P1500W2 Series Air Dryers
User’s Guide
Models covered:
P1500W2 P1500W2LP P1502W2 P1502W2LP
P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
1. Welcome & Congratulations
Congratulations on your purchase of a new PUREGAS P1500W2 Series 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 P1500W2 Series Air Dryers. Models covered
include P1500W2, P1500W2LP, P1502W2 and P1502W2LP. This guide covers 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 P1500W2 Series Air Dryers User’s Guide
3. Table of Contents
8.12 Connecting to Common Alarm
1. Welcome & Congratulations .......................... 3
Terminals ........................................................ 42
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 P1500W2 Series Air Dryer Models ............ 9
5.4 Technical Specifications ........................... 10
5.5 Dryer Function Overview ......................... 11
6. Installing Your Dryer .................................... 12
6.1 Safety & Warning Information ................. 12
6.2 Before You Begin ..................................... 13
6.3 Included Contents ..................................... 14
6.4 Required Tools and Materials ................... 14
6.5 Installation Steps ....................................... 15
6.6 Installation Checklist ................................ 22
8.13 Connecting to Power Fail Alarm
Terminals ........................................................ 43
8.14 Connecting via Web Browser ................. 44
8.15 Using the Status Screen .......................... 46
8.16 Using the Config Screen ......................... 49
8.17 Using the Event Screen ........................... 52
8.18 Using the Alarm Screen .......................... 53
8.19 Using the Firmware Screen ..................... 54
8.20 Connecting via SNMP ............................ 56
9. Testing Your Dryer ....................................... 57
9.1 Safety & Warning Information ................. 57
9.2 Measuring Compressor Amp Draw .......... 58
9.3 Measuring Compressor Voltage ............... 59
9.4 Measuring Incoming Voltage ................... 60
9.5 Measuring Voltages at Solid State Relay .. 61
9.6 Testing Consistent Heatless Dryer
Cycling............................................................ 63
9.7 Testing Unloader Valve ............................ 65
9.8 Measuring Heatless Dryer Solenoid
7. Registering Your Dryer ................................ 23
8. Operating Your Dryer .................................. 24
8.1 Safety & Warning Information ................. 24
8.2 Connecting Air Supply Line to the Dryer . 25
8.3 Powering the Dryer ON & OFF ................ 26
8.4 Using the Front Panel Display .................. 27
8.5 Identifying Dryer Alarms ......................... 29
8.6 Adjusting & Resetting Dryer Set Points ... 31
8.7 Open Front Panel ...................................... 39
8.8 Depressurizing the Dryer .......................... 39
8.9 Setting the System Pressure ...................... 40
8.10 Setting the Static Pressure ...................... 40
8.11 Setting the Outlet Pressure ...................... 41
Voltage............................................................ 66
9.9 Testing Air Dryer Fan ............................... 67
9.10 Testing Safety Relief Valve .................... 67
9.11 Testing Compressor ON/OFF Cycling ... 68
9.12 Testing High Duty Cycle Alarm ............. 69
9.13 Testing Humidity Alarm and System
Shutdown ........................................................ 70
9.14 Testing High Outlet Pressure Alarm ....... 72
9.15 Testing Low Outlet Pressure Alarm ....... 73
9.16 Testing Air Fittings & Hoses for Leaks .. 74
10. Maintaining Your Dryer ............................. 75
10.1 Safety & Warning Information ............... 75
10.2 Six Month Maintenance .......................... 77
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
10.3 8,000 Hour Maintenance ........................ 78
11. Replacement Parts & Accessories .............. 79
11.1 Dryer Parts .............................................. 79
11.2 Dryer Parts cont. ..................................... 80
11.3 Heatless Dryer Assembly Parts............... 81
11.4 Accessories for Your Dryer .................... 82
11.5 Ordering Parts from PUREGAS ............. 83
12. Service & Repair .......................................... 84
12.1 Services Offered ..................................... 84
12.2 Initiating a Service Transaction .............. 84
13. Troubleshooting Your Dryer ...................... 85
13.1 Before You Call PUREGAS ................... 85
13.2 Safety & Warning Information ............... 85
13.3 Air Dryer Won’t Power ON ................... 86
13.4 Display Screen Not Functioning ............. 87
13.13 Inconsistent Heatless Dryer Cycling ..... 91
13.14 Compressor Doesn’t Operate ................ 91
13.15 Compressor Won’t Build Pressure ........ 92
13.16 Compressor Excessive AMP Draw ....... 92
13.17 High Duty Cycle Alarm ........................ 93
13.18 Can’t Create a High Duty Cycle Alarm 93
13.19 Compressor Rapid ON/OFF Cycling .... 94
13.20 Contacting PUREGAS Technical
Support............................................................ 94
14. Appendix ...................................................... 95
14.1 Wiring Diagram ...................................... 95
14.2 Set Point Limits and Defaults ................. 96
14.3 SNMP Parameters ................................... 97
15. Limited Warranty Agreement .................... 98
Registration Reminder .................................... 98
13.5 High Outlet Pressure Alarm .................... 87
13.6 Can’t Create a High Pressure Alarm ....... 87
13.7 Low Outlet Pressure Alarm .................... 88
13.8 Can’t Create a Low Pressure Alarm ....... 88
13.9 High Humidity ........................................ 89
13.10 Can’t Create a High Humidity Alarm /
Shutdown ........................................................ 90
13.11 High Flow Rate Alarm .......................... 90
13.12 High Cabinet Temperature Alarm ........ 90
16. Contacting PUREGAS ................................ 99
16.1 General .................................................... 99
16.2 Sales ........................................................ 99
16.3 Service .................................................... 99
16.4 Technical Support ................................... 99
17. Notes............................................................ 100
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PUREGAS, LLC P1500W2 Series Air Dryers 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!
attention for these warnings and read them as you encounter them.
”, “CAUTION!”, or “IMPORTANT!”. Please be sure to pay close
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.
Page 6 of 100 P012253 – Rev. E
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.
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
y
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 dryer must be:
• 15 amp service recommended
• 10 amp slow blow fuse
• 110 - 125 VAC, 50/60 Hz for P1500W2 & P1500W2LP models
• 208 - 230 VAC, 50/60 Hz, 1 Phase for P1502W2 &
P1502W2LP models
Page 7 of 100 P012253 – Rev. E
IMPORTANT!
Performing routine maintenance as outlined in the Maintaining Your
Dryer section will ensure optimal performance over the lifecycle of
our air dryer.
IMPORTANT!
Performing procedures not described in this User’s Guide or installing
components not supplied by PUREGAS is NOT RECOMMENDED
AND MAY VOID THE WARRANTY.
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
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.
CAUTION!
Observe precautions for handling Electrostatic Sensitive Devices.
IMPORTANT!
Installation of PUREGAS air dryers are intended for network
telecommunication facilities (non-customer premises) only.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
5. Overview & Specifications
5.1 Product Description
The P1500W2 Series Air Dryers from PUREGAS are 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. These dryers are
designed specifically for indoor use.
The P1500W2 Series Air Dryers employ a fully digital operating platform offering
the most accurate readings of dryer variables, removable access panel allowing easier
access for adjustment and maintenance, and ultra quiet compressor with an industry
leading maintenance interval of 8,000 hours.
5.2 Key Features
• LCD display of all operating parameters
• Solid state microprocessor-based circuitry eliminates costly maintenance
• Accurate humidity sensing within ±0.1% RH
• Quietest dryer on the market - less than 50 dBA
• Oil-less compressors with 8,000 hour maintenance interval
5.3 P1500W2 Series Air Dryer Models
Model Description
P1500W2 110 - 125 VAC, Standard Pressure 13.8 – 103.4 KPa
P1500W2LP 110 - 125 VAC, Low Pressure 2.07 – 51.71 KPa
P1502W2 208 - 230 VAC, Standard Pressure 13.8 – 103.4 KPa
P1502W2LP 208 - 230 VAC, Low Pressure 2.07 – 51.71 KPa
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
5.4 Technical Specifications
Output
Capacity
Power
Requirements
Outlet
Pressure
Range
Outlet Air
Humidity
Compressor
Type
Drying
Method
Operating
Temperature
Range
Noise Level
Alarms
Outlet
Connections
Dimensions
Net Weight
P1500W2 P1500W2LP P1502W2 P1502W2LP
Normal: Up to 34 SCMD continuous
Maximum: 42.5 SCMD emergency
110 - 125 VAC,
50/60 Hz, 7.0 Amps
13.8 – 103.4
KPa
Two-cylinder, 3/4 HP, oil-less type Two-cylinder, 1/2 HP, oil-less type
Standard alarms – complete readings of all critical measurement points,
2.07 – 51.71
KPa
Less than 2% RH
Heatless Desiccant
5° to 30° C (optimal)
48 dBA at 3 m
individual alarm indication display
3/8” O.D. tube fitting
30.5 cm x 43.8 cm x 68.6 cm
33.6 kgs
208 – 230 VAC, 1 Phase,
50/60 Hz, 3.5 Amps
13.8 – 103.4
KPa
2.07 – 51.71
KPa
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
5.5 Dryer Function Overview
Component Description
1 Compressor Compresses drawn in ambient air.
2 Unloader Valve Relieves excess Compressor head pressure.
3 Unloader Valve Exhaust Exhausts the air from the Unloader Valve.
4 In-Line Cooler Cools compressed air prior to drying function.
5 Heatless Dryer Removes moisture from compressed air.
6 Capacity Control Valve Regulates System Pressure and prevents air from
bleeding back through the Heatless Dryer.
7 Humidity Sensor Measures the Humidity of the compressed air.
8 Air Tank Stores dry compressed air.
9 Static Pressure Regulator Regulates the Static Pressure 117 KPa (17 PSI).
Maintains constant pressure on the Flow Block
for accurate Flow measuring.
10 Flow Block Measures the Flow Rate of compressed air.
11 Outlet Pressure Regulator Regulates the Outlet Pressure.
12 Pressure Outlet Outputs the pressure set by the Outlet Pressure
Regulator.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
6. Installing Your Dryer
6.1 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.
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!
Incoming power to dryer must be:
• 15 amp service recommended
• 10 amp slow blow fuse
• 110 - 125 VAC, 50/60 Hz for P1500W2 & P1500W2LP models
• 208 - 230 VAC, 50/60 Hz, 1 Phase for P1502W2 &
P1502W2LP models
Page 12 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
WARNING!
High Noise. PUREGAS air dryers are meant to be installed in an
unattended area.
IMPORTANT!
Performing procedures not described in this User’s Guide or installing
components not supplied by PUREGAS is NOT RECOMMENDED
AND MAY VOID THE WARRANTY.
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 Ambient temperature is between 5° and 30° C (optimal).
NOTE: Higher temperatures will decrease component lifespan.
6.2.3.3 Meets the following power requirements:
• 15 amp service recommended
• 10 amp slow blow fuse
• 110 - 125 VAC
, 50/50 Hz for P1500W2 & P1500W2LP models
• 208 - 230 VAC, 50/60 Hz, 1 P
6.2.4 Notify the alarm center of the installation and potential for alarms during
the process (as necessary).
Page 13 of 100 P012253 – Rev. E
hase for P1502W2 & P1502W2LP models
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
6.3 Included Contents
(1) P1500W2 Series Air Dryer
(1) Installation Guide (not shown)
Package located inside the dryer:
(1) 120 VAC Power Cord (for P1500W & P1500WLP models)
(1) 220 VAC Power Cord (for P1502W & P1502WLP models)
(1) Tee Tube Union
(1) User’s Guide (not shown)
(1) Mini CD (not shown)
6.4 Required Tools and Materials
• 9/16” wrench
• Cup of soapy water
• 1-inch paint brush (recommended)
• Box cutter
Page 14 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
6.5 Installation Steps
6.5.1 Using a box cutter remove
the Dryer from box and 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 Open front panel latches
and remove the front panel.
6.5.3 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.
Page 15 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
6.5.4 Remove the ship-loose
contents package.
6.5.5 Remove and discard the
three packing foam blocks
from around the compressor.
6.5.6 Place the dryer at the desired operating location:
• Place the dryer on a leveled surface
• For rack install use Universal Rack Mounting Kit P011674 (section
11.4 )
• For wall install use Wall Mounting Kit P011773 (section 11.4 )
6.5.7 Verify that the dryer is
powered OFF.
Page 16 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
6.5.8 Plug AC Power Cord to
dryer.
6.5.9 Wire or plug the power
cord into:
• 110 - 125 VAC power
outlet for P1500W2 &
P1500W2LP models.
• 208 - 230 VAC, 1 phase, power outlet for P1502W2 & P1502W2LP
models.
o Line – Black (Brown)
o Neutral – White (Blue)
o Ground – Green (Green/Yellow)
6.5.10 Power the dryer ON.
NOTE: The compressor and
heatless dryer will start,
creating air flow through the
Outlet Port.
6.5.11 Set the System Pressure:
With Compressor running:
6.5.11.1 Pull the Capacity
Control Valve knob out.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
6.5.11.2 Turn the knob until
the reading on the
pressure gauge is 552
KPa ( 80 PSI ).
6.5.11.3 Push the knob in to
lock.
6.5.12 Let the dryer run until the
Humidity drops below 2%
(may take up to 15 minutes).
NOTE: Press the RESET
Button if the dryer goes into
SHUTDOWN mode.
6.5.13 Power the dryer OFF.
6.5.14 Remove the Precision
Bleed orifice from the Outlet
Port.
NOTE: Save this orifice for use in
low flow applications.
Page 18 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
6.5.15 Connect the air supply line
to the Outlet Port.
NOTE: For all dryers with minimal flow:
Install the Tee Tube Union
and the Precision Bleed
Orifice to maintain a constant
air flow. (The orifice was
removed in step 6.5.14 ).
6.5.16 Power the dryer ON.
Page 19 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
6.5.17 Set the Static Pressure:
6.5.17.1 Pull Static Pressure
Regulator knob out.
6.5.17.2 Turn knob until the
reading on the pressure
gauge is 117 KPa (17
PSI).
6.5.17.3 Push knob in to lock.
6.5.18 Set the Outlet Pressure:
6.5.18.1 Pull the Outlet
Pressure Regulator knob
out (or loosen the
retaining nut – LP
Models).
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
6.5.18.2 Turn knob until
Outlet Pressure (OUTP)
reading is at the desired
setting.
6.5.18.3 Push knob in to lock
(or tighten the retaining
nut – LP Models).
6.5.19 Check for air 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 HUMIDITY
SENSOR FITTING. DAMAGE TO THE SENSOR MAY OCCUR.
With Compressor NOT running:
6.5.19.1 Listen for any ‘hissing’ sounds which may indicate a fitting or hose
air leak.
With Compressor running:
6.5.19.2 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 loose hose
• Replace the fitting / hose / component
Page 21 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
6.5.20 Re-install the front panel.
6.5.21 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 Ambient temperature is between 5° and 30° C (optimal)
Shipping foam blocks removed from compressor.
System Pressure is set to 552 KPa (80 PSI).
Static Pressure is set to 117 KPa (17 PSI).
No air leaks are present in the system.
No alarms are present on the Display Panel.
Page 22 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
7. Registering Your Dryer
Please take a moment to register your PUREGAS P1500W2 Series 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 #: Serial #:
Company Name: Location Name:
Shipping Address:
City: State: Zip Code:
Contact Name: Phone #: ( ) - ext.
Email:
Page 23 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
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.
IMPORTANT!
Performing procedures not described in this User’s Guide or installing
components not supplied by PUREGAS is NOT RECOMMENDED
AND MAY VOID THE WARRANTY.
Page 24 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.2 Connecting Air Supply Line to the Dryer
8.2.1 Connect the air supply line
to the Outlet Port.
NOTE: For all dryers with minimal flow:
Install the Tee Tube Union
and the Precision Bleed
Orifice to maintain a constant
air flow. (The orifice was
removed in step 6.5.14 ).
Page 25 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.3 Powering the Dryer ON & OFF
8.3.1 POWER Switch - Controls
the main power to the dryer.
CAUTION!
Incoming power to dryer must be:
• 15 amp service recommended
• 10 amp slow blow fuse
• 110 - 125 VAC, 50/60 Hz for P1500W & P1500WLP
models
• 208 - 230 VAC, 50/60 Hz, 1 Phase for P1502W &
P1502WLP models
Page 26 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.4 Using the Front Panel Display
8.4.1 ALARM LED – Indicates an alarm is present.
CAUTION!
The Display Screen is covered by a clear protective layer that guards
against Electrostatic Discharge (ESD). DO NOT REMOVE THIS
LAYER.
8.4.2 RESET Button – Clears an alarm and allows the system to continue
operating.
8.4.3 HOLD Button – Freezes the current information screen on the display.
When pressed again, it will allow the information screens to begin cycling
again.
8.4.4 Arrow Buttons – Used to access, navigate, and change values in the Set
Point Adjust screens.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.4.5 Display Screen - Shows the current dryer readings. Will cycle between
the following information screens (unless the HOLD button has been
pressed):
8.4.5.1 Tank Screen
TANK – Air Tank pressure - fluctuates between 345 – 620 KPa
OUTP – Outlet Pressure regulated by the Outlet Pressure Regulator
HUMIDITY – Humidity level of the system
CABINET – Temperature of the dryer cabinet compartment
8.4.5.2 System Stat Screen
SYSTEM STAT - Running Status of the system:
• ON RUN – System is Online
• SHUTDOWN – System has been shutdown as a result of either a
Humidity or High Cabinet Temperature alarm
DUTY CYCLE – The percentage of time the compressor is ON versus
time it is OFF during the Tank pressurization cycle.
TTL TIME – How many hours the compressor has run since startup or
the last time the Total Time counter was reset.
FLOW – Air Flow Rate
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.5 Identifying Dryer Alarms
8.5.1 High Outlet Pressure Alarm -
Occurs when the Outlet Pressure
(OUTP) rises above the alarm
set point for more than one (1)
minute.
(Default setting is 83.0 KPa for Standard models / 51.71 KPa for LP models)
See section 13.5 for troubleshooting information.
8.5.2 Low Outlet Pressure Alarm –
Occurs when the Outlet Pressure
(OUTP) drops below the alarm
set point for more than one (1)
minute.
(Default setting is 45.0 KPa for Standard models / 2.07 KPa for LP models)
See section 13.7 for troubleshooting information.
8.5.3 High Humidity Alarm –
Occurs when the Humidity level
rises above the alarm set point
for more than one (1) minute.
(Default setting is 10.0%)
If this alarm is present for one
(1) minute or more, the air dryer
will go into SHUTDOWN mode
to prevent saturated air from
being delivered to the supply line.
Page 29 of 100 P012253 – Rev. E
See section 13.9 for troubleshooting information.
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.5.4 High Cabinet Temperature Alarm -
Occurs when the temperature in
the cabinet rises above 49°C for
more than ten (10) seconds.
If this alarm is present for three (3) minutes or more, the Comp ressor will
SHUTDOWN to protect against damage due to overheating. Once the
temperature lowers to 45°C the Compressor will re-start.
See section 13.12 for troubleshooting information.
8.5.5 High Duty Cycle Alarm –
Occurs when the Duty Cycle
rises above the alarm set point
for more than one (1) minute.
(Default setting is 70%)
See section 13.17 for troubleshooting information.
8.5.6 Total Time Alarm –
Occurs when the compressor has
reached an 8,000 hour
maintenance interval. Perform
the required maintenance.
See section 10.3 for maintenance information.
8.5.7 High Flow Rate Alarm –
Occurs when the Flow Rate rises
above the alarm set point for
more than one (1) minute.
(Default setting is 42 SCMD)
Page 30 of 100 P012253 – Rev. E
See section 13.11 for troubleshooting information.
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.6 Adjusting & Resetting Dryer Set Points
Dryer Set Points are simply limits programmed for a specific reading. Once this limit
is reached (or exceeded) this results in an alarm for that reading. Each of these set
points is factory programmed with a default value based on typical usage of the air
dryer. Many of the set points for dryer alarms can be modified to levels more closely
based upon your specific application.
NOTE: Reference Appendix Section 14.2 for Limits, Defaults, and Formats.
• Press the Up (K) Arrow Button to access the Set Point Adjust screens.
• Press the Up (K) & Down (L) Arrow Buttons to navigate through the available
Set Point Adjust screens.
• To change a specific Set Point:
8.6.1 High Flow Rate Alarm Set Point (default setting is 42.0 SCMD) –
8.6.1.1 Press the Right (J)
Arrow Button to access the
Change Value Screen.
8.6.1.2 Press the Right (J) &
Left (I) Arrow Buttons to
move the underscore
beneath the digit to change.
8.6.1.3 Press the Up (K) & Down (L) Arrow Buttons to change the value of
the selected digit.
8.6.1.4 Press the Right (J) Arrow Button until the underscore disappears.
8.6.1.5 Press the Right (J) Arrow Button until the underscore appears under
the correct setting (YES or
NO).
8.6.1.6 Press the Up (K) Arrow
to confirm. This will lock
in the new setting value.
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8.6.2 High Outlet Pressure Alarm Set Point
(Default setting is 83.0 KPa for Standard models / 51.71 KPa for LP
models) –
8.6.2.1 Press the Right (J)
Arrow Button to access the
Change Value Screen.
8.6.2.2 Press the Right (J) &
Left (I) Arrow Buttons to
move the underscore
beneath the digit to change.
8.6.2.3 Press the Up (K) & Down (L) Arrow Buttons to change the value of
the selected digit.
8.6.2.4 Press the Right (J) Arrow Button until the underscore disappears.
8.6.2.5 Press the Right (J)
Arrow Button until the
underscore appears under
the correct setting (YES or
NO).
8.6.2.6 Press the Up (K) Arrow to confirm. This will lock in the new setting
value.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.6.3 Low Outlet Pressure Alarm Set Point
(Default setting is 45.0 KPa for Standard models / 2.07 KPa for LP
models) –
8.6.3.1 Press the Right (J)
Arrow Button to access the
Change Value Screen.
8.6.3.2 Press the Right (J) &
Left (I) Arrow Buttons to
move the underscore
beneath the digit to change.
8.6.3.3 Press the Up (K) & Down (L) Arrow Buttons to change the value of
the selected digit.
8.6.3.4 Press the Right (J) Arrow Button until the underscore disappears.
8.6.3.5 Press the Right (J)
Arrow Button until the
underscore appears under
the correct setting (YES or
NO).
8.6.3.6 Press the Up (K) Arrow to confirm. This will lock in the new setting
value.
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8.6.4 High Humidity Alarm Set Point (default setting is 10.0%) –
8.6.4.1 Press the Right (J)
Arrow Button to access the
Change Value Screen.
8.6.4.2 Press the Right (J) &
Left (I) Arrow Buttons to
move the underscore
beneath the digit to change.
8.6.4.3 Press the Up (K) & Down (L) Arrow Buttons to change the value of
the selected digit.
8.6.4.4 Press the Right (J) Arrow Button until the underscore disappears.
8.6.4.5 Press the Right (J)
Arrow Button until the
underscore appears under
the correct setting (YES or
NO).
8.6.4.6 Press the Up (K) Arrow to confirm. This will lock in the new setting
value.
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8.6.5 High Duty Cycle Alarm Set Point (default setting is 70.0%) –
8.6.5.1 Press the Right (J)
Arrow Button to access the
Change Value Screen.
8.6.5.2 Press the Right (J) &
Left (I) Arrow Buttons to
move the underscore
beneath the digit to change.
8.6.5.3 Press the Up (K) & Down (L) Arrow Buttons to change the value of
the selected digit.
8.6.5.4 Press the Right (J) Arrow Button until the underscore disappears.
8.6.5.5 Press the Right (J)
Arrow Button until the
underscore appears under
the correct setting (YES or
NO).
8.6.5.6 Press the Up (K) Arrow to confirm. This will lock in the new setting
value.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.6.6 Compressor Total Time Reset –
The Total Time (TTL TIME) is the time the compressor runs measured in
hours since startup or the last time the compressor time counter was reset.
The dryer will display an alarm when this counter has reached 8,000 hours,
signaling is it time for maintenance.
8.6.6.1 Press the Right (J)
Arrow Button to access the
Change Value Screen.
8.6.6.2 Press the Right (J) &
Left (I) Arrow Buttons to
move the underscore
beneath the digits to change
to zero (0).
8.6.6.3 Press the Up (K) & Down (L) Arrow Buttons to change the value of
the selected digit.
8.6.6.4 Press the Right (J) Arrow Button until the confirmation screen
appears.
8.6.6.5 Press the Right (J)
Arrow Button until the
underscore appears under
the correct setting (YES or
NO).
8.6.6.6 Press the Up (K) Arrow to confirm. This will lock in the new setting
value.
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8.6.7 Reset to Factory Values –
8.6.7.1 Press the Left (I) &
Right (J) Arrow Buttons
at the same time.
8.6.7.2 Press the Right (J)
Arrow Button until the
underscore appears under
the correct setting (YES or
NO).
8.6.7.3 Press the Up (K) Arrow to confirm. This will lock in the factory
default values.
8.6.8 Alarm Delays Set Point -
The Alarm Delay allows the dryer to come out of the alarm condition on its
own without signaling an alarm.
ON (default) – waits one (1) minute before signaling alarms
OFF – signals alarms immediately
8.6.8.1 Press the Right (J)
Arrow Button to change the
value.
8.6.8.2 Press the Right (J)
Arrow Button until the
underscore appears under
the correct setting (OFF or
ON).
8.6.8.3 Press the Up (K) Arrow to confirm. This will lock in the new setting
value.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.6.9 Startup Delay Set Point (default setting is 0 sec) –
The Startup Delay keeps the compressor from turning on immediately when
the dryer is powered on for up to 10 seconds. This allows multiple dryers to
power on in separate intervals in case of a power loss.
8.6.9.1 Press the Right (J)
Arrow Button to access the
Change Value Screen.
8.6.9.2 Press the Right (J) &
Left (I) Arrow Buttons to
move the underscore
beneath the digit to change.
8.6.9.3 Press the Up (K) & Down (L) Arrow Buttons to change the value of
the selected digit.
8.6.9.4 Press the Right (J) Arrow Button until the underscore disappears.
8.6.9.5 Press the Right (J)
Arrow Button until the
underscore appears under
the correct setting (YES or
NO).
8.6.9.6 Press the Up (K) Arrow to confirm. This will lock in the new setting
value.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.6.10 Pressure Gauge –
This is an information screen
only and will not time-out,
returning to the cycling
information screens. It also
masks air dryer alarms while in use. This screen can be used during air
dryer troubleshooting.
8.7 Open Front Panel
8.7.1 Open front panel latches
and remove the front panel.
8.8 Depressurizing the Dryer
8.8.1 Open front panel (section 8.7 ).
8.8.2 Pull the ring handle on the
Safety Relief Valve until all
the air pressure is released.
8.8.3 To prevent pressure from
building back up, power the
dryer OFF (See section 8.3
for detail).
8.8.4 Close front panel.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.9 Setting the System Pressure
With Compressor running:
8.9.1 Open front panel (section
8.7 ).
8.9.2 Pull the Capacity Control
Valve knob out.
8.9.3 Turn the knob until the
reading on the Pressure
Gauge is 552 KPa (80 PSI).
8.9.4 Push the knob in to lock.
8.9.5 Close front panel.
8.10 Setting the Static Pressure
8.10.1 Open front panel (section
8.7 ).
8.10.2 Pull the Static Pressure
Regulator knob out.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.10.3 Turn knob until the
reading on the Pressure
Gauge is
117 KPa (17PSI).
8.10.4 Push knob in to lock.
8.10.5 Close front panel.
8.11 Setting the Outlet Pressure
8.11.1 Open front panel (section
8.7 ).
8.11.2 Pull the Outlet Pressure
Regulator knob out (or loosen
the retaining nut – LP
Models).
8.11.3 Turn knob until Outlet
Pressure (OUTP) reading is
at the desired setting.
8.11.4 Push knob in to lock (or
tighten the retaining nut – LP
Models).
8.11.5 Close front panel.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.12 Connecting to Common Alarm Terminals
8.12.1 Open front panel (section
8.7 ).
8.12.2 Locate the external
Common Alarm pins on the
Control Board.
8.12.3 Wire the Common Alarm
wire pair to the Control
Board as required:
• COMMON & NO for
CLOSE ON ALARM
operation.
• NC & COMMON for
OPEN ON ALARM
operation.
8.12.4 Close front panel.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.13 Connecting to Power Fail Alarm Terminals
8.13.1 Open front panel (section 8.7 ).
8.13.2 Locate the external Power
Fail pins on the Control
Board.
8.13.3 Wire the Power Fail
Alarm wire pair to the
Control Board as required:
• PWR FAIL & NO for
CLOSE ON ALARM
operation.
• NC & PWR FAIL for
OPEN ON ALARM
operation
8.13.4 Close front panel.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.14 Connecting via Web Browser
If the Air Dryer IS connected to an IP network:
• The Air Dryer must be configured with a valid IP Address, Subnet Mask, and
Gateway Address for the network.
• An IP cable is connecting the Air Dryer to the network.
• Use a computer that is on the same network as the air Dryer.
• Use Internet Explorer (6.0 or newer) or Mozilla Firefox Web Browser.
If the Air Dryer IS NOT connected to an IP network and has not been
configured with IP information:
• Use the default IP Address (192.168.1.100) of the air dryer to connect.
• Use an IP Cable (may require Cross-over cable) plugged directly into a
Laptop/PC and the other end plugged into the UTP Port on the control board
of the Air Dryer.
• Configure the network card on the Laptop/PC to use the IP Address
192.168.1.101. This will make the Laptop/PC compatible with the Air Dryer.
• Use Internet Explorer (6.0 or newer) or Mozilla Firefox Web Browser.
8.14.1 Type the IP Address of the P1500W2 Series air Dryer in the Address text
box of the web browser.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
The Web Browser connection offers five (5) screens to the user:
• Status Screen - Displays the readings and alarms monitored in the
P1500W2 Series Air Dryer. Provides remote ALARM RESET.
• Config Screen - All configurations of Set Points, Setups, and
Keyword can be made in this screen.
• Event Screen - Displays all events such as alarms, changes made, and
alarm resets registered by the P1500W2 Series Air Dryer. This screen
is informational only.
• Alarm Screen - Displays all the Alarms registered by the P1500W2
Series Air Dryer. This screen is informational only.
• Firmware Screen – Allows the user to upload any software updates or
upgrades to the Air Dryer.
8.14.2 Click on the Menu Bar selection to access a specific screen.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.15 Using the Status Screen
Displays the readings and alarms monitored in the P1500W2 Series Air Dryer.
Provides remote ALARM RESET.
• Readings are displayed in BLACK unless an alarm is present.
• Alarms are displayed in RED next to the parameter in alarm.
• Alarm Status will display Alarm if any alarms are present.
• Keyword validation is required for ALARM RESET and RESET TOTAL
RUN TIME.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.15.1 Resetting an Alarm
8.15.1.1 Click on the ALARM RESET Button to remotely reset Air Dryer
alarms displayed on Status Screen.
8.15.1.2 Enter Keyword (default is 123456)
8.15.1.3 Click on SUBMIT Button when done.
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8.15.2 Resetting Compressor Total Run Time
8.15.2.1 Click on the RESET TOTAL RUN TIME Button to remotely reset
Compressor Total Run Time displayed on Status Screen.
8.15.2.2 Enter Keyword (default is 123456)
8.15.2.3 Click on SUBMIT Button when done.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.16 Using the Config Screen
All configuration of Set Points, Setups, and Keyword can be made in this screen.
NOTE: Reference Appendix section 14.2 for Limits, Defaults, and Formats.
• Values in BLUE represent the current setting.
• The ACCEPT Button is used to change values.
• The CHANGE KEYWORD Button allows you to configure a new Keyword.
• Keyword validation is required for the following:
o Changing a Set Point value
o Changing the Keyword
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8.16.1 Changing a Set Point or Setup value:
8.16.1.1 Click on the value to change.
8.16.1.2 Type in the new value.
8.16.1.3 Click the ACCEPT Button when done.
8.16.1.4 Enter Keyword (default is 123456)
8.16.1.5 Click on SUBMIT Button when done. This will lock in the new
setting value.
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8.16.2 Changing the Keyword
8.16.2.1 Click on CHANGE KEYWORD Button to change the keyword.
8.16.2.2 Type the Old Keyword.
8.16.2.3 Type the New Keyword.
8.16.2.4 Type the Confirm New Keyword.
8.16.2.5 Click on SUBMIT Button to confirm. This will lock in the new
setting value.
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8.17 Using the Event Screen
Displays all events such as alarms, changes made, and alarm resets registered by
the P1500W2 Series Air Dryers. This screen is informational only.
• Click on the column headings to sort data according to that column.
• Click the Arrow Buttons to navigate through all the event log pages.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.18 Using the Alarm Screen
Displays all the Alarms registered by the P1500W2 Series Air Dryers. This screen
is informational only.
• Click on the column headings to sort data according to that column.
• Click the Arrow Buttons to navigate through all the event log pages.
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8.19 Using the Firmware Screen
Displays the current firmware version and date of the P1500W2 Series Air
Dryers.
• Current Version: Displays the current firmware version of the P1500W2 Air
Dryer.
• New Version File: Displays the new location and new firmware version
chosen.
• The BROWSE Button allows you to locate the new firmware file.
• The ACCEPT Button is used to change values.
• Keyword validation is required to update firmware.
Page 54 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.19.1 Updating the Firmware:
8.19.1.1 Click on BROWSE Button to locate the firmware file.
8.19.1.2 Navigate and select the correct .bin file. Press the OK Button.
8.19.1.3 Click the ACCEPT Button.
8.19.1.4 Enter Keyword (default is 123456)
8.19.1.5 Click on SUBMIT Button when done. This will lock in the new
firmware version.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
8.20 Connecting via SNMP
Using SNMP to connect and communicate with the P1500W2 Series Air Dryer is
dependant upon the specific SNMP Management software used on your network.
This software requires a SNMP Definition & Configuration File (MIB file) in order to
properly communicate with the Air Dryer. This file is named “PuregasP1500W2.mib”
and is located on the Mini CD included with your Air Dryer. It is necessary to import
this file into your SNMP operating software.
NOTE: Reference Appendix section 14.3 for a list of SNMP Parameters including
Limits, Defaults, and Formats.
Page 56 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
9. Testing Your Dryer
9.1 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.
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.
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9.2 Measuring Compressor Amp Draw
With the Compressor running:
9.2.1 Open front panel (section 8.7 ).
9.2.2 Locate wire #5 coming
WARNING!
Internal surfaces may be hot. Use care when coming into contact
with internal components as there is a potential for some these
components to become hot when in operation or standby.
directly from the compressor.
9.2.3 Use an Amp Meter to
measure the running amps.
With the compressor running,
the running amps should
measure:
• 6.3 amps or below for the
P1500W2 & P1500W2LP
models
• 3.2 or below for the P1502W2 & P1502W2LP models
9.2.4 Close front panel.
If the compressor measures over running amps indicated above, see section 13.16
for troubleshooting information.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
9.3 Measuring Compressor Voltage
WARNING!
9.3.1 Power the air dryer OFF (section 8.3 ).
9.3.2 Open front panel (section 8.7 ).
9.3.3 Depressurize the air dryer (section 8.8 ).
9.3.4 Locate wire #5 at the solid
9.3.5 Lift plastic cover on control
Extreme care should be exercised to avoid contact with live
electrical circuits. It is highly recommended that you remove all
jewelry before performing any procedures.
state relay and wire #6 on
control board.
board over wire #6.
9.3.6 Power the air dryer ON
(section 8.3 ).
9.3.7 Use a Voltmeter to measure
the voltage:
9.3.7.1 Place the probes over
terminals for wire #5
and wire #6.
The voltage should measure:
• 110 - 125 VAC for the
P1500W2 & P1500W2LP models
• 208 - 230 VAC for the P1502W2 & P1502W2LP models
9.3.8 Close plastic cover on control board over wire #6.
9.3.9 Close front panel.
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9.4 Measuring Incoming Voltage
WARNING!
9.4.1 Open front panel (section
8.7 ).
9.4.2 Locate the Incoming
POWER connector inside
the dryer.
Extreme care should be exercised to avoid contact with live
electrical circuits. It is highly recommended that you remove all
jewelry before performing any procedures.
9.4.3 Use a Voltmeter to measure
the voltage (inside dryer):
9.4.3.1 Place the probes
between the Power
Connector and terminal
insulation so that they
touch the metal contacts
for BLACK (BROWN)
wire and WHITE (BLUE) wire.
The voltage should measure:
• 110 - 125 VAC for the P1500W2 & P1500W2LP models
• 208 - 230 VAC for the P1502W2 & P1502W2LP models
9.4.4 Close front panel.
If the incoming voltage measures less than indicated above, it is recommended
that steps be taken at your facility to bring the power to the recommended level of
voltage.
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9.5 Measuring Voltages at Solid State Relay
9.5.1 Open front panel (section 8.7 ).
9.5.2 Locate the Solid State
Relay inside the Dryer at the
top of back wall.
With the Compressor running:
9.5.3 Use a Voltmeter to measure
across the AC terminals.
Should measure 0 VAC.
9.5.4 Use a Voltmeter to measure
across the DC terminals.
Should measure:
• 5 VDC for the P1500W2 & P1500W2LP models
• 12 VDC for the P1502W2 & P1502W2LP models
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With the Compressor NOT running:
9.5.5 Use a Voltmeter to measure
across the AC terminals.
Should measure:
• 110 - 125 VAC for the
P1500W2 & P1500W2LP
models
• 208 - 230 VAC for the
P1502W2 & P1502W2LP models
9.5.6 Use a Voltmeter to measure across the DC terminals.
Should measure 0 VDC.
9.5.7 Close front panel.
If any of the voltage measurements are different than indicated above, the Solid
State Relay is defective and should be replaced. See sections 11.1 for part detail
and 11.5 for ordering information.
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9.6 Testing Consistent Heatless Dryer Cycling
With the Compressor running:
9.6.1 Open front panel (section 8.7 ).
9.6.2 Place a piece of insulating
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.
material over the compressor
for this test (i.e. piece of
cardboard).
9.6.3 Locate the heatless dryer
purge solenoids inside the air
dryer.
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9.6.4 Place your hand beneath the
purge solenoids to feel for
purging air. Air should:
• Purge from Tower 1 side
• Purge from Tower 2 side
30 Seconds later
• Purge from Tower 1 side
30 Seconds later
• …and so on.
9.6.5 Remove insulating material
from top of the compressor.
9.6.6 Close front panel.
If the Heatless Dryer is not cycling consistently as described, see section 13.13
for troubleshooting information.
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9.7 Testing Unloader Valve
With the Compressor running:
9.7.1 Open front panel (section
8.7 ).
9.7.2 Locate the Unloader Valve
on the left side of the Dryer.
9.7.3 With a 9/16” wrench
disconnect hose from the
Unloader Valve.
9.7.4 Place your hand under the
Unloader Valve to verify for
air flow.
The Unloader Valve should
purge all the head pressure
when the compressor turns
off, and for approximately 2
seconds when the compressor starts up again.
If air flows from this valve continuously the Unloader Valve is defective and
should be replaced. See sections 11.2 for part detail and 11.5 for ordering
information.
9.7.5 With a 9/16” wrench
connect hose to the Unloader
Valve.
9.7.6 Close front panel.
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9.8 Measuring Heatless Dryer Solenoid Voltage
With the Compressor running:
9.8.1 Open front panel (section 8.7 ).
9.8.2 Locate the Heatless Dryer
Cycle Timer.
The timer has three (3) sets of
terminals (from left-to-right):
“VALVE” – Left solenoid
“IN” – Incoming power
“VALVE” – Right solenoid
9.8.3 Use a Voltmeter to measure
the DC voltage across each
set of “VALVE” terminals.
Continue to measure for up to
45 seconds if no voltage is
initially measured.
The voltage should measure:
• 53 VDC for the P1500W2 & P1500W2LP models
• 106 VDC for the P1502W2 & P1502W2LP models
9.8.4 Close front panel.
If the voltage does not measure as indicated above, this is an indication that the
Cycle Timer is defective and should be replaced. See sections 11.3 for part detail
and 11.5 for ordering information.
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9.9 Testing Air Dryer Fan
NOTE: To test the fan, the cabinet temperature must be above 32° C.
9.9.1 Place your hand outside the
dryer to feel for air being
blown outwards.
NOTE: The fan will turn OFF
when the cabinet temperature is
below 27° C.
If the fan is not blowing air outwards as described:
• Verify the cabinet temperature is above 32° C.
• Check for loose wiring. Refer to the Wiring Diagram (section 14.1 )
• Replace defective fan (see sections 11.1 for part detail and 11.5 for
ordering information).
• Replace defective control board if fan does not respond properly to
temperature changes (see sections 11.2 for part detail and 11.5 for
ordering information).
9.10 Testing Safety Relief Valve
9.10.1 Open front panel (section 8.7 ).
9.10.2 Pull the ring handle on the
Safety Relief Valve to verify
air pressure is released.
9.10.3 Release ring handle and
verify that no air is leaking
from the valve.
9.10.4 Close front panel.
If the Safety Relief Valve fails either test described, it must be replaced. See sections 11.2
for part detail and 11.5 for ordering information.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
9.11 Testing Compressor ON/OFF Cycling
9.11.1 Open front panel (section
8.7 ).
9.11.2 When the Unit Screen
(8.4.5.1 ) appears on the
display, press the HOLD
Button on the Front Panel to
freeze that screen.
With Compressor running:
9.11.3 Verify the compressor
shuts down when the tank
pressure (TANK) reaches
620 KPa.
If the tank pressure (TANK) fails
to reach 620 KPa, see section
13.15 for troubleshooting
information.
With Compressor NOT running:
9.11.4 Pull the ring handle on the
Safety Relief Valve to release
air pressure from the air tank.
9.11.5 Verify the compressor
turns on when the tank
pressure (TANK) falls to
345 KPa.
9.11.6 Close front panel
If the Compressor Cycling fails either test described, it indicates a problem with
the Control Board which will need to be replaced. See sections 11.2 for part
detail and 11.5 for ordering information.
Page 68 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
9.12 Testing High Duty Cycle Alarm
9.12.1 Open front panel (section 8.7 ).
9.12.2 Allow the Compressor to run and then turn off.
9.12.3 Immediately after the
Compressor turns off, pull
the ring handle on the Safety
Relief Valve until the
compressor starts running
again.
A High Duty Cycle alarm
should appear on the System
Screen.
9.12.4 Press the RESET Button.
9.12.5 Close front panel.
If you are unable to create a High Duty Cycle alarm as described, see section
13.18 for troubleshooting information.
Page 69 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
9.13 Testing Humidity Alarm and System Shutdown
9.13.1 Power the air dryer OFF.
9.13.2 Open front panel (section
8.7 ).
9.13.3 Depressurize the air dryer.
9.13.4 Unscrew and remove the
Humidity Sensor from the
Humidity Block.
9.13.5 Power the air dryer ON.
Page 70 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
9.13.6 Allow the Humidity
reading to rise over 10.0%
After three (3) minutes, verify
that a Humidity Alarm
appears and the dryer goes
into SHUTDOWN mode.
9.13.7 Replace the Humidity
Sensor into the Humidity
Block.
9.13.8 Press the RESET Button
to clear the Humidity alarm.
9.13.9 Close front panel.
If you are unable to create a Humidity / Shutdown alarm as described, see section
13.10 for troubleshooting information.
Page 71 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
9.14 Testing High Outlet Pressure Alarm
9.14.1 Make a note of the current
Outlet Pressure (OUTP)
reading.
9.14.2 Open front panel (section
8.7 ).
9.14.3 Pull the Outlet Pressure
Regulator knob out (or loosen
the retaining nut – LP
Models).
9.14.4 Turn knob clockwise until
Outlet Pressure (OUTP)
reading climbs over 83 KPa
(or over 51.71 KPa – LP models).
After one (1) minute, the High Pressure Alarm should appear on the display.
9.14.5 Turn Outlet Pressure Regulator knob counter-clockwise until Outlet
Pressure (OUTP) reading
lowers to the reading
recorded in step 9.14.1
9.14.6 Push knob in to lock (or
tighten the retaining nut – LP
Models).
9.14.7 Press the RESET Button.
9.14.8 Close front panel.
If you are unable to create a High Outlet Pressure Alarm as described, see
section 13.6 for troubleshooting information.
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
9.15 Testing Low Outlet Pressure Alarm
9.15.1 Make a note of the current
Outlet Pressure (OUTP)
reading.
9.15.2 Open front panel (section
8.7 ).
9.15.3 Pull the Outlet Pressure
Regulator knob out (or loosen
the retaining nut – LP
Models).
9.15.4 Turn knob counter-
clockwise until Outlet
Pressure (OUTP) reading
drops below 45 KPa
(or below 2.07 KPa – LP models).
After one (1) minute, the Low Pressure Alarm should appear on the display.
9.15.5 Turn Outlet Pressure
Regulator knob clockwise
until Outlet Pressure (OUTP)
reading rises to the reading
recorded in step 9.15.1
9.15.6 Push knob in to lock (or
tighten the retaining nut – LP
Models).
9.15.7 Press the RESET Button.
9.15.8 Close front panel.
If you are unable to create a Low Outlet Pressure Alarm as described, see section
13.8 for troubleshooting information.
Page 73 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
9.16 Testing Air Fittings & Hoses 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 HUMIDITY SENSOR
FITTING. DAMAGE TO THE SENSOR MAY OCCUR.
With Compressor NOT running:
9.16.1 Listen for any ‘hissing’ sounds which may indicate a fitting or hose air
leak.
With Compressor running:
9.16.2 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
Page 74 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
10. Maintaining Your Dryer
In order to ensure that your P1500W2 Series Air Dryer continues to operate efficiently
and reliably, PUREGAS recommends performing the following maintenance procedures
at the specified Six Month and 8,000 Hour intervals.
It is also recommended that you print out the included Six Month Maintenance (section
10.2 ) and 8,000 Hour Maintenance (section 10.3 ) log sheets and record all completed
maintenance for historical tracking and reference purposes.
The log sheets include a Section reference column which indicates the User’s Guide
section containing the information about the specific procedure. Please refer to these
sections for detailed procedural information.
NOTE: When operating at higher ambient temperatures, it is recommended that
maintenance be performed more frequently.
NOTE: After 16,000 hours of run time, PUREGAS recommends sending in your
compressors and heatless dryers for a complete and comprehensive rebuild by our
Service Department technicians. See sections 12.1 and 12.2 for information on
services and contacting PUREGAS.
10.1 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.
Page 75 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
y
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.
CAUTION!
SHUT DOWN IMMEDIATELY FOR REPAIRS if the air
compressor shows any evidence of overheating or presents excessive
noise.
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.
IMPORTANT!
Performing routine maintenance as outlined in the Maintaining Your
Dryer section will ensure optimal performance over the lifecycle of
our air dryer.
IMPORTANT!
Performing procedures not described in this User’s Guide or installing
components not supplied by PUREGAS is NOT RECOMMENDED
AND MAY VOID THE WARRANTY.
IMPORTANT!
Page 76 of 100 P012253 – Rev. E
After performing any maintenance, always soap test pressure fittings to
check for air leaks. Also, check for any loose or disconnected wiring.
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
10.2 Six Month Maintenance
MODEL:
SERIAL NUMBER:
LOCATION NAME:
ADDRESS:
DATE INSTALLED:
Maintenance Interval (Months)
Procedure Section 6 12 18 24 30
Install Six Month Maintenance Kit P011910 11.4
Read & Record Flow Rate (FLOW) 8.4.5.2
Measure & Record
Compressor Amp Draw
Measure & Record Incoming Voltage
(must be 110 - 125 VAC for P1500W2 &
P1500W2LP models and
must be 208 - 230 VAC for P1502W2 &
P1502W2LP models)
Set System Pressure (552 KPa / 80 PSI) 8.9
Set Static Pressure (117 KPa / 17 PSI) 8.10
Set Outlet Pressure 8.11
Test Consistent Heatless Dryer Cycling 9.6
Test Fan 9.9
Test Compressor ON/OFF Cycling 9.11
Test High Duty Cycle Alarm 9.12
Test Humidity Alarm & System Shutdown 9.13
Test High & Low Outlet Pressure Alarms 9.14 &
Test Air Fittings for Leaks 9.16
Visually Inspect Inside & Outside of Unit for Loose
Wiring or Hardware
Maintenance Performed by:
Date of Maintenance:
9.2
9.4
9.15
NOTE: COPY OR PRINT THIS PAGE AND KEEP IT WITH THE AIR DRYER
Page 77 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
10.3 8,000 Hour Maintenance
Under typical operating conditions:
8,000 hours of run time will occur between one (1) and two (2) years of use.
This will be identified by a TTL TIME Alarm on the display.
MODEL: LOCATION NAME:
SERIAL NUMBER: ADDRESS:
DATE INSTALLED:
Maintenance Interval (Hours)
Procedure Section 8,000 16,000 24,000 32,000 40,000
Install 8,000 Hour Maintenance Kit P012252 11.4
Read & Record Flow Rate (FLOW) 8.4.5.2
Measure & Record
Compressor Amp Draw
Set System Pressure (552 KPa / 80 PSI) 8.9
Set Static Pressure (117 KPa / 17 PSI) 8.10
Set Outlet Pressure 8.11
Test Consistent Heatless Dryer Cycling 9.6
Test Compressor ON/OFF Cycling 9.11
Test Air Fittings for Leaks 9.16
Reset TTL TIME Reading to Zero 8.6.6
Visually Inspect Inside & Outside of Unit for Loose
Wiring or Hardware
Maintenance Performed by:
Date of Maintenance:
9.2
NOTE: COPY OR PRINT THIS PAGE AND KEEP IT WITH THE AIR DRYER
Page 78 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
11. Replacement Parts & Accessories
11.1 Dryer Parts
Description
Power Switch M038428 1
Fan P4080 P40801 1
Static Pressure Regulator P010279 1
Air Tank 1
Solid State Relay P05992 1 3 (1)
Static Pressure Gauge P8345 1
Capacity Control Valve P010492 1 3 (1)
Humidity Sensor
Part Number
P1500W2 P1502W2
In Kit P011910 See section 11.4
Quantity
Recommend
Spare
Page 79 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
11.2 Dryer Parts cont.
Description
Part Number
Quantity
Recommend
P1500W2 P1502W2
Outlet Pressure Regulator
Standard Pressure
Low Pressure
P010279
P012316
1
Flow Block 1
Unloader Valve P011022 P010453 1
Safety Relief Valve P011777 1
Control Board Standard Pressure
Low Pressure
Heatless Dryer Assembly
P011892
P012395
See section 11.3 for detail.
1
Spare
3 (1)
System Pressure Gauge P010695 1
Air Compressor P011781 P011873 1
Page 80 of 100 P012253 – Rev. E
3 (1)
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
11.3 Heatless Dryer Assembly Parts
Part Number
Description
P1500W2 P1502W2
Heatless Dryer PHF2C106023 PHF2C20623 1
Desiccant Chamber P2004036 2
Cycle Timer P010530F1 P010530F2 1
Solenoid Valve Kit
In Kit P012252 See section 11.4 for detail.
Recommend
Quantity
Spare
Page 81 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
11.4 Accessories for Your Dryer
Recommend
Six Month Maintenance Kit
Description Part Number
Spare
Includes air intake filter, compressor
muffler, and humidity sensor.
8,000 Hour Maintenance Kit
Includes heatless dryer maintenance kit
and compressor maintenance kit.
Universal Rack Mounting Kit
Includes mounting brackets and
hardware for 19” or 23” racks.
Wall Mounting Kit
Includes mounting brackets and
hardware.
Cycle Kit
Allows multiple dryers to be cycled.
Cycle Kit Interface Kit P012341
P011910 3 (2)
P012252 3 (1)
P011674
P011773
P08033W
Page 82 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
11.5 Ordering Parts from PUREGAS
Once you have identified your required parts and accessories, contact the PUREGAS
Inside Sales / Service department to order:
IMPORTANT!
Instruction for the replacement of individual listed components goes
beyond the scope of this User’s Guide and will not be covered. Please
refer to the information included with the specific replacement part for
(800) 521-5351 (option 2)
Fax – (303) 657-2205
sales@puregas.com
parts@puregas.com
Page 83 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
12. Service & Repair
Only PUREGAS can offer factory direct rebuilds backed by a 6 month factory warranty.
• 2 week turnaround time
• Estimates available upon request
• Minimum service charge fee applies
12.1 Services Offered
• Piston Compressor Rebuild
o Replace motor bearings, piston rod assemblies, and install a
complete compressor maintenance kit.
o Test air flow, air pressure, and electrical performance
• Heatless Dryer Rebuild
o Replace desiccant, o-rings, check valves, springs, and complete
solenoid assembly
o Test proper component operation
• Desiccant Tower Repack
o Clean out tower and replace desiccant, filter, and o-ring
• Circuit Board Repair (Limited to current model boards only)
• Complete Dryer Repair
12.2 Initiating a Service Transaction
• Contact our Parts & Service Department at 1-800-521-5351 (option 3)
to obtain a Return Authorization (RA) number.
• Carefully package the item(s) to be returned.
• Mark the Return Authorization (RA) number on the outside of the
shipping container.
• Include the main address and phone number of the individual to contact
for related inquiry and follow-up information.
• Include the purchase order number.
Page 84 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
13. Troubleshooting Your Dryer
13.1 Before You Call PUREGAS
PLEASE READ THIS SECTION FIRST. It is important that you use the
following sections in order to diagnose and attempt to fix the problem with your air
dryer before placing a call to PUREGAS Technical Support.
This troubleshooting guide is intended to simplify the isolation of problems, present
possible causes, provide test procedures for verification, and suggest corrective
actions to restore the air dryer back to normal operation. Each section begins with the
most likely cause(s) of the issue. Otherwise, they start from the simplest possibilities
and progress to more complicated ones.
This troubleshooting guide is designed to be easy to follow and very effective when
used properly. It is suggested to always start at the beginning of the specific problem
section and continue in sequence, following the procedures indicated.
13.2 Safety & Warning Information
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!
Internal surfaces may be hot. Use care when coming into contact
Page 85 of 100 P012253 – Rev. E
with internal components as there is a potential for some of these
components to become hot when in operation or standby.
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
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.
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.
IMPORTANT!
Performing procedures not described in this User’s Guide or
installing components not supplied by PUREGAS is NOT
RECOMMENDED AND MAY VOID THE WARRANTY.
CAUTION!
13.3 Air Dryer Won’t Power ON
Possible Cause Check Corrective Action
POWER Switch in
OFF position
No incoming voltage to
air dryer
Page 86 of 100 P012253 – Rev. E
Do not test the Humidity Sensor with an ohm meter or apply
any DC voltage. This will render the Humidity Sensor defective.
Verify POWER switch
is in the ON position
(section 8.3 )
Measure incoming
voltage (section 9.4 )
Turn POWER switch to
the ON position (section
8.3 )
Troubleshoot facility
power supply to air
dryer
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
13.4 Display Screen Not Functioning
Possible Cause Check Corrective Action
Dryer experienced a
power spike
Power the air dryer OFF
for 15+ seconds.
Power the air dryer ON.
Ribbon cable
disconnected
Verify ribbon cable
from the decal is
Reconnect the ribbon
cable properly.
connected at the display
board
13.5 High Outlet Pressure Alarm
Possible Cause Check Corrective Action
Outlet Pressure set too
high
High Outlet Pressure
Alarm set point too low
Verify Outlet Pressure
(OUTP) reading
(section 8.4.5.1 )
Verify High Outlet
Pressure Alarm set point
(section 8.6.2 )
Adjust Outlet Pressure
Regulator (section 8.11 )
Raise High Outlet
Pressure Alarm set point
(section 8.6.2 )
13.6 Can’t Create a High Pressure Alarm
Possible Cause Check Corrective Action
Defective Outlet
Pressure Regulator
High Outlet Pressure
Alarm set point higher
than default setting
Defective Control Board Verify that the Outlet
Verify that the Outlet
Pressure Regulator can
be adjusted
(section 8.11 )
Verify High Outlet
Pressure Alarm set point
(section 8.6.2.1 )
Pressure (OUTP)
reading is higher than
the High Outlet Pressure
Alarm set point (above)
Replace Outlet Pressure
Regulator if unable to
adjust pressure
(section 11.2 )
Adjust Outlet Pressure
Regulator so that Outlet
Pressure (OUTP)
reading climbs over
verified set point
(section 9.14 )
Replace Control Board
(section 11.2 ) if Outlet
Pressure (OUTP)
reading is over verified
High Outlet Pressure
Alarm set point for more
than 1 minute and fails
to create an alarm.
Page 87 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
13.7 Low Outlet Pressure Alarm
Possible Cause Check Corrective Action
Outlet Pressure set too
low
High Flow condition Verify Flow Rate
Low Outlet Pressure
Alarm set point too high
Leak in the air system With no outlet flow, test
Verify Outlet Pressure
(OUTP) reading
(section 8.4.5.1 )
(FLOW) reading is not
higher than expected
(section 8.4.5.2 )
Verify Low Outlet
Pressure Alarm set point
(section 8.6.3 )
fittings and hoses for
leaks (section 9.16 )
Adjust Outlet Pressure
Regulator (section 8.11 )
Troubleshoot High Flow
condition
(section 13.11 )
Lower the Low Outlet
Pressure Alarm set point
(section 8.6.3 )
Tighten any loose
connections as required
13.8 Can’t Create a Low Pressure Alarm
Possible Cause Check Corrective Action
Defective Outlet
Pressure Regulator
Low Outlet Pressure
Alarm set point lower
than default setting
Defective Control Board Verify that the Outlet
Verify that the Outlet
Pressure Regulator can
be adjusted
(section 8.11 )
Verify Low Outlet
Pressure Alarm set point
(section 8.6.3.1 )
Pressure (OUTP)
reading is lower than the
Low Outlet Pressure
Alarm set point (above)
Replace Outlet Pressure
Regulator if unable to
adjust pressure
(section 11.2 )
Adjust Outlet Pressure
Regulator so that Outlet
Pressure (OUTP)
reading drops below
verified set point
(section 9.15 )
Replace Control Board
(section 11.2 ) if Outlet
Pressure (OUTP)
reading is under verified
Low Outlet Pressure
Alarm set point for more
than 1 minute and fails
to create an alarm.
Page 88 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
13.9 High Humidity
Possible Cause Check Corrective Action
Low System Pressure Verify System Pressure
Low Flow Rate Verify Flow Rate
High Humidity Alarm
set point too low
Defective Humidity
Sensor
Heatless Dryer not
cycling between towers
Defective Control Board Unplug Humidity
CAUTION!
Do not test the Humidity Sensor with an ohm meter or apply
any DC voltage. This will render the Humidity Sensor defective.
Adjust System Pressure
(section 8.9 )
(FLOW) reading is low
(section 8.4.5.2 )
Verify High Humidity
Alarm set point
(section 8.6.4 )
If Flow Rate is low,
allowing a higher alarm
set point (up to 10%)
will allow dryer to run
within acceptable levels.
Perform the Testing
Humidity Alarm and
System Shutdown test
(section 9.13 )
Verify consistent
Heatless Dryer cycling
(section 9.6 )
Sensor from Control
Board (see section 11.1
for Board location)
Humidity reading should
drop to 0%
(section 8.9 )
Increase flow by
creating an artificial leak
outside of the air dryer.
Raise High Humidity
Alarm set point
(section 8.6.4 )
Over 10% not
recommended
Troubleshoot Can’t
Create a High Humidity
Alarm / Shutdown
condition
(section 13.10 )
Troubleshoot
Inconsistent Heatless
Dryer Cycling condition
(section 13.13 )
If Humidity did not drop
to 0%, replace Control
Board (section 11.2 )
Page 89 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
13.10 Can’t Create a High Humidity Alarm / Shutdown
These troubleshooting steps assume that the Humidity Element is removed from
the Humidity Block during the Testing Humidity Alarm and System Shutdown
(section 9.13 ) procedures.
Possible Cause Check Corrective Action
Humidity Sensor Cable
disconnected
Defective Humidity
Sensor
Defective Control Board Verify that Humidity
Verify that Humidity
Sensor cable is
connected to the Control
Board
Verify that Humidity
reading fails to climb
higher than 15% or
creates sporadic
readings
reading is over 15% for
more than 1 minute
Connect Humidity
Sensor cable
Replace Humidity
Sensor (section 11.1 )
Replace Control Board
if no alarm is created
and system does not shut
down (section 11.2 )
13.11 High Flow Rate Alarm
Possible Cause Check Corrective Action
Air leak in downstream
cable outside of dryer
Verify Flow Rate
(FLOW) reading is not
higher than expected
(section 8.4.5.2 )
Air leak inside of dryer Test fittings and hoses
for leaks (section 9.16 )
High Flow Alarm set
point too low
Verify High Flow Alarm
set point
(section 8.6.1 )
13.12 High Cabinet Temperature Alarm
Possible Cause Check Corrective Action
Fan Failure Verify fan is running
(section 9.9 )
High Ambient
Temperature
Verify temperature of
dryer operating location.
Recommended ambient
temperature is 5°-30°C.
Fix downstream
problem
Reconnect or replace
bad fitting / hose
Raise High Flow Alarm
set point (section 8.6.1 )
Check for loose fan
wiring (section 14.1 )
Replace defective fan
(section 11.1 )
Lower the ambient
temperature of the
dryer’s operating
location
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
13.13 Inconsistent Heatless Dryer Cycling
Possible Cause Check Corrective Action
Defective Solenoid
Valve
Measure voltage going
to the Heatless Dryer
Solenoid Valves
(section 9.8 )
If voltage IS present,
replace Solenoid Valves
included in the 8,000
Hour Maintenance Kit
(section 11.4 )
Defective Cycle Timer Measure voltage going
to the Heatless Dryer
Solenoid Valves
(section 9.8 )
If voltage IS NOT
present, replace the
Cycle Timer
(section 11.3 )
13.14 Compressor Doesn’t Operate
Possible Cause Check Corrective Action
System is in Shutdown
state
Defective compressor Measure compressor
Defective control board Measure compressor
On the Display Panel,
verify that the system is
in SHUTDOWN state
voltage
(section 9.3 )
voltage
(section 9.3 )
Press the RESET
Button
If voltage is good,
replace compressor
(section 11.2 )
or send it in for repair
(section 12. )
If measurements are
incorrect, replace
control board (section
11.2 )
Page 91 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
13.15 Compressor Won’t Build Pressure
Possible Cause Check Corrective Action
Low System Pressure Verify System Pressure
(section 8.9 )
Defective Unloader
Valve
Test Unloader Valve
operation (section 9.7 )
If this is continuously
flowing high amounts of
air, the Unloader Valve
is defective.
Leak in air system Check all hoses and
fittings between
compressor and Air
Tank for air leaks
(section 9.16 )
Adjust System Pressure
(section 8.9 )
Replace Unloader Valve
(section 11.2 )
Connect, tighten, or
replace leaking
component
13.16 Compressor Excessive AMP Draw
Possible Cause Check Corrective Action
Restriction in air line Remove Discharge Hose
from compressor (hose
to the heatless dryer)
Re-measure Compressor
AMP Draw
(section 9.2 )
Compressor failing Remove Discharge Hose
from compressor (hose
to the heatless dryer)
Re-measure Compressor
AMP Draw
(section 9.2 )
If measurement is below
the recommended amps,
trace hoses from
compressor to Unloader
Valve looking for
restrictions or kinks
If measurement is still
above the recommended
amps, replace the
compressor
(section 11.2 )
or send it in for repair
(section 12. )
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PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
13.17 High Duty Cycle Alarm
Possible Cause Check Corrective Action
Low System Pressure Verify System Pressure
(section 8.9 )
High Flow condition Verify Flow Rate
(FLOW) reading is not
higher than expected
(section 8.4.5.2 )
Defective Unloader
Valve
Test Unloader Valve
operation (section 9.7 )
If this is continuously
flowing high amounts of
air, the Unloader Valve
is defective.
Defective Heatless
Dryer Solenoid Valve
Verify consistent
Heatless Dryer cycling
(section 9.6 )
If either side is
continuously flowing
high amounts of air, the
Solenoid Valve is
defective.
Defective control board Measure voltages at
control board
(section 9.3 )
Adjust System Pressure
(section 8.9 )
Troubleshoot High Flow
condition
(section 13.11 )
Replace Unloader Valve
(section 11.2 )
Replace Solenoid
Valves included in the
8,000 Hour Maintenance
Kit (section 11.3 )
If measurements are
incorrect, replace
control board
(section 11.1 )
13.18 Can’t Create a High Duty Cycle Alarm
Possible Cause Check Corrective Action
High Duty Cycle Alarm
set point too high
Defective Control Board Verify that the
Page 93 of 100 P012253 – Rev. E
Verify High Duty Cycle
Alarm set point (section
8.6.5 )
compressor has run
more than the verified
High Duty Cycle Alarm
set point (above)
Retest the High Duty
Cycle Alarm, allowing
the compressor to run
more often than it is off
(section 9.12 )
Replace Control Board
(section 11.2 ) if the
compressor runs more
than the verified High
Duty Cycle Alarm set
point and fails to create
an alarm.
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
13.19 Compressor Rapid ON/OFF Cycling
Possible Cause Check Corrective Action
Defective control board Measure voltages at
control board
(section 9.3 )
If measurements are
incorrect, replace
control board (section
11.2 )
13.20 Contacting PUREGAS Technical Support
Please read the Before You Call PUREGAS section (13.1 )
Once you have exhausted all of the potential problems and solutions covered in the
Troubleshooting Your Dryer section, and you still require further assistance to correct
a problem, contact PUREGAS Technical Support:
(800) 521-5351 (option 1)
Have the following information available:
Trouble Ticket # (if following-up on a previous call):
Technician Name: Phone #:
Model #:
Company Name:
City: State:
Serial #:
Location Name:
Page 94 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
14. Appendix
14.1 Wiring Diagram
Page 95 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
14.2 Set Point Limits and Defaults
14.2.1 System Adjustments
Description
System Pressure 551.6 KPa
Static Pressure 117 KPa
Outlet Pressure
(LP models)
Alarm Delay OFF ON ON
Startup Delay 0 10 0 Seconds
14.2.2 Alarm Set Points
Description
Minimum
Value
13.8
(2.07)
Minimum
Value
Maximum
Value
103.4
(51.71)
Maximum
Value
Default
Value
KPa
Default
Value
Unit of
Measurement
Unit of
Measurement
Shutdown
High Flow Alarm 0 57 42 SCMD
High Outlet Pressure
Alarm (LP models)
Low Outlet Pressure
Alarm (LP models)
High Humidity Alarm 3 15 10 % YES
High Duty Cycle Alarm 0 99 70 %
High Cabinet
Temperature Alarm
Compressor Total Run
Time Alarm
3.6
(2.14)
3.5
(2.07)
48.8 Deg C YES
8000 Hours
138.0
(51.71)
137.9
(51.64)
83
(51.71)
45
(2.07)
KPa
KPa
14.2.3 System Operations
Description ON Value OFF Value
Compressor 345 621 KPa
Fan 32 27 Deg C
Default
Value
Unit of
Measurement
Page 96 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
14.3 SNMP Parameters
Device Configuration Information
Device ID Alphanumeric (Defined by Customer)
Device Model Alphanumeric (Factory Preset)
Device Firmware Version Numeric (Factory Preset)
Current Date/Time Numeric (mm/dd/yy hh:mm)
IP Address Numeric (xxx.xxx.xxx.xxx)
Sub net Mask Numeric (xxx.xxx.xxx.xxx)
Gateway Address Numeric (xxx.xxx.xxx.xxx)
SNMP Trap Server Address Numeric (xxx.xxx.xxx.xxx)
Status Readings (Read-Only)
Outlet Pressure Reading Numeric (KPa)
Tank Pressure Reading Numeric (KPa)
Humidity Reading Numeric (%)
Flow Reading Numeric (SCMD)
Cabinet Temperature Reading Numeric (DEG C)
Compressor Total Run Time Reading Numeric (Hours)
Duty Cycle Reading Numeric (%)
System Status ON / SHUTDOWN
Compressor Status ON / OFF
Fan Status ON / OFF
Heater Status (Outdoor Unit Only) ON / OFF
Alarm Readings (Read-Only)
High Flow Alarm OK / Alarm
High Outlet Pressure Alarm OK / Alarm
Low Outlet Pressure Alarm OK / Alarm
High Humidity Alarm OK / Alarm
High Cabinet Temperature Alarm OK / Alarm
High Duty Cycle Alarm OK / Alarm
Maintenance Required Alarm OK / Alarm
Total Alarm OK / Alarm
Configuration Settings (Read-Write)
High Flow Alarm Threshold Numeric (SCMD)
High Outlet Pressure Alarm Threshold Numeric (KPa)
Low Outlet Pressure Alarm Threshold Numeric (KPa)
High Humidity Alarm Threshold Numeric (%)
High Duty Cycle Alarm Threshold Numeric (%)
Reset Compressor Total Run Time Reading Numeric (Hours)
Start Up Delay Time Numeric (Seconds)
Alarm Delay ON / OFF
Alarm Traps Sent to SNMP Server
High Flow
High Outlet Pressure
Low Outlet Pressure
High Humidity
High Cabinet Temperature
High Duty Cycle
Maintenance Required
Total Alarm
Page 97 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
15. Limited Warranty Agreement
PUREGAS products carry a one (1) year warranty against defective workmanship and
material. This period starts at date of shipment. Not included are the components subject
to normal replacement during a year’s operating time.
No claims for labor in replacing defective parts or for consequential damages will be
allowed. Replacement parts will be invoiced in the regular way, with invoices subject to
adjustment after the parts claimed defective are examined at our factory. In addition, no
material or parts will be accepted at our factory for in-warranty repairs or credit without
previous authorization from PUREGAS.
Responsibility for damages incurred in transit will be borne by the user and the user in
turn should file any damage claim against the carrier. All warranty items are F.O.B.
Broomfield, Colorado. Freight charges are the responsibility of the user.
This warranty shall not apply to any PUREGAS product which shall have been repaired
or altered in any way by anyone other than PUREGAS or authorized personnel so as to
affect, in our judgment, its proper functioning or reliability, neither will it apply to any
product which has been subject to misuse, negligence, or accident. The installation of
unauthorized non PUREGAS parts will void the warranty on those PUREGAS products.
Registration Reminder
If you haven’t already done so, please take a moment to register your PUREGAS
P1500W2 Series Air Dryer. Registering is necessary to activate this Limited
Warranty on your product. Once you register, you are eligible to receive free technical
support, as well as updates concerning your PUREGAS products.
See Section 7. for details on Registering Your Dryer.
Page 98 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
16. Contacting PUREGAS
16.1 General
PUREGAS, LLC
226A Commerce Street
Broomfield, Colorado 80020
(800) 521-5351
(303) 427-3700
Fax – (303) 657-2233
info@puregas.com
www.puregas.com
16.2 Sales
(800) 521-5351 (option 2)
16.3 Service
(800) 521-5351 (option 3)
16.4 Technical Support
(800) 521-5351 (option 1)
Fax – (303) 657-2205
sales@puregas.com
parts@puregas.com
Fax – (303) 657-2205
DON’T FORGET TO REGISTER YOUR DRYER!
See Section 7. for details on Registering Your Dryer.
Page 99 of 100 P012253 – Rev. E
PUREGAS, LLC P1500W2 Series Air Dryers User’s Guide
17. Notes
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Page 100 of 100 P012253 – Rev. E
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