Gardner Denver DRUM XK Series User manual

XK SERIES SCREW
COMPRESSOR
Models
XK12
XK12HD
Installation,
Operating &
Maintenance
Manual
(Original Instructions)
4990140010
2015

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XK12 Installation, Operating & Maintenance Manual
1 Health & Safety
Health & Safety Issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 General
2.1 Product general description .........................................4
2.2 Drive options ......................................................................4
2.3 Available packages. .. ....... .. .. .. .. .. .. ..... .. .. .. .. .. .. ....... .. .. .. .. .. .. . 5
2.4 Dimensions, performance data,
and operating environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Installation
3.1 General mounting considerations. ..... ..... .. ..... .. ..... .. ... 7
3.2 Lifting ....................................................................................7
3.3 Mounting .............................................................................8
3.4 Lubrication...........................................................................9
3.5 PTO and prop. shaft drive alignment.. .. .. . .. .. ... .. .. ... . 10
3.6 Pipe work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.7 Commissioning lter..................................................... 12
3.8 Ancillaries.......................................................................... 13
3.9 Package 1 layout/parts................................................. 14
3.10 Package 2 layout/parts................................................. 15
4 Operating and Commissioning
4.1 Pre-commissioning check list.................................... 16
4.2 Inlet commissioning lter ........................................... 16
4.3 Monitoring probes......................................................... 16
4.4 Commissioning procedure ......................................... 17
4.5 Driver Operating Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.6 Driver Training................................................................. 20
Commissioning Test sheet .......................................... 21
5 Maintenance
5.1 Schedule............................................................................ 22
5.2 Change Gear Case Oil ................................................... 22
5.3 Valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.4 Silencers/Pipework ........................................................ 23
5.5 Air Inlet Filter - cyclonic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.6 Alternative Oils................................................................ 24
Service Maintenance sheet......................................... 25
Package 5
See appendix 1 (supplied with this package)
Contents
Chapter Page

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Health & Safety
1READ THE WHOLE MANUAL BEFORE COMMENCING
INSTALLATION.
Static electricity.
Ensure, that where required, the compressor and ancillaries are earthed
in accordance with BS5958 Part 1 1983; ‘Control of Undesirable Static
Electricity’.
Powder-air combinations are potentially explosive.
Drive line.
It is the responsibility of the installer of the equipment to ensure all rotating
and moving parts of the installation are adequately guarded to a standard
which complies with the prevailing safety legislation.
Compressor.
The compressor has internal moving parts some of which may be accessed
through the inlet and outlet apertures. Do not place any objects especially
 n gers into these apertures since personal injury could result.
Installation.
A relief valve must be tted in the outlet pipe work as close to the
compressor as possible. The valve must be positioned so as not to vent air
onto any personnel since the air discharged will be hot and can cause severe
burns.
Storage/Low use
Before the machine is installed or when it will not be used for long periods:
• Store in a dry, heated building.
• Handle with care and keep the suction and delivery ports
covered.
• Rotate the drive shaft each week, in the direction shown by the arrow on
the the cover.
Where the compressor is mounted on a vehicle and located outside, it
should be operated for at least 15 minutes each week (twice a week In damp/
cool conditions)
Fire.
The compressor includes seals made of uoroelastomer polymers which
degrade if exposed to temperatures above 300°C. If the material has been so
exposed then it must not be handled with bare hands.
Relief Valve Check
This procedure should be carried out every month to clear the valve seat and
check the valve is functional. (Ear protection is recommended)
Noise
Gardner Denver Drum Ltd’s own tests show maximum noise levels for the
XK12 should typically not exceed 94 dB(A) in the worst case
(1600rpm 2.5bar g).

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2
General
2.1 Product general description
The XK12 is a robust, medium ow, oil free, contactless, low maintenance
screw compressor designed for the contaminant free discharge of dense
bulk powder products (e.g. cement, our and lime), usually at 1.5-2.5 bar g
pressure in 3”pipework.
The machine is generally comprised of synchronised screw rotors,
combined main body/step up gearcase assembly and inlet bearing carrier.
The compact shape and size of the compressor make it ideal for mounting
inside the chassis on most vehicles to enable low cost prop. shaft driving.
A through shaft allows CW or ACW input drive rotation with mounting points
on either side of the machine to provide further exibility.
The standard compressor package consists of the following equipment:
•Basic XK12 machine and mounting kit.
•Inlet lter/kit
•Commissioning lter
•Relief valve
•Check valve and ange pack.
•Discharge (outlet) silencer - absorptive or reactive
•Torque limiting coupling
2.2 Drive options
The XK12 can be driven using the following drive systems.
Prop. shaft drive Direct from a vehicle PTO
Hydraulic drive Several drives can be oered depending on the application
Electric motor Packages on base frames
Engine drive Packages on base frames
The shape and size of
the compressor make it
particularly suitable for PTO/
prop. shaft driving inside
the vehicle chassis on most
applications.
NOTE

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XK12 Installation, Operating & Maintenance Manual
Figure1. Standard Packages (1, 2 & 5)
General
2.3 Available packages - see g 1
The following packages are available as standard:
Package 1 - Loose ancillaries with absorptive discharge silencer
Standard ancillaries supplied as separate items including the absorptive type
discharge silencer and cyclonic inlet lter/kit
Package 2 - Loose ancillaries with reactive discharge silencer
Standard ancillaries supplied as separate items including the
reactive type discharge silencer and cyclonic inlet lter/kit
Fully assembled package (5)
See appendix 1 for additional information on package 5
XK12 PACKAGE 1
Absorptive, Separate Ancillaries
XK12 PACKAGE 2
Reactive, Separate Ancillaries
XK12 PACKAGE 5
XK12 and Air Cooler Pack

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XK12 Installation, Operating & Maintenance Manual
2.4 Dimensions, Performance data & Operating
Environment
Dimensions
The dimensions of the basic XK12 are shown in gure 2 below.
Performance
The performance details and power requirements of the compressor are
shown on the product data sheet.
For additional information, the constant running torque does not exceed:
270 Nm on the standard XK12 Speed range 1000 - 1600 rpm
149 Nm on the high speed XK12 Speed range 1810 - 2896 rpm
Operating environment
The permissible/foreseen operating environment is as follows:
Ambient temperature range -40 to +50°C
Resistant to tropical rain (in operation and transit), salt and sun
Humidity level Up to 100% RH condensing
Vibration level 0 to 40 Hz; ± 40 mm amplitude tested.
Inlet depression Not to exceed 100 mbar
Orientation See g 4 page 8
Max. outlet temperature 230°C
Figure 2. Dimensions - basic machine
General
Propshaft drive start-up
conditions could be severe.
A Drum torque limiting
coupling is recommended to
protect the compressor and
drive system.
CAUTION
High speed machine is
dimensionally identical to the
standard machine.
NOTE

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3
Installation
3.1 General
When selecting the machine mounting position, the following points should
be considered:
• Access to oil ll/level and drain plugs
• Adequate clearance to allow the cooling air to circulate around the
machine
• Install away from sources of heat, e.g. vehicle exhaust air or hot pipes that
could eect the compressor temperature in any way.
• Venting relief/control valve air must be unobstructed and direct to the
atmosphere.
• Fit the relief and/or protection valve control valves as close as possible to
the XK12 discharge port.
• Venting valves must be positioned so that hot air cannot vent onto the
operator or the compressor
• Silencers should be tted as close as possible to the discharge port.
For the recommended layout of the machine and ancillaries, see gure 1.
3.2 Lifting - see g. 3
The weight of the basic compressor without ancillaries is 120 kg.
The mounting face to which the basic machine is tted should be at to
avoid distortion/stress and mounting bolts/locking nuts should be M16,
grade 8.8 or higher.
The basic compressor is supplied with an eyebolt attached for lifting. When
the machine has been installed, the eyebolt should be removed and replaced
by the blanking grommet (supplied) tted to the cover.
Any equipment used for lifting should be rated accordingly.
Figure 3. Lifting
Do not lift using other parts of
the machine.
CAUTION

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XK12 Installation, Operating & Maintenance Manual
3.3 Mounting
The XK12 should be installed vertically utilising all three mounting feet on
one side of the machine and can be driven in both rotations by using either
end of the input shaft.
Additionally, the machine has discharge anges on both sides.
The input drive rotation and air path possibilities are shown below.
Installation
Figure 4. Mounting & Drive options
An incorrect drive rotation will
damage the compressor.
CAUTION
Outlet
Alternative Outlet
Inlet
The basic XK12 compressor should be installed/mounted (using the M16
 t tings supplied in the machine mounting kit) as shown in g. 5.
All M16 Grade 8.8 mounting nuts/bolts should be applied at a torque setting
of 225Nm.
Loctite 270 should also be
applied to secure the M16
mounting studs into the XK12
feet.
NOTE
The compressor has three
mounting feet on each side
of the machine and should be
mounted using all 3 feet on
one side only.
NOTE

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XK12 Installation, Operating & Maintenance Manual
Installation
Figure 6. Oil Lubrication Components
3.4 Lubrication
The XK12 is supplied complete with oil.
When the compressor has been mounted, the oil level should be re-checked
as shown in gure 6 and topped-up with oil through, and up to, the ll/level
plug hole (approximately 1.5 litres total if necessary).
Key
1 - Fill Plug washer 2 - Fill / Level Plug 5 - Magnetic Drain Plug
3 - Plug Cap 4 - Drain Plug washer
Figure5.MountingDetails-separatea n cillarypackages
Alternative mounting channels
maybe neccesary due to other
vehicle ancillaries (e.g. fuel
tank). These should provide
comparative strength to the
con g uration shown.
NOTE No. Description
1. M16 stud (short)
2. Short Spacer
3. M16 Stud (long), Grade 8
4. Long Spacer
5. Mounting channels
6. M16 Flanged Self locking nut, Grade 8
Taper washers should be
used if mounting channels
with tapered anges are to be
used.
NOTE
NOTE

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XK12 Installation, Operating & Maintenance Manual
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Figure 7b. DIN Friction Coupling
Installation
3.5 PTO and prop. shaft drive alignment
Shaft cover
The compressor can be driven from either end of the input shaft (see section
3.3 for further details of the orienations possible).
The clockwise end of the compressor input shaft is protected with a shaft
cover. If this shaft is required, remove the cover and ret it over the unused
shaft at the opposite end of the machine.
Drive couplings
See the ‘Ancillaries’ (section 3.8-torque coupling) for recomendations on
couplings for PTO drives.
Before tting, the tapers on the machine shaft and drive coupling should be
clean and damage free to help ensure the ange ts correctly. Both tapers
should be smeared with a light oil to aid future separation.
The companion ange should be tted to the compressor shaft in line with
Figure 7b, for the DIN type coupling and Figure 7c for the SAE type coupling.
The cap screw and washer which is used to retain the coupling to the shaft,
should be tightened to a torque of 88Nm.
Flange/coupling removal should only be undertaken with the aid of a puller
type device and screw in the shaft end, as shown in Figure 7a, to avoid
damaging the ange or shaft end.
Figure 7a. Drive Flange Removal
Cap Screw (Item 5) should be
tightened to a torque of 88Nm.
NOTE

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XK12 Installation, Operating & Maintenance Manual
Equal Angle
3.5 PTO and prop. shaft drive alignment (cont.)
Drive Couplings (cont.)
Installation
Figure 7c. SAE Friction Coupling
= > ? @ A B C A @
D @ E F G @ H I E A J ? C K @ C L M
N N O P Q R S Q T U V T W X Y Q U Z [ \ ] ^ _ ` Y W a O Y b U Z a c
d N e Q U Z ] f b X S T P [ \ ] ^
g N h b i j a P
k N l a m [ n b P b Y Y a Y e a R S b U Z W Y b P e T W U f ^ U f N o p q p r o s T U Z
r N \ T R t a S u a b f V b X \ R P a v w N d p k o s T U Z
Figure 8. Drive Alignment
The combined angle in any
plane should not exceed 12°
NOTE
Cap Screw (Item 5) should be
tightened to a torque of 88Nm.
NOTE

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Installation
3.5 PTO and prop. shaft drive alignment (cont.)
Alignment - See Figure 8
The axis on majority of PTO’s is mounted at approximately 2° - 5° to the
horizontal, which reects the angle of the engine and gearbox.
The compressor should be mounted so that its drive axis is parallel to the
PTO’s drive axis.
The compressor should also be mounted so that the prop. shaft angle
between the PTO and XK12 in any plane is less than or equal to 12°.
Consideration should be given to the prop. shaft length when mounting the
machine.
The prop. shaft should be sized so that it always has sliding clearance.
It is recommended that a torque limiting device should be installed between
the compressor and PTO drive anges to protect the drive line against all
eventualities. Torque limiting couplings are supplied as standard.
3.6 Pipe Work
Figures 10a and 10b show a breakdown of packages 1 and 2.
Flexible pipe is provided in the inlet induction kit with both packages.
Where any pipe work is to be fabricated using slip-on-weld anges, such
as on the inlet in Fig 9, the following points should be followed to prevent
damage to the machine and contamination of the discharged product.
• All inlet pipe work must be stainless steel or thick wall aluminium to
help prevent corroded particles entering the machine and reduce
noise emissions.
• Outlet pipe work can fabricated from any material (including mild
steel) to suit the application.
• All fabricated pipe work, should be de-scaled/cleaned before
commissioning the compressor.
• Pipe work should be attached to the vehicle chassis using exible
mountings to prevent unnecessary vibration and noise transfer.
• A exible element is recommended in the discharge pipe work (and
inlet pipe work when necessary) to prevent distortion of the XK12
from the fabricated pipe work through chassis movement and heat
expansion.
3.7 Commissioning Filter
The compressor is supplied with a commissioning lter tted to the inlet
port to prevent debris entering the machine during the installation and initial
commissioning processes.
Also check the prop shaft
manufacturers information.
NOTE
After the initial 15 minute
commissioning run (at
1000rpm, 1810 rpm high
speed), the lter must be
replaced with the standard
inlet ange gasket.
Prolonged or higher speed
operation with the lter tted
will result in machine failure.
Tighten item 1 g. 9 to a
torque of 50 Nm. See above.
NOTE
Figure 9. Inlet Flange
The compound prop.shaft
angle must also be less than
12°.
NOTE
CAUTION

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Installation
3.8 Ancillaries (relating to gures 10a - 10b)
Inlet Air Filter and Flexible Induction Kit
Should be located so that the inlet air is cool and clean. Do not mount close to exhausts or
other warm air sources. Ensure screw-on cus are sealed onto inlet hose using suitable high-
temperature silicone sealant, such as DOW CORNING Silicone AP.
Relief Valve
The relief valve is installed to prevent the XK12 from encountering pressures beyond its
operating range.
The relief valve should be installed as close as possible to the discharge port of the machine
prior to any other discharge ancillary and should be mounted vertically (as shown in g 10 ).
It is pre-set, wired and leaded (tamper proof) and tted to protect the XK12 (rather than the
system which should be protected by the vehicle tank relief valve) against pressures of over
2.5bar g . Adjustment of the machine relief valve will invalidate the XK12 and relief valve
warranty.
Discharge Silencer
Should be mounted/connected as close as possible to the discharge port (after the relief valve)
utilising the slip-on-weld anges supplied.
Silencers should be mounted/supported separately to prevent the generation of loads on
the machine and discharge port due to weight or temperature expansion. Flexibility in the
mounting or connecting pipe work to the silencer should be incorporated where this could
occur.
Check (non-return) valve
This is to prevent a back-ow of air and product (often encountered when stopping
compressors whilst the discharge tank is still pressurised) from entering and damaging the
XK12.
The check valve should be the last ancillary on the discharge pipework (but before any regular
disconnection point) to protect all the other ancillaries. It is often mounted directly to the
delivery port of the discharge silencer.
If the check valve has to be mounted horizontally on the silencer or separately, the check valve
hinge should be positioned at the top in horizontal pipe work to encourage closure under
gravity. If mounted vertically, the position of the check valve hinge is not important.
Torque Coupling
We recommend and supply a torque-limiting device for tting to the compressor when direct
PTO driving.
This is to protect all the drive-line equipment against the possibility of high torque during
operation for any circumstances.
Expansion Joints
Any pipe work or equipment should incorporate  e xible elements where:
•Movement due to thermal expansion is likely
•Pipe work crosses the vehicle chassis.
Ball Valve
A 1“ - 1.5” manual ball valve must be tted on the discharge side of the machine between the
compressor discharge port and the check valve.
This allows the compressor discharge air to vent to atmosphere to prevent the machine being
started against a pressurised tank.
Comissioning Filter
See section 3.7
Fig 10. Relief valve orientation

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XK12 Installation, Operating & Maintenance Manual
Installation
Figure 10a Absorptive, separate ancillaries.
OPTION B
OPTION A
Installation
3.9 Package 1 - Separate ancillaries with
absorptive discharge silencer
Compressors should never
be started against pressurised
discharge lines or tanks.
CAUTION
** - Indicates locally supplied item.
*- Indicates customer supplied pipework.
Ref. No. Description
1 XK-12 Basic M/C (or high speed unit)
2 10” Cyclonic Inlet Filter
3 3.75” Hose Clip
4 Hose Adaptor (Cu )-Nitrile
5 Ducting -2m x 89mm Bore
6 Inlet Flange - XK-12
7 Inlet gasket
8 Commissioning Filter XK-12 / XK-18
9 Gasket - Outlet Port
10 Outlet Blanking Flange
Ref. No. Description
11 Outlet Flange (S0W) - 77mm Bore
12 Relief valve - 1.25”, 2.5barg
13 Flange TW1 (S0W) - 80mm Bore
14 Gasket, 90mm NB, TWI
15 2” Absorptive Discharge Silencer
16 Check Valve Kit (3” BSP Outlet)
17 Shear Coupling (K1310/DIN100)
18 Friction Coupling (K1310/DIN100)
19 Storz Coupling - 3” BSP

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XK12 Installation, Operating & Maintenance Manual
Installation
Figure 10b Reactive, separate ancillaries.
3.10 Package 2 - Separate ancillaries with reactive
discharge silencer
Compressors should never
be started against pressurised
discharge lines or tanks.
CAUTION
Ref. No. Description
1 XK-12 Basic M/C - (or high speed unit)
2 10” Cyclonic Inlet Filter
3 3.75” Hose Clip
4 Hose Adaptor (Cu )- Nitrile
5 Ducting -2m x 89mm Bore
6 Inlet Flange - XK-12
7 Inlet gasket
8 Commissioning Filter XK-12 / XK-18
9 Gasket - Outlet Port
10 Outlet Blanking Flange
Ref.No.Description
11 Outlet Flange (S0W) - 70mm Bore
12 Relief valve - 1.25”, 2.5barg
13 Flange TW1 (S0W) - 80/90mm Bore
14 Gasket, 90mm NB, TWI
15 Manifold Gasket
16 ‘Drum’ Reactive Silencer Assembly
17 Check Valve Kit (3” BSP Outlet)
18 Friction Coupling (K1310/DIN100)
19 Shear Coupling (K1310/DIN100)
20 Storz Coupling - 3” BSP
** - Indicates locally supplied item.
*- Indicates customer supplied pipework.

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4
Commissioning
4.1 Pre-commissioning check list.
Figure 11. Commissioning Tappings
4.2 Inlet commissioning lter.
Should have been in place throughout the installation of the XK12 and its
pipework.
The lter should be removed during commissioning after 15 minutes
operation at 1000 rpm (or 1810 rpm for high speed machine).
4.3 Monitoring probes.
Two 1/4” BSP blanking plugs are tted in each of the inlet port ange and
unused outlet port blanking ange.
These should be removed and replaced with a temperature probe and a
pressure probe for commissioning only. (see Fig. 11)
If Gardner Denver Drum supplied anges are not used, the installer must
provide 2 x 1/4”BSP tappings adjacent to the inlet and outlet ports for the
commissioning test probes.
Failure to remove the
comissioning lter during
commissioning may lead to
failure of the compressor.
CAUTION
Lubrication plugs tted.
Gearbox lled with oil.
Pipe bores etc cleaned after fabrication.
Commissioning lter in position.
All  a nges, fasteners and mountings secure.
Vehicle PTO disengaged.
Engine management system set-up correctly for the application.
Commissioning temperature and pressure probes tted (see g. 12)
Blow (ball) valve open (if starting against a tank pressure).
Commissioning 2.5”-3” gate valve and silencer tted.
Ancillaries correctly tted and sequenced.
Tick when completed

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XK12 Installation, Operating & Maintenance Manual
4.4 Commissioning Procedure
All procedures and temperature readings should be taken via the 4 probes
 t ted in the XK12 inlet and outlet anges.
Commissioning
Watch out for hot-pipes and
make sure you replace/re-
tighten any fastenings.
NOTE
If the outlet temperature
exceeds 230°C or the
dierence between inlet
temperature and outlet
temperature exceeds 200°C,
whichever occurs rst stop the
test immediately and contact
the Gardner Denver Drum
Representative.
Max. Inlet Depression
100mbar under all
circumstances. 70mbar with
the commissioning lter
removed.
Max. Discharge Pressure
2.5 bar g
CAUTION
On completion of the installation and driver training, complete the
commissioning chart, sign, date and retain for future reference.
We also recommend photographing the installation and retaining with the
commissioning chart.
1 Check that the discharge gate valve on the pipe work is
open.
2Start the engine, depress the clutch and allow the vehicle
gearbox parts to stop rotating (5 seconds should be sucient).
Engage the PTO and slowly raise the clutch, then set the engine
speed to give a PTO output of 1000 rpm.
3 Whilst the compressor is operating, check the pipe work for
leaks and gently agitate the inlet to release any debris that may
be present.
4 After 15 minutes, depress the clutch, and engage the PTO.
5 Check the oil/ll level and drain plugs for leaks, and replace the
commissioning lter with the inlet gasket supplied being careful
to remove any debris that could fall into the pipe bore.
6 Repeat point 2 above and set the speed to 1600rpm or the
future/working operating speed.
7 Record the inlet depression and check for induction leaks. A
maximum of 70mbar is permitted on a new machine, if it is
greater than this, check the inlet pipes and lter for potential
blockages and that the comissioning lter has been removed.
8 Raise the discharge pressure to just below 2.5 barg by adjusting
the gate valve setting. Check for system leaks. If all is well, run
the compressor for 45 minutes recording temperatures
and pressures at 10 minute intervals. Measure the inlet and
outlet pressure and temperature as well as the ambient
temperature. Re-check for oil leaks
9 Increase the pressure beyond this to operate the relief valve.
10 The relief valve should crack (begin to open/blow o) at a
pressure not exceeding 2.5 bar g and then fully open (full
bypass) at no more than 2.5bar g.
11 Slowly reduce the pressure until the relief valve re-seats (should
be before 2.2 bar g) and record this value on the
commissioning test sheet.
12 Make sure that all anges are leak free and that fastenings/
mountings are still tight.
13 Disengage the PTO, return the engine speed to tick over and
then stop the engine.
14Remove the commissioning probes and plug o the holes again.
Tick when completed

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XK12 Installation, Operating & Maintenance Manual
3
4
5
3
4
7
8
8
7
2
6
1
Commissioning
Figure 12. Commissioning Tests
No. Description
1 Pressure Manometer
2 Temperature Gauge
3 Pressure Tapping (Inlet depression)
4 Temperature Tapping (Inlet)
5 Commissioning Filter
6 Pressure Gauge
7 Pressure Tapping (Discharge)
8 Temperature Tapping (Discharge)

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XK12 Installation, Operating & Maintenance Manual
4.5 Driver Operating Instructions
The input speed should be between 1000 and 1600 rpm (1810 and 2896 rpm for high
speed machine) and the maximum pressure should not exceed 2.5 bar gauge.
Where the operator will be subjected to prolonged exposure to noise, it is
recommended that ear protection is provided.
To prevent high shaft torque and material blow-back, the XK12 should never be
started directly against a pressurised tank. Mid-delivery re-starting should only be
undertaken direct to atmosphere by tting a valve from discharge line (prior to the
check valve). When the compressor reaches operating speed, the line can be slowly
closed again to restart delivery.
Starting the compressor
• Check that the PTO is disengaged and then start the engine.
• Set the engine speed to tick over.
• Depress the clutch and allow a minimum of 5 seconds for the gears to stop
rotating.
• Engage the PTO.
• SLOWLY release the clutch.
• Check that the XK12 is producing air.
• Set the engine speed to give a compressor operating speed
between 1000 rpm and 1600 rpm as required, (1810 and 2896 rpm for high
speed machine).
Stopping the compressor
• Return the engine speed to tick over
• Disengage the PTO.
• Stop the engine.
Commissioning
To avoid risk of burns, do
not touch pipework or stand
close to ventable valves
during discharge. If there is a
risk, suitably resistant gloves/
clothing must be used.
CAUTION

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XK12 Installation, Operating & Maintenance Manual
4.6 XK12 Driver training
Driver training should be given when ever possible and should include:-
Safety
Instruct the driver regarding:
• Rotating parts
• Hot Pipework
• Safety valve
• Safety coupling
Operation
Instruct the driver regarding:
• Speed range
• Maximum operating pressure
• PTO engagement
• Unloading valve
Routine Maintenance
Instruct the driver regarding:
• Gearbox oil - topping-up and replacement
• Air lter - cleaning/replacing
• Pipe connections - checking
• Relief valve function
Commissioning