DV Systems H40, H50, H50VSD-C User manual

H40, H50, H50VSD-C
Jul ‘17
- 1 -
If you require assistance, please contact your local DV Systems Distributor or Authorized Service
center. You may contact the manufacturer directly as follows:
Phone: [phone] (Canada) Web: www.dvcompressors.com
[phone] (USA)
Fax: [phone] (Canada) Email: [email protected] (Canada)
[phone] (USA) [email protected] (USA)
H40, H50
Rotary Screw
Air Compressor
Units
- - -
Installation
And
Start-up Data
Contents: Page:
Quick Start ……………............................................. 2
Safety Precautions …………………………………… 6
Unpacking and Inspection …………………………... 7
Installation – Mechanical ……………………………. 8
Lubrication ……………………………………………. 11
Installation – Electrical ………………………………. 12
AC Motor Maintenance Instructions …………………… 15
Start-up Procedures …………………………………. 16
Preventative Maintenance Schedule ………………. 17
Common Compressor Faults …………..…………… 19
Variable Speed Drive ………………………….……. 20
Air Filtration & Refrigerated Air Dryer ………..……. 23
Trouble-Shooting Guide ……………………………… 26
Warranty ……………………………………………….. 29
Please read this manual before
installing or using your Air
Compressor Unit. It contains
valuable information that will
help in the receiving,
installation, use, and
maintenance of the Unit.
Please keep this manual in a
safe place for future reference.
All of the information, policies, and
procedures in this reference manual apply
exclusively to DV Systems.

H40, H50, H50VSD-C
Jul ‘17
- 2 -
Quick Start
Mechanical Installation.
(Refer to Page 8 to 10)
 The Unit should be located in a dry, clean, cool, dust free,
and well ventilated area.
 Allow a minimum of:
 48” (1220mm) in front of and behind the Unit.
 48” (1220mm) on either side of the Unit, and
 60” (1524mm) above Unit.
 The ambient temperature should be between 10°C and 40°C
(50°F and 104°F).
 Ensure that the floor under the Unit is smooth, level and
capable of bearing the weight of the Compressor.
 If installed in a compressor room, ensure that the room is
adequately ventilated.
48”
[1220mm]
48”
[1220mm]
48”
[1220mm]
60”
[1524mm]
Fusible
Disconnect
Refer to
page 12 for
proper sizing
Unit
Nameplate
Model No.
Serial No.
Unit voltage
Installation Kit
IK4050
Flex-Hose &
Vibration Isolators
(sold separately)
Pre-Filter
Refer to
page 8 for
proper sizing
(sold
separately)

H40, H50, H50VSD-C
Jul ‘17
- 3 -
Quick Start (cont’d)
Shipping Cleats.
Your DV Systems ‘H Series’ Rotary Screw Compressor is shipped with several Shipping Cleats that
must be removed prior to the initial start-up.
The Cleats are located a) (1) under the Air End Mount and b) (1) under the Motor of the Unit. Please
remove these after locating the Unit but prior to running. Motor and Air End are orientated differently in
VSD and Belt Drive Units, Cleats can be located as shown below.
Air End Cleat Removal.
Motor Cleat Removal.
The Motor is fastened to the Unit framework by means of (1) Shipping Cleat as indicated below. Access to the
Cleat is by means of both the front and rear of the Unit.
Remove the fasteners and slide the Cleat out of the assembly.
Fasteners
H50 VSD
 Locate the Air End Mount at the back of the Unit.
 Locate the orange Shipping Cleat under the Air End Mount.
 Remove the Bolt and Washers from the Cleat, and slide the Cleat out.
H40/50 BD
(1) Cleat at
Air End
Motor Cleat from the Front of Unit. Motor Cleat from the Rear of Unit.
Shipping Cleat
Fasteners
Shipping Cleat

H40, H50, H50VSD-C
Jul ‘17
- 4 -
Correct
Oil Level
Quick Start (cont’d)
Lubrication.
(Refer to Page 11)
Rotation.
(Refer to Page 13)
 Ensure the oil level
in the Air End is to
the level as shown
while at rest.
 Check the oil after
the Unit has been at
rest for a minimum
of 5 minutes.
Oil Fill Port
Oil Drain Valve
Oil Drain Tube
External Oil Level Indicator
showing proper oil level
when Unit is off
Fixed Speed Units:
 Units are equipped with Advanced Phase
Detection feature which prevents Units
from rotating in the reversed direction.
 An ‘E:0090 Phase Sequence’ Error will
appear on the Controller Screen if the
phase sequence is incorrect. If this occurs,
simply switch the incoming leads ‘L1’ and
‘L3’ at the Control Panel
Note: Units with serial number 077771 and
earlier may be equipped with Anti-Rotation
Switches.
‘E:0902 Anti Rotation’ will appear on the
Controller Screen if the rotation is incorrect.
If this occurs, change ‘L1’ and ‘L3’ to the
Control Panel.
Arrows Indicate
Correct Rotation
Picture from Front of Unit
Picture from Rear of Unit
Variable Speed Units:
 The Inverter to the Motor is pre-wired at the
factory.
 Remove the Cover Plate from the Coupling
area and pay close attention to the arrow
indicating the correct rotation.
 To verify the correct rotation, start the Unit
and turn off immediately using the
Emergency Stop Button.
 If the rotation is not correct, simply change
two of the power leads to the Unit.

H40, H50, H50VSD-C
Jul ‘17
- 5 -
Quick Start (cont’d)
Unit Operation.
Shown below is the ‘CSC300’ Controller which regulates the operation of the Unit. It is used to start and stop the
Unit, and it provides information as to system pressure, temperature, etc.
Starting the Unit: Press the ‘Start’ Button.
Stopping the Unit: Press the ‘Stop’ Button
Note:
1. Do not stop the Unit using the ‘Emergency Stop’ Button unless there is a danger to the product or of
personnel injury.
2. Do not stop the Unit by use of a disconnect or breaker.
Using the Emergency Stop Button, disconnect, or breaker to stop the Unit will not
allow the Unit to go through an unloading sequence, and could result in damage to
the Motor, Starter, or other electrical components. Damage caused in this manner
is not covered by the manufacturers Warranty.
Enter, Up, Down & Escape.
Used in the programming and changing
of operating parameters of the Unit.
Emergency Stop.
Will quickly shut the
Unit off. Is only to be
used in an
emergency.
Digital Readout.
Indicates Unit pressure,
temperature, etc.
Stop.
Causes the Unit to
enter ‘Idle’ mode
and then shut off.
Start.
Starts the Unit.

H40, H50, H50VSD-C
Jul ‘17
- 6 -
Safety Precautions
In order to operate the Compressor Unit safely and correctly, we have opted to use the following symbols to make
you aware of important points. These points relate to user safety and preventing equipment problems. Please pay
close attention to these sections.
The following hazards may occur during the normal use
of the equipment. Please read the following chart.
Area: Hazard: Safeguards:
What to look for: What may occur if precautions are not observed. How to avoid the hazard.
Tampering with the Unit while under full or partial
pressure may cause an explosion.
Relieve all pressure from the Unit
before attempting any repair or
maintenance work.
As the Unit starts and stops automatically, serious
injury may result from working on the Unit with the
power still in the on position.
Shut off all power to the Unit before
attempting any repair or maintenance
work.
As the Unit starts and stops automatically, do not
come into contact with moving parts.
Shut off all power to the Unit before
attempting any repair or maintenance
work.
Air compressed by the Unit is not suitable for
inhaling. It may contain vapours harmful to your
health.
Never directly inhale compressed air
produced by the Compressor.
The Compressor Pump, Motor, and Tubing
become hot when running. Touching these areas
may cause severe burns.
Never touch the Pump, Motor, or
Tubing during or immediately after
operation.
As the electrical components on the Unit are
General Purpose, there is a potential for explosion
should vapours be present in the area.
The Compressor must be a minimum
of 20 feet (6.1 meters) from any source
of potentially explosive vapours.
Important safety Information.
A hazard that may cause
serious injury or loss of life.
Important information that
indicates how to prevent
damage to equipment, or how
to avoid a situation that may
cause minor injury.
Information that you should
pay special attention to.

H40, H50, H50VSD-C
Jul ‘17
- 7 -
Unpacking and Inspection
It is the responsibility of the receiver of the goods, either the Distributor or Customer, to ensure that the product
has been shipped in full, and has arrived in suitable condition. Damage to the product may not be visible at time
of off-loading, but may only become apparent upon unpacking or start-up.
Some areas to initially check are as follows:
a) Check for damage to the crating and/or packaging.
b) Check the exterior of the Cabinet for damage, either cosmetic or mechanical.
c) If there is mechanical damage, open the Cabinet to determine whether there is any internal
damage to the Unit.
Should there be damage to the product or shortages in shipment:
1) Stop any further unpacking or operation of the product.
2) Make note of the problem on the Freight Bill, should it concern a shortage or visible
damage to the product.
3) Should the damage be noticed only after the product has been received, contact the
transport company immediately to file a claim.
Depending on the problem, it may be wise to photograph the damage. Also, it may
be wise to discuss with the carrier representative the time allotted to give notice of loss
or damage to the product; there may be guidelines which limit timeframes of same.
4) Do not attempt further unpacking or operation of the product. Also, do not discard
any packing material used.
5) A Loss or Damage Claim must be submitted to the carrier and supported by the
following documents:
- Copy of Freight Bill of Lading
- Copy of the Invoice and Estimate to repair, in case of damage
- Damage Report
- Copy of photos, if applicable
Each DV Systems Air Compressor is carefully tested and
inspected before shipment. Though every attempt is made to
ensure the safe and complete shipment of our product, freight
damage or misplacement of goods may occur.
Shipments of DV Systems products are the property of the
Consignee when the products leave our facility. DV Systems Inc.
is not responsible for any damages or shortages caused to the
product after it has left our shipping dock.

H40, H50, H50VSD-C
Jul ‘17
- 8 -
Installation – Mechanical
The Importance of a Proper Installation
As with all Air Compressors, a proper installation is key to both a) long Compressor life and b) quality compressed
air. A Compressor Unit not installed correctly, and coupled with a poor maintenance program, can be plagued
with costly issues not covered by the manufacturer’s warranty.
The drawing below indicates the components required for a good installation.
As the ‘H40’ and H50’’ Screw Units do not include an Air Receiver, one must be located as shown. And though
additional filtration and a Refrigerated Dryer is shown, they may not be required in all instances, this is dependent
on the quality of compressed air required.
No.: Part Number: Description: Notes:
1 H40 / H50 40 / 50 HP Compressor Unit
2 H-9038 1-1/4” x 16” (407mm L) Long Flex
3 Advanced Air Pipe Systems 1-1/4” Diameter Pipe Contact Distributor for sizing
4 TA-9008-2 Air Receiver, 240 Gallon, 200 psi Safety Valve sized to application
5 DF294C & DF294A Canister & 1 Micron Element
6 ASD200 Refrigerated Air Dryer
7 DF294C & DF294 Canister & 0.01 Micron Element
8 ECOTRONxx Oil Water Separator Use ‘50’ for 40HP, ‘90’ for 50HP
9 KK-9860 Zero-Loss Autodrain
Plant piping from the system as shown above should be sized based on the Unit CFM and the length of the piping
as follows. Using smaller piping will greatly restrict air flow and cause issues downstream of the Unit.
CFM @ psi: HP 50 Feet 75 Feet 100 Feet 150 Feet 200 Feet 250 Feet 300 Feet
150 @ 145 40 1-1/4” 1-1/4” 1-1/4” 1-1/2” 1-1/2” 1-1/2” 1-1/2”
165 @ 110
1-1/2” 1-1/2” 1-1/2” 2” 2” 2” 2”
170 @ 175 50VSD
186 @ 145 50
200 @ 110

 



 
Piping between Unit and Tank not
to exceed 10 ft (3 m)
Additional dry Air Receiver down-stream
could assist for demand surges.


H40, H50, H50VSD-C
Jul ‘17
- 9 -
The Compressor must not be operated in
a confined area where the heat from the
Unit cannot readily escape.
Installation – Mechanical (cont’d)
Moving of the Unit.
When moving the Air
Compressor, the forklift or hand
lift forks go under the Unit from
the directions as indicated.
Slots in the Unit Base are
provided for moving of the
Compressor.
Please be advised that care
must be taken when moving and
positioning the Units as they may
be top heavy.
Location of the Unit.
Items to consider when installing the Unit are as
follows:
 The Unit should be located in a dry, clean, cool,
dust free, and well ventilated area. If possible, the
Compressor should be located in a separate
room or area, away from the general operations
of the shop.
 Allow a minimum of 48” (1220mm) around and
60” (1524mm) above the Unit for easy access to
the various sides, this being for both the proper
ventilation of the Unit and ease of servicing.
 Ensure that the floor under the Unit is smooth,
level and capable of bearing the weight of the
Compressor. The Compressor must sit level on
the floor.
 If installed in a compressor room, ensure that the
room is adequately ventilated. (One Horsepower
produces approximately 2500 BTU/HR.) See
Page 10.
 The ambient temperature should be between
10°C to 40°C (50°F and 104°F).
 If installing the Unit on a mezzanine, ensure that
the structure can safely support the weight of the
Unit. As well, the sound level of the Unit may
increase due to the vibration transmitted through
the floor; use Vibration Pads to lessen this.
Many common Compressor problems can be
attributed to the location or installation of the Unit.
Make sure the Unit is in a suitable location, and
installed correctly.

H40, H50, H50VSD-C
Jul ‘17
- 10 -
Installation – Mechanical (cont’d)
Shown below are items which assist in making a good installation. These are both intake and exhaust ductwork,
helping the Unit to a) draw in clean outside air and b) exhaust the warmer air away from the Unit. The warmer air
may be used, with the inclusion of a damper in the exhaust ducting, to warm the interior of the building during the
colder months of the year.
Intake and Exhaust Ducting

H40, H50, H50VSD-C
Jul ‘17
- 11 -
Lubrication
Initial Start-up.
Each Compressor Unit built is extensively tested at
the factory before shipment. The Unit is shipped with
the original oil in it as used for testing purposes.
Check the Oil level and for any Oil leaks on a daily
basis. This must be done when the Unit is off. Top up
the Oil level when necessary.
Use only DV Systems ‘DEV-3000’ Synthetic Oil. As
well, do not mix the ‘DEV-3000’ with any other
lubricant.
Subsequent Oil Changes.
Drain the existing oil from the Unit. (Please be
advised that the Unit cannot be drained fully of oil, as
some oil may remain in various components ie
Cooler, Tubing, etc.)
Fill the Oil Reservoir to the Metal Band on the
External Oil Level Gauge as shown below. Do not
under or overfill. See drawing below.
Use only DV Systems ‘DEV-3000’ Synthetic Oil,
available in both 1 US gallon (3.8 litre) jugs or 5 US
gallon (5 x 3.8 litre) pails. Any remaining oil may be
used for ‘top-ups’.
The ‘MK-H50’ Maintenance Kit includes:
(5) US Gallon (5 x 3.8 litre) Oil (‘DEV-3000’)
(2) Oil Filter (’DSC-624’)
(1) Air/Oil Separator Filter (’DSC-002051’)
(2) Air Filter (’DSC-002073’)
(2) Air Filter (‘DSC-002074’)
(1) In Line Filter (‘DSC-612)
This Kit should be used in the regular servicing of
your Unit.
Do not attempt to operate the Unit without
first checking whether there is oil in the Oil
Reservoir. Add oil as required. Serious
damage may result from use, however
limited, without oil.
Use of improper oil may negatively affect
Compressor performance or shorten Unit life.
Resulting problems are not covered by the
DV Systems Inc. Warranty.
Condensation (water) may form in the Oil
Reservoir with the oil. If this occurs, as the
water will tend to settle on the bottom of the
Reservoir, drain the water from the Reservoir
until you notice oil draining. Top up the
Reservoir with new oil using only the DV
Systems ‘DEV-3000’ oil.
Oil Drain Tube
Oil Drain Valve
External Oil Level Indicator
showing proper oil level
when Unit is off
Oil Fill Port Correct
Oil Level

H40, H50, H50VSD-C
Jul ‘17
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Installation - Electrical
General Information.
 Ensure that all wiring, fusing, etc is done in a manner that meets with the appropriate codes and
regulations.
 See the sales drawings and electrical schematic contained in this manual for information about Motor
nameplate amps, this is used to determine the appropriate Disconnect / Breaker and Wiring sizes.
 Units equipped with Variable Speed Drives (VSDs) MUST use FAST-ACTING FUSES. Refer to the table
below for fuse sizes.
It is your responsibility to ensure that the Compressor
Unit is electrically connected in a safe and correct
manner. Any electrical work should be carried out
by a competent Electrician, and be done in such a
way that it meets all applicable Codes and
Regulations.
Ensure that a suitable Fused Disconnect or Breaker
(by others than DV Systems) is installed in the
electrical supply before the Compressor Unit.
Electrical wiring and conduit from the building supply,
through the Compressor Cabinet, and to the Switch
in the Compressor Control Panel, must be rated for
125°C (257°F) or higher.
Failure to observe any of the above precautions could result in severe personal injury or death,
and/or damage to the Unit.
 Failure to correctly connect the
Compressor to your building's electrical
services may result in serious personal
injury or damage to the equipment.
 Install all covers and panels before
applying power to the Unit.
 Before servicing the Unit, ensure the
power source has been shut down and
locked off.
 Read and understand the information
contained in this manual before installing
or operating the Unit.
Fusible Disconnects.
VSD Units:
HP Voltage Fuse
Type
Fuse
Amp
DV
Fuse
Part
No.
DV Disconnect
Kit (Disconnect +
Fuses)
50
200
DFJ/
HSJ
175 F175 FD-175
230 150 F150 FD-150
460 70 F070 FD-070
575 60 F060 FD-060
Fixed Speed Units:
Use TIME-DELAY type fuse.
Max. Allowable Fuse =
1.75 x Motor Full Load Amp

H40, H50, H50VSD-C
Jul ‘17
- 13 -
Use of an incorrect Motor for your
particular building service will result in
premature Motor failure, and is not
covered by the DV Systems or Motor
Manufacturers Warranty.
Installation – Electrical (cont’d)
Motors.
Wiring must be done in a manner that the full Motor
nameplate voltage +/- 10% is available at the Motor
terminals during start-up. Contact your local Distributor or
Service Centre if additional information is needed.
The Warranty that exists on the Electric Motor is that of the
original manufacturer. In the event of a Motor failure, contact
your DV Systems Distributor or Service Centre for the
location of the nearest authorized Motor Service Centre.
Motor / Air End Rotation.
It is critical that the Motor and Air End in the Rotary Screw Unit be turning in the correct manner as the Unit may
not equipped with an ‘Anti Rotation Switch’. Irreparable damage will be done if the Unit rotates in the
reverse direction. Motor / Air End rotation must be visually verified. The correct rotation is as indicated at the
Coupling area or Belt Housing of the Unit.
Fixed Speed Units: Variable Speed Units:
 With Advanced Phase Detection feature, an
‘E:0090 Phase Sequence’ Error will appear
on the Controller Screen if the phase
sequence is incorrect. If this occurs, simply
switch the incoming leads ‘L1’ and ‘L3’ at
the Control Panel.
 If ‘Anti Rotation’ Switch is present, an
‘E:0902 Anti Rotation’ Error will appear on
the Controller Screen if the rotation is
incorrect. If this occurs, simply change ‘L1’
and ‘L3’ at the Control Panel.
 The Inverter to the Motor is pre-wired at the
factory.
 Remove the Cover Plate from the Coupling
area and pay close attention to the arrow
indicating the correct rotation.
 To verify the correct rotation, start the Unit
and turn off immediately using the
Emergency Stop Button.
 If the rotation is not correct, simply change
two of the power leads to the Unit.
Arrow Indicates
Correct Rotation
Coupling
Picture from Front of Unit
Picture from Rear of Unit

H40, H50, H50VSD-C
Jul ‘17
- 14 -
Installation – Electrical (cont’d)
Cooling Fan Rotation.
To ensure that the Unit operates at optimum
temperatures, a Cooling Fan is located on the top of
the Unit to draw warm air from the Cabinet
Enclosure. It is imperative that the Fan rotate in the
correct direction.
A label inside the Unit (as
shown at right) indicates the
proper Fan rotation.
If the Cooling Fan rotation is incorrect, switch the
incoming leads ‘L1’ and ‘L3’ to the Unit.
Wiring from
Cooling Fan

H40, H50, H50VSD-C
Jul ‘17
- 15 -
AC Motor Maintenance Instructions
Cleaning.
To ensure that the Motor operates at optimum temperatures and provides years of trouble-free service,
periodically clean the outside of the Motor Housing of any build-up of dust, etc. Though it is not anticipated that, if
installed correctly and in a suitable environment, there should be much build-up on the Motor, keeping the
Housing clean will allow the Motor to operate more efficiently.
Lubrication.
This is a ball bearing motor. The bearings have been lubricated at the factory. Motors that do not have re-grease
capability are factory lubricated for the normal life of the bearings.
Some motor designs use different bearings on each motor end. Noted below is a chart outlining the interval at
which the bearings of Motor should be lubricated, this based on the Bearing Sizes. This must be part of a regular
maintenance schedule.
Motor
In HP
Interval
in Hours
Drive End * Opposite Drive End
Weight of Grease Volume of Grease Weight of Grease
Ounces (Grams) In3 (Teaspoon) Ounces (Grams)
50 1,700 0.76 (20.1) 1.2 (4.0) 0.61 (17)
40 2,000 0.76 (20.1) 1.2 (4.0) 0.61 (17)
*Drive End would be the end that is connected to the driven device (air end).
**Opposite Drive End would be the end that is connected to the fan assembly.
The above chart is based on a standard environment in which the Motor is operating of 40°C (104°F). For other
conditions, please multiply the Hour Interval from the chart above by the factor as indicated below.
Severity of Duty Factor Environmental Conditions
Standard 1.0 40°C (104°F) , clean, little corrosion
Severe 0.5 50°C (122°F), moderate dirt, corrosion
Extreme 0.1 > 50°C (122°F), severe dirt, abrasive dust
Low Temperature 1.0 < 30°C (86°F)
Lubricant.
50 HP Motors are pre-greased with High temperature Dow Corning ‘DC44’ Medium Grease. You must use this
grease. Do not mix with other types of grease.
40 HP Motors are pre-greased, normally with Mobil Polyrex EM. Equivalent and compatible greases are Texaco
Polystar, Chevron SRI #2, and Shell Dolium BRB.

H40, H50, H50VSD-C
Jul ‘17
- 16 -
Do not attempt to operate the Unit without first checking
whether there is oil in the Oil Reservoir. Add oil as required.
Serious damage may result from use, however limited, without
oil.
Initial Start-up
1) Open the RH Front Access Panel, and ensure
that there is sufficient Oil in the Oil Reservoir.
Refer to the ‘Lubrication’ section (Page 11) in this
manual for proper type and level of Oil.
2) Ensure the Shipping Cleats are removed as
indicated on Page 3.
3) Do a brief visual inspection of the Unit.
Start-up Procedures
Do not place any materials in close proximity
to the Compressor. Placing materials against
or close to the Unit will limit the cooling
required, and could lead to premature failure.
Shut off all power to the Compressor Unit
before attempting any repair or maintenance.
Adjusting the settings of the Controller could adversely affect
the performance of the Unit. Only those individuals with
knowledge of the Unit should make any adjustments.
Unit Controls 4) Place the Fused Disconnect / Breaker in the ‘On’
Position. Check that there is power to the
Controller.
5) Turn the Unit on momentarily by pressing the
‘Start’ Button on the ‘CSC300’ Controller.
Immediately press the ‘Emergency Stop’ Button
to stop the Unit. Ensure the Motor/Air End are
rotating in the correct direction. See ‘Motor/Air
End Rotation on Page 13.
Also ensure the Cooling Fan is rotating correctly.
See Page 14.
6) Allow the Unit to operate for approximately 15
minutes. During this time, measure the amp draw
and voltage of the Unit at full load, and ensure
that these do not exceed the figures as noted on
the Unit.
7) Stop the Compressor by pressing the ‘Stop’
Button on the Units ‘CSC300’ Control Pad. Check
for any air or oil leaks.
If the rotation of the Air End is incorrect,
switch the phases ‘T1’ and ‘T3’ between the
Inverter and Motor. Refer to the
accompan
y
in
g
wirin
g
schematic.
Emergency Stop Button
Do not use to normally stop the Unit. To be used to
stop the Unit in emergencies only. Normal use will
damage electrical controls, drive, and Shaft Seal.
Stop Button
Use this to
shut the Unit
off. Allows the
Unit to idle
and then stop
after several
seconds.
Start Button
Allows the Unit to
start.

H40, H50, H50VSD-C
Jul ‘17
- 17 -
Preventative Maintenance Schedule
Noted on the following pages are general Maintenance guidelines based on average working conditions. Should
the Unit be worked under extreme conditions, please contact your DV Systems Distributor for further input. As
well, all maintenance/service work must be carried out by a qualified Technician.
The typical operating temperature of the Unit, this dependent on ambient temperatures, is between 70°C and
85°C (158°F and 185°F).
If the operating temperature of the Unit is too low (less than 70°C (158°F)):
 condensation will build up in the system and mix with the oil, causing damage to the internal components
in the Unit
 Change the ambient conditions to increase the operating temperature.
If the operating temperature of the Unit is too high (above 85°C (185°F)):
 the oil will oxidize and lose it’s properties, this causing internal damage to components as well
 to combat this, the oil must be changed more often than noted below.
When servicing the Air Compressor, shut off all
power to the Unit, and drain it of air pressure.
It is the responsibility of the Compressor owner
to ensure that a regular Maintenance Schedule
is followed.
Note: For Compressor Units used in an environment where the ambient temperature is above
32°C (90°F), the components marked with a ‘ # ’ (on the ‘Maintenance Schedule’ on Page
17) must be changed more frequently.
Regular Maintenance Items.
DV Systems offers a Maintenance Kit for your Unit,
namely:
MK-H50 40/50 HP ‘H Series’ Units
Each Kit consists of the following items, follow
Schedule Table on page 17 for the Maintenance
Schedule.
(5) US Gallon (5 x 3.8 litre) Oil (‘DEV-3000’)
(2) Oil Filter (’DSC-624’)
(1) Air/Oil Separator Filter (’DSC-002051’)
(2) Air Filter (’DSC-002073’)
(2) Air Filter (‘DSC-002074’)
(1) In Line Filter (‘DSC-612)
Internal Access for Maintenance.
The internal components of the Unit are accessible
for servicing by way of removing both Front Panels
and the Bottom Rear Panel.
Front Access
Rear Access

H40, H50, H50VSD-C
Jul ‘17
- 18 -
Preventative Maintenance Schedule (cont’d)
Maintenance Item: Daily
Maintenance Interval (in 000’s of Hours)
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
Compressor Room
Temperature Inspect Ambient Temperature should be between 10°C and 40°C (50°F and 104°F)
Cleanliness Inspect
Air Compressor Unit
Check Oil Level Inspect
Replace Oil # (See Note b) (1) X X X X X
Replace Oil Filter # (2) X X X X X X X X X X
Replace Air / Oil Separator # (3) X X X X X
Replace Air Intake Filter # (4) X X X X X X X X X X X X X X X X X X X X
Replace Coupling Spider* (5) X X X X X
Replace Belts** X X X X X
Replace Tank Relief Valve X X X
Replace Solenoid (6) X X X X X
Rebuild Intake Valve (7) X X X X X
Rebuild Thermo Valve (8) X X X
Rebuild Minimum Pressure Valve (9) X X X X X
Replace Scavenge Line Filter (10) X X X X X
Motor Bearing Lubrication Refer to Motor Manufacturer’s Recommendations on Page 14
*H series compressors with Variable Speed Drive
**H series fixed speed compressors
Notes: a) For Compressor Units used in an environment where the ambient temperature is above 32°C (90°F),
or b) where the Unit temperature runs regularly above 80°C (175°F), the components marked with a
‘#’ must be changed twice as often (example: in 4000 hours instead of 8000), and not as noted
above.
b) The DV Systems Oil used in the Rotary Screw Units is rated as an 8000 hour Oil. A complete Oil
change must be done every 8000 hours of Unit operation, or every 12 months, whichever occurs first.
Please refer to the Warranty on Page 28 for further information.
c) If a component, during a regular inspection, has proven to be defective or unfit for regular operation, it
must be repaired or replaced.
Parts and Repair Kits based on the above chart are as follows:
(1) Oil: DEV-3000
(2) Oil Filter DSC-624
(3) Air / Oil Separator: DSC-002051
(4) Air Intake Filter DSC-002073 + DSC-002074
(5) Coupling Spider DSC-001983
(6) Solenoid DSC-002052
(7) Intake Valve Repair Kit DSC-002075
(8) Thermo Valve Repair Kit: DSC-111-1
(9) Minimum Pressure Valve Kit: DSC-231
(10) Scavenge Line ‘In Line’ Filter DSC-612
Ambient Filter DSC-002069
As noted previously, the ‘MK-H50’ Maintenance Kit includes the following items:
(5) ‘DEV-3000’ US Gallon (5 x 3.8 litre) Oil
(2) ‘DSC-624’ Oil Filter
(1) ‘DSC-002051’ Air/Oil Separator Filter
(2) ‘DSC-002073’ Air Filter
(2) ‘DSC-002074’ Air Filter
(1) ‘DSC-612’ In Line Filter

H40, H50, H50VSD-C
Jul ‘17
- 19 -
Common Compressor Faults
Common Faults.
Noted below are the most common Faults experienced.
‘CSC300’ Alarms.
There is an issue with the Unit, but it will still operate.
Code: Description: Most Common Items to Check:
A:0083 Motor phase imbalance Check supply voltage, fuses and cable
A:0119 Delivery Pressure High Solenoid not working, Intake Valve Orifice clogged, Transducer dirty or faulty, pressure changed
incorrectly, alternate external pressure source
A:0129 Delivery Temperature High Ambient temp high, Unit dirty, low oil level, no air flow through Unit, Temp Sensor defective
A:2816 Power Failure Occurred Press ‘Reset’ Button and restart Unit
A:4819 Routine Service Due Service Unit and reset Service Timer (Page ‘P16’ on Controller)
A:4809 Grease Service Due Service motor and reset Grease Service Timer (Page ‘P16’ on Controller)
‘CSC300’ Shutdown Errors.
There is an issue with the Unit, and the Unit will not operate until the Fault has been addressed.
Code: Description: Most Common Items to Check:
E:0010 Emergency Emergency stop switch is pressed
E:0070 Fan Motor Alarm Check electrical connections
E:0082 Motor Overload Motor drawing high amps, low voltage, high pressure settings, low oil level
E:0083 Motor phase Imbalance Check motor connections in the control panel and motor connection box
E:0090 Phase Sequence Rotation of Motor wrong, sequence order of supply cable incorrect
E:0091-
0093 Phase L1/L2/L3 Fault Check supply voltage, fuses and cable
E:0115 Delivery Pressure Sensor Fault Transducer not making good electrical contact, or defective
E:0119 Delivery Pressure High Solenoid Not working, Intake Valve Orifice clogged, Transducer dirty or faulty, pressure
changed incorrectly, alternate external pressure source
E:0125 Delivery Temp Sensor Fault Temperature Sensor not making good electrical contact, or defective
E:0129 Delivery Temperature High Ambient temp high, Unit dirty, low oil level, no air flow through Unit, Temp Sensor defective
E:0902 Anti-Rotation Rotation of Main Motor wrong, Solenoid Valve not relieving pressure
E:1902 Inverter Fault Variable frequency drive tripped. Check VFD screen for more info.

H40, H50, H50VSD-C
Jul ‘17
- 20 -
Variable Speed Drive
Your DV Systems ‘H Series’ Rotary Screw Compressor Unit may have been equipped with a ‘Variable Speed
Drive’, or ‘VSD’. A Compressor with an integral VSD can handle the constant loads for an extended period of time
(running at 100% duty cycle), but it can also run at slower speeds to accommodate lower air demands at other
times of the day.
Variable Speed Drives can reduce the overall energy costs associated with operating the Compressor Unit by
simply controlling the speed of the Motor and Air End to match consumption. As Rotary Screw Compressors
using the variable speed technology match the varying air demands and therefore have the ability to impact your
energy consumption, some energy providers have offered rebates when these Units are purchased. Consult your
local energy provider to determine if this applies.
Shown below is an ‘H Series’ Unit with a Variable Speed Drive.
VSD Interface
The VSD Controller Interface is shown at right. It
provides a means of operating, monitoring, and adjusting
the parameters of the Variable Speed Drive.
Please note that adjustments to the parameters of the
Variable Speed Drive should be made only by qualified
Technicians, or with the guidance of factory trained
personnel. Incorrect adjustments will affect the
performance of the Unit, and could result in damage to
the Drive.
Variable Speed Drive
‘CSC300’ Controller
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