, operation, testing, and maintenance of this air dryer
require the equipment to be running, creating a situation for
potential electrical shock. It is highly recommended that you
remove all jewelry before performing any procedures.
WARNING!
High Noise. PUREGAS air dryers are meant to be installed in an
unattended area.
CAUTION!
Proper Installation & Maintenance as outlined in this User’s Guide
is extremely important to ensure the reliability and longevity of the
equipment as well as prevent damage or personal injury.
Page 13 of 109 P011238 – Rev L
PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
RECOMMENDED AND MAY VOID THE WARRANTY.
user.
dryers may occur.
be used
CAUTION!
Incoming power to Air Dryer must be:
• 30 amp service recommended
• 20 amp slow blow fuse
• 208 - 230 VAC, 1 Phase for P20KW model
• 208 - 230 VAC, 3 Phase for P30KW model
• If hard-wiring directly, minimum of 10 AWG wire must
CAUTION!
This Air Dryer does not contain an internal Surge Protection
Device (SPD). If an SPD is required it must be supplied by the
IMPORTANT!
Installation of PUREGAS air dryers are intended for network
telecommunication facilities (non-customer premises) only.
IMPORTANT!
If installing more than one air dryer in the same location, use
individual drain tubing. If plumbed together, damage to the air
IMPORTANT!
Performing procedures not described in this User’s Guide or
installing components not supplied by PUREGAS is NOT
Page 14 of 109 P011238 – Rev L
PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.2 Before You Begin
6.2.1 Carefully inspect the unit, including the shipping box as well as the air
dryer, for ANY DAMAGE CAUSED BY SHIPPING. If any shipping
damage is detected, it is important to file a claim with the shipping
company prior to continuing the installation procedures.
6.2.2 Read the entire Installing Your Dryer section to familiarize yourself with
the components and procedures before performing the air dryer installation.
6.2.3 Verify the installation location of the air dryer:
6.2.3.1 Well ventilated and free from abrasive dust or chemicals.
6.2.3.2 Unobstructed drain or bucket for water dump.
6.2.3.3 Ambient temperature is between 40° and 85° F (optimum).
NOTE: Higher temperatures will decrease component lifespan.
6.2.3.4 Meets the following power requirements:
• 208 - 230 VAC, 1 Phase for P20KW
• 208 - 230 VAC, 3 Phase for P30KW
• Minimum 30 amp service with a 20 amp slow blow fuse
• If hard-wiring directly, minimum of 10 AWG wire must be used
6.2.4 Notify the alarm center of the installation and potential for alarms during
the process (as necessary).
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.3 Included Contents
(1) P20KW / P30KW Air Dryer
(2) 10’ - 3/8” Drain Tubing
(1) Installation Guide (not shown)
Package located inside the dryer:
(1) User’s Guide Paper copy or digital file on CD (not shown)
(1) Water Sensor (1) Alarm Plug
(1) Compressor Connector Tool
6.4 Required Tools and Materials
• Large adjustable wrench
• Medium adjustable wrench
• Band cutters or snips
• 7/16” wrench
• 1/2” wrench
• 3/8” wrench
• Medium phillips head
screwdriver
• 1+ gallon of clean tap water
(DO NOT USE DISTILLED
WATER)
• Medium flat head screwdriver
• Small flat head screwdriver
• Pipe dope or pipe thread tape
• Cup of soapy water
• 1-inch paint brush
(recommended)
• Shop Towels
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.5 Installation Steps
6.5.1 Remove all shipping
materials.
NOTE: If ANY SHIPPING
DAMAGE is detected, file a
claim with the shipping
company prior to continuing
the installation procedures.
6.5.2 Place the dryer at the operating location.
6.5.3 Remove the Lower Front
and Side Panels.
6.5.4 Check for loose parts,
hoses, or wiring.
NOTE: If ANY SHIPPING
DAMAGE is detected, file a
claim with the shipping
company prior to continuing
the installation procedures.
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.5.5 Using a 1/2” wrench, loosen
the nuts on the RRU
Compressor.
6.5.6 Remove the shipping blocks
and discard.
6.5.7 Retighten the RRU Compressor nuts.
6.5.8 Using a 7/16” wrench, remove bolt and shipping block from under the
compressor plate. Discard block and bolt.
6.5.9 Remove the ship-loose
contents package.
On BACK of dryer:
6.5.10 Install 3/8” drain tubing
into the primary and
secondary fittings and route
to an unobstructed drain or
bucket.
.
CAUTION: Use individual drain tubing. If plumbed together, damage
to the air dryer may occur.
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.5.11 Verify that the dryer is
powered OFF.
On TOP of dryer:
6.5.12 Verify that the orifice plug
is still installed where shown.
6.5.13 Wire directly or plug the
power cord into a power
outlet
• 208 - 230 VAC, 1 phase
for the P20KW
• 208 - 230 VAC, 3 phase
for the P30KW
NOTE: PUREGAS recommends using a 20 amp 250 VAC plug. (not provided)
Page 19 of 109 P011238 – Rev L
PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.5.14 Prime the compressor:
CAUTION: The following steps must be performed to avoid damage to the
compressor.
6.5.14.1 Remove Inlet Air
Filter Assembly.
6.5.14.2 Push the
Accumulator’s
diaphragm down by
inserting a screwdriver
as shown.
6.5.14.3 Slowly pour water
into the Accumulator
until it is full.
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.5.15 Power the dryer ON
momentarily and then power
OFF.
NOTE: If water is NOT drawn
into the Accumulator move to the
next step.
If the water IS being drawn into the Accumulator move to step 6.5.17 ).
6.5.16 Interchange the compressor wires. (Skip these steps if water is being
drawn into the compressor):
6.5.16.1 Verify dryer Power
is OFF.
6.5.16.2 Use the Compressor
Connector Tool to
remove the Red & Black
wires from the dryer
side connector.
6.5.16.3 Switch the Red & Black wires and re-insert.
6.5.17 Power the dryer ON.
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.5.18 Continue adding water
until the water level stabilizes
below the Dump Water
Sensor.
6.5.19 Remove Screwdriver.
6.5.20 Reinstall Inlet Air Filter
assembly.
6.5.21 Let the dryer run until the
Humidity drops under 2%
(may take up to 15 minutes).
NOTE: Press RESET Button
if the System goes into
SHUTDOWN.
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.5.22 Power the dryer OFF.
6.5.23 Connect the air supply
line(s) to the dryer Outlet
Pressure and/or Static
Pressure port(s).
CAUTION: Be careful when removing outlet plug(s). System may be
pressurized.
PUREGAS recommends using Installation Kit P011890 to connect your air dryer
to the air supply line (See section 11.7 for detail).
6.5.24 Power the dryer ON.
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.5.25 Set the System Pressure:
6.5.25.1 When the SYSP
Screen (8.4.5.1 )
appears on the display,
press the HOLD Button
on the Front Panel to
freeze that screen.
6.5.25.2 Unlock the knob on
the System Pressure
Regulator by loosening
the retaining nut with a
1/2” wrench.
6.5.25.3 Adjust the System
Pressure Regulator until
the SYSP reading on the
Front Panel Display is
24 PSI.
6.5.25.4 Lock retaining nut on
the System Pressure
Regulator.
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.5.26 Set the Static Pressure:
6.5.26.1 Pull the Static Pressure
Regulator knob out.
6.5.26.2 Turn the knob until the
reading on the pressure
gauge is 17 PSI.
6.5.26.3 Push knob in to lock.
6.5.27 Set the Outlet Pressure:
6.5.27.1 When the SYSP
Screen (8.4.5.1 )
appears on the display,
press the HOLD Button
on the Front Panel to
freeze that screen.
6.5.27.2 Pull the Outlet
Pressure Regulator knob
out.
6.5.27.3 Turn knob until
Outlet Pressure (OUTP)
reading is at the desired
setting.
6.5.27.4 Push knob in to lock.
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.5.28 Check for leaks:
NOTE: This is a general procedure that can be applied to any fitting or hose
that has air pressure in it. DO NOT SOAP TEST THE HUMITTER
FITTING. DAMAGE TO THE HUMITTER MAY OCCUR.
6.5.28.1 Visually inspect for water leaks.
6.5.28.2 Listen for any ‘hissing’ sounds which may indicate a fitting or hose
air leak.
6.5.28.3 Use a 1-inch paint
brush to dab soapy water
on the air fitting or hose
connection to be tested.
If air bubbles appear at the
connection, this indicates that
air is leaking from the
connection.
If any leaks are detected, take steps to seal them off (as necessary):
• Tighten the fitting
• Re-connect the hose end
• Replace the fitting / hose / component
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
6.5.29 Re-install the Lower Front
and Side Panels.
6.5.30 REGISTER YOUR DRYER. See section 7. for details.
6.6 Installation Checklist
No shipping damage was detected.
Dryer location meets the following requirements:
o Well ventilated
o Free from abrasive dust or chemicals
o Drain tubing routed to unobstructed drain or bucket
o Ambient temperature is between 40° and 85° F (optimal)
Shipping block removed.
System Pressure is set to 24 PSI.
Static Pressure is set to 17 PSI.
No air leaks are present in the system.
No alarms are present on the Display Panel.
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PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
7. Registering Your Dryer
Please take a moment to register your PUREGAS P20KW / P30KW Air Dryer.
Registering is necessary to activate the Limited Warranty on your product. Once you
register, you are eligible to receive free technical support, as well as updates
concerning your PUREGAS products.
Register Online at www.puregas.com/registration
Or by Phone 1-800-521-5351 (option 2)
Have the following information available:
Model #: P20KW / P30KW Serial #:
Company Name: Location Name:
Shipping Address:
City: State: Zip Code:
Contact Name: Phone #: ( ) - ext.
Email:
Page 28 of 109 P011238 – Rev L
PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
RECOMMENDED AND MAY VOID THE WARRANTY.
8. Operating Your Dryer
8.1 Safety & Warning Information
WARNING!
Extreme care should be exercised to avoid contact with live
electrical circuits. Many procedures performed during
installation, operation, testing, and maintenance of this air dryer
require the equipment to be running, creating a situation for
potential electrical shock. It is highly recommended that you
remove all jewelry before performing any procedures.
WARNING!
Internal surfaces may be hot. Use care when coming into contact
with internal components as there is a potential for some of these
components to become hot when in operation or standby.
WARNING!
High Noise. Puregas air dryers are meant to be installed in an
unattended area.
CAUTION!
Observe precautions for handling Electrostatic Sensitive Devices.
IMPORTANT!
Performing procedures not described in this User’s Guide or
installing components not supplied by PUREGAS is NOT
Page 29 of 109 P011238 – Rev L
PUREGAS, LLC P20KW / P30KW Air Dryer User’s Guide
8.2 Connecting Air Lines to the Dryer
8.2.1 Connect the air supply
line(s) to the dryer Outlet
Pressure and/or Static
Pressure port(s).
CAUTION: Be careful when
removing outlet plugs. System
may be pressurized.
PUREGAS recommends using Installation Kit P011890 to connect your air dryer
to the air supply line (See section 11.7 for detail).
8.3 Powering the Dryer ON & OFF
CAUTION!
Incoming power to Air Dryer must be:
• 30 amp service recommended
• 20 amp slow blow fuse
• 208 - 230 VAC, 1 Phase for P20KW model
• 208 - 230 VAC, 3 Phase for P30KW model
• If hard-wiring directly, minimum of 10 AWG wire must
be used
8.3.1 POWER Circuit Breaker -
Controls the main power to
the dryer.
Page 30 of 109 P011238 – Rev L
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