SKF PTEX User manual

EN
PTEX extruder pumps
for drums
Operating manual
PTEX

EN
Page 1
951-130-409, edition 06/2009
Extruder pumps for drums
type PTEX
Imprint
The operating manual is part of the scope of
supply of the SKF extruder pump PTEX for
centralized lubrication systems.
The manual has been edited in conformity with
applicable standards and rules for technical
documentation.
© Copyright
SKF reserves the right to make changes to
adapt to technical improvement. Reprinting or
copying even of parts of this manual requires
the permission of SKF.
Imprint

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951-130-409, edition 06/2009
Contents
Contents
Imprint ............................................................. 1
Introduction .................................................... 3
Notes on the operating manual ................... 3
Safety instructions ......................................... 4
Applications .................................................... 5
Lubricants ....................................................... 5
Delivery ........................................................... 6
Transport and Storage .................................. 6
Versions ......................................................... 7
Design ............................................................. 8
Control console ........................................ 10
Function ........................................................ 13
Installation .................................................... 14
Setup ......................................................... 14
Compressed air connection .................... 14
Lubricant outlet connection ................... 14
Electrical Connection ............................... 14
Position Reed switch (warning level) .... 15
Air solenoid valve (option) ...................... 15
Pressure switch (option) ......................... 15
Putting in place the drum ........................... 16
Removing the drum .................................... 16
Commissioning ............................................. 17
Bleeding the extruder pump PTEX ....... 17
Maintenance ................................................. 18
Faults ............................................................. 18
Placing out of Service ................................. 20
Temporary Standstill ............................... 20
Final Standstill .......................................... 20
Spare parts ................................................... 21
Technical data ............................................... 22
Service .......................................................... 23

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Introduction
The extruder pumps PTEX are remarkable in
their operational reliability and long service life.
The extruder pumps are made in conformity
with the generally recognized rules of technol-
ogy and the applicable safe working practices
and the rules for accident prevention. Still
hazards may be involved in their use, which
can lead to injury of operators or other persons
or damage to the machine or other property.
To ensure trouble-free operation and prevent
hazard, we kindly ask you to read the pre-
sent manual carefully and observe the notes
contained in it.
The present manual gives the instructions for
operating and servicing standard pumps PTEX
(†page 7). In the case of a special pump
PTEX, read carefully the technical sheet deliv-
ered with the pump with all specic technical
data).
Notes on the operating
manual
Text marked with this sign alerts to
special hazards or work that must be
performed with caution.
Keep the operating manual in a safe place so
that it is always available wherever the system
is in use.
This operating manual is a part of the system,
and it must be given to the operating company
upon sale of the system.
Introduction

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Safety instructions
Please comply with the following safety
instructions in order to prevent possible
damage and to ensure that the extruder pump
PTEX works properly.
Use the extruder pump PTEX only in techni-
cally perfect condition for its intended use. Be
aware of hazards and observe the operating
manual.
Especially errors that could affect safety must
be resolved without delay. Safety measures
corresponding to the parameters of the lubri-
cant supplied must be stipulated.
The safety mechanisms must not be damaged,
dismantled, or in any way made inoperable,
nor must they be replaced by parts which have
not been expressly approved of by SKF.
The electrical connection and all interventions
such as repairs, component replacement, etc.
may be carried out only by properly qualied
and instructed personnel.
If devices are improperly connected,
substantial material and personal
damage may be the consequence.
Repair work must only be performed after a
trained specialist has disconnected the unit
from power.
Working on an extruder pump under
electrical voltage could lead to per-
sonal injury.
The centralized lubrication system connected
to the pump may be under pressure. Before
extension work, changes, repairs etc. it must
be depressurized.
Working on systems under pressure
could lead to personal injury.
Unauthorized modications to the
pumps and the use of unauthorized
spare parts and aids are prohibited
and disqualify the warranty.
Worn-out pumps must be made inoperable
and disposed of properly.
Safety instructions

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Applications
All products from SKF may be used
only for their intended purpose
as described in this brochure and in
any instructions. If operating instructions
are supplied with the products, they must
be read and followed.
Not all lubricants are suitable for use in
centralized lubrication systems. SKF does
offer an inspection service to test customer
supplied lubricant to determine if it can be
used in a centralized system. SKF lubrica-
tion systems or their components are not
approved for use with gases, liqueed
gases, pressurized gases in solution and
uids with a vapor pressure exceeding
normal atmospheric pressure (1013 mbars)
by more than 0,5 bar at their maximum
permissible temperature.
Hazardous materials of any kind, especially
the materials classied as hazardous by
European Community Directive EC 67/548/
EEC, Article 2, Par. 2, may only be used to
ll SKF centralized lubrication systems and
components and delivered and/or distrib-
uted with the same after consulting with
and receiving written approval from SKF.
Lubricants
The extruder pumps PTEX can supply lubri-
cants with the following NLGI grades:
greases with NLGI grade 000 to grade 2•
A list of authorized viscous lubricants can be
found on the Internet at www.skf.com/lubrica-tion. The lubricants recommended correspond
in their composition to customary safety
regulations, and they are suitable for use in
centralized lubrication systems.
Whenever using other lubricants, keep in
mind that there are lubricants which, although
within the authorized limits, nevertheless are
unsuitable for centralized lubrication systems
because of their characteristics. Consult the
manufacturer of your unit.
Keep in mind that lubricants are environ-
mentally unfriendly substances and that their
transport, storage and processing require that
special safety measures be taken.
For other lubricants, please contact SKF.
The extruder pumps PTEX serve to supply
lubricant to centralized lubrication systems.
Other use or use beyond this purpose is con-
sidered unintended. SKF will not accept liability
for damages resulting from such unintended
use.
Only authorized lubricants for the
pump type may be supplied. Unsuita-
ble lubricants could lead to the pump
failing and possibly severe property damage
and personal injury.
Applications

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Delivery
Upon receiving the package please check the
items for possible damage, and ensure the
package is complete by checking the supply
papers.
Keep the packaging material until any and all
problems have been claried.
Transport and Storage
In general, the pump should be stored in a dry
and dust-free environment. It must be stored
with the base on the ground (horizontal).
The storage temperatures can be found in the
specications.
Delivery

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Tableau 1 Type keyDesignation PTEX - 25 - E - B - V01 + 924
Extruder pump for drum
Drum capacity (25, 50 ou 200 kg)
Extruder pump equipment 1)
Pneumatic pump type 2)
Follower plate index 3)
Voltage key 4)
1) S: standard equipment
E: electric option (solenoid valve and pressure switch)
2) A: pump with a max. delivery rate of 0,83 kg / mn at 6 bars (recommended for 200 kg drums)
B: pump with a max. delivery rate of 0,5 kg / mn at 6 bars (recommended for 25 and 50 kg
drums)
3) V01: follower plate with wiper seal (seal material: FPM)
N01: follower plate with wiper seal (seal material: nitrile)
4 ) +924: 24 V DC
+428: 230 V 50/60 Hz
+429: 115 V 50/60 Hz
Versions
The extruder pumps PTEX are available for
three different drums capacities (25, 50 and
200 kg). Every pump is equipped with a posi-
tion detector, type Reed switch (warning level)
to monitor the motion of the follower plate.
As electric options, a solenoid valve, to control
the general air inlet, and a pressure switch, to
monitor the lubricant outlet, are also available.
Even if the extruder pump is designed for
three different drum capacities, the inner
diameter of the drum can differ according to
the model. Therefore, SKF designs the follower
plate for every application, according to the
technical data of the drum.
How your pump is equipped is indicated on the
nameplate and delivery papers. The adjacent
table explains the type key.
If a extruder pump unit is not listed
in table 1, please refer to the deliv-
ered technical sheet to know the
specic technical data of the unit.
Versions

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Design
Figure 1 shows the essential design of the
extruder pump PTEX for 25 kg drum.
The extruder pump PTEX consists in three
main components:
support frame•
pneumatic pump•
control console (• †page 10)
The support frame is made of two vertical
cylinders linked to each other by a traverse
bar, which holds the pneumatic pump. The two
cylinder are xed on a common base, which
makes the handling of the extruder pump
easier. The drum is centered and xed on the
base with anges. For the extruder pump for
200 kg drums a safety bow prevent any risk of
accident with the drum.
The pneumatic pump sucks up lubricant
directly into the drum and delivers it to the
centralized lubrication system. The length of
the suction pipe depends on the model of the
drum. The pipe is equipped at its end with a
follower plate and a wiper seal to ensure the
tightness of the drum. The user can bleed
the drum with a rst manual bleeding valve
located above the follower plate. With a second
manual valve at the pneumatic pump outlet he
can bleed the extruder pump.
The extruder pump PTEX is equipped with
several devices to monitor the good function
and to ensure the security of the system: The
lubricant outlet pressure is monitored with a
manometer, a Reed switch (adjustable) detects
the position of the follower plate before it is
getting to the bottom of the drum (warning
level) and a safety switch interrupts the func-
tion of the pneumatic pump when the follower
plate has reached the bottom of the drum.
In addition (electric option) the extruder pump
can have two other electric devices: a solenoid
valve to control the general air inlet and a
pressure switch to monitor the lubricant outlet
pressure.
Design
Extruder pumpAir lter/lubricator (actuation of the 1.
pump)
Air inlet G 3/8"2.
Air manual control valve (or 3/2 solenoid3.
valve – electric option)4.
Air lter5.
Drum bleeding valve6.
Manometer (lubricant pressure)7.
Pneumatic pump8.
Control console (9. † page 10)
Cylinder10.
Flange (centering and fastening)11.
Pressure switch (electric option)12.
Lubricant outlet connection R 3/8"13.
Pump bleeding valve14.
Suction pipe15.
End switch (follower plate stroke)16.
Follower plate17.
Position detector, type Reed switch –18.
warning level

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Fig. 1 Extruder pump PTEX for 25 kg drum
Design
15
11
13
12
8
7
1
2
9
5
4
3
6
10
14
16
17

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Control console
Several functions are available on the control
console of the extruder pump PTEX such as to:
control the pneumatic pump function•
control the follower plate function•
control the blowing air inlet (upward motion•
of the follower plate)
regulate and monitor the air pressure to let•
the follower plate move upwards
regulate and monitor the air pressure to let•
the follower plate move downwards
regulate and monitor the blowing air pres-•
sure (upward motion of the follower plate)
regulate and monitor the air pressure for•
the actuation of the pump
Fig. 2 Control console of the extruder pump
PTEX
Design
1 2 3 4 5
6 7 8 Control consoleBlowing air control switch1.
– 2 positions (On / Off)
Blowing air pressure regulator2.
with manometer
Air pressure regulator (follower plate upward3.
motion) with manometer
Air pressure regulator (follower plate down-4.
ward motion) with manometer
Follower plate control lever5.
– 3 positions (up, stop, down)
Air inlet pressure regulator for the pneumatic6.
pump
Air inlet manometer for the pneumatic pump7.
Pump control switch – 2 positions (On / Off)8.

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Fig. 3 Extruder pump PTEX-25-S-B... Fig. 4 Extruder pump PTEX-50-S-B...
Design
630680460500
1001 040H.MAXI : 1 380 & H.MINI : 8806H.MAXI : 500
460630500
1 285H.MAXI : 1 870 & H.MINI : 1 1406
680
100H. MAXI : 730

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6986757151 0726
1061 645H.MINI : 1 490 & H.MAXI : 2 555H. MAXI : 1 065
Fig. 5 Extruder pump PTEX-200-S-A...
Design

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Function
Before using the extruder pump PTEX the
drum has to be correctly positioned on the
base of the pump according to the follower
plate. If the drum is not correctly installed, the
follower plate can not move downwards or the
drum will not be tightened.
After opening the general air inlet valve, the
user drives the cylinder of the extruder pump
from the control console. The cylinder under
pressure let the follower plate move down-
wards into the drum and press it against the
lubricant.
At this point, it is necessary to bleed rst the
drum, and then the extruder pump.
When the bleeding has been carried out, the
user starts up the pneumatic pump from the
control console. The pump sucks the lubricant
into the drum and delivers it to the connected
centralized lubrication system. The user can
monitor the operation and adjust the pump
pressure on the control console. During the
suction the lubricant level falls in the drum.
But under the effect of the cylinder pres-
sure, the follower keeps moving downwards
and stays pressed against the lubricant. The
permanent contact between the lubricant and
the follower plate optimizes the function of the
pneumatic pump.
The position Reed switch sends a signal (warn-
ing level) when the follower plate gets closer to
the bottom of the drum.
When the follower plate reaches the bottom of
the drum, a pneumatic end switch switches off
the air inlet of the cylinders and the pneumatic
pump, and thus interrupts the operation of the
pump (no air suction).
When the drum is empty the user triggers the
upward motion of the cylinders. But it also
has to switch on the blowing air. This air is
blown under the follower plate and will push it
upwards.
Function

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Electrical Connection
The system may be connected only
by properly qualied and instructed
personnel. Comply with the notes in
this operating manual.
The extruder pumps with the electric option
have two different electric devices:
a solenoid valve to control the general air•
inlet
a pressure switch to monitor the lubricant•
outlet
Installation
Setup
Before installing the extruder pump, remove
the packaging material as well as any trans-
port safety devices (e.g. sealing plug in the
open outlet).
The extruder pump must be protected from
moisture and und vibration, but on the other
hand mounted so that it is easily accessible to
ensure that all further installation work can be
carried out without difculty and that later the
drum can be easily replaced.
The extruder pump has to be installed on an
even and horizontal surface and xed with 4
xing bolts.
When drilling installation holes
always pay attention to any supply
lines or other units as well as fur-
ther sources of dangers such as moving
parts. Maintain safe distances and observe
regional installation and accident-preven-
tion regulations.
All visual indicators must be clearly visible.
Keep a sufcient clearance above the extruder
pump for the free upward motion of the fol-
lower plate cylinders.
Compressed air connection
The maximum inlet pressure speci-
ed for operating the extruder pump
must not be exceeded.
The compressed air line is connected to the
extruder pump († pos. 2 g. 1 page 9) via a
male connector G 3/8".
Lubricant outlet connection
The pump lubricant outlet is connected to the
centralized lubrication system by means of
a hose (length 2 m) tted with a male swivel
connector R 3/8".
Installation

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Position Reed switch (warning level)
Every extruder pump PTEX has a position
Reed switch. It detects the position of the
cylinder when the follower plate comes down.
It sends a signal to the user when the follower
plate comes closer to the bottom of the drum
(according to the adjustment of the user).
Fig. 6 Wiring of the position Reed switch
PVC lead + 3-pin plug-in male connector and
Ø M8
Air solenoid valve (option)
The solenoid valve is mounted at the general
air inlet of the extruder pump PTEX. It replaces
the hand operated valve. With the solenoid
valve, the user can control at distance the gen-
eral air inlet. This is a 3/2 way solenoid valve.
Fig. 7 Wiring of the air solenoid valve
Pressure switch (option)
The pressure switch is mounted at the pump
lubricant outlet. It supplements the lubricant
manometer a sends a signal when the minimal
lubricant pressure has been reached.
Fig. 8 Wiring of the pressure switch
Installation

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Putting in place the drum
Put the control lever on ‘STOP’•
Put the control switches of the pump and•
the blowing air on ‘OFF’
Put the control lever on ‘up’ (• ) and open
the general air inlet valve until the follower
plate reaches it maximal high level
Put the control lever on ‘STOP’•
Lubricate the wiper seal with a lubricant,•
which is compatible with the product in the
drum
Position the drum according to the follower•
plate. Remove the cover of the drum
If the drum is bashed in, there is no
guarantee for the tightness. There-
fore bashed-in drums shall not be
used.
Drums shall be as cylindrical as
possible and shall not have ared
ange.
Put the control lever on ‘down’ (• ), until
the follower plate reaches the top of the
drum
Put the control lever on ‘STOP’•
Adjust the position of the drum if necessary•
and fasten it with the anges on the base
Open the manual bleeding valve which is•
above the follower plate
Put the control lever on ‘down’ (• ), until
the air is entirely blown away and bubble-
free lubricant comes out of the bleeding valve
Put the control lever on ‘STOP’ and close•
the bleeding valve.
Removing the drum
Stop the function of the pneumatic pump•
(switch on OFF)
Put the control lever on ‘STOP’•
If the follower plate has reached the
minimal level in the drum, the func-
tion of the cylinder is then already
interrupted. Nevertheless the previous
instructions have to be carried out.
Open the air blowing valve (switch on ON)•
Put the control lever on ‘up’ (• )
When the follower plate has reached its•
maximal high level, close the air blowing
valve (switch on OFF) and put the control
lever on ‘STOP’
Remove the drum from the extruder pump•
Clean the follower plate and the wiper seal•
Drum installation

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Commissioning
Ensure that the pump and all its connections
are rmly in place before the rst operation.
Check that the follower plate is correctly posi-
tioned in the drum.
Only lubricants suited to the pump
type may be supplied. Unsuitable
lubricants could lead to the pump
failing and possibly severe property damage
and personal injury.
Open the general air inlet valve•
Put the control lever on ‘down’ (• )
Start the pump and regulate the pressure•
in order to get the optimal lubricant pressure.
Bleeding the extruder pump PTEX
Before bleeding, check that the follower plate is
correctly positioned in the drum.
Open the general air inlet valve•
Put the lever on ‘down’• ( )
Bleeding of the drum
Open the manual bleeding valve, which is•
on the above the follower plate
Let the pump run until the follower plate•
lays on the lubricant and bubble-free lubri-
cant comes out* and the close the bleeding
valve
Open the manual bleeding valve of the•
pneumatic pump
Bleeding of the pump
Start the pneumatic pump•
Let the pump run until bubble-free lubri-•
cant is coming out and the close the bleeding
valve
Stop the pneumatic pump•
Put the control lever on ‘STOP’.•
The extruder pump PTEX is now ready to run.
*) According to the viscosity, it is possible that no lubricant comes out.Commissioning

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Maintenance
Maintenance work may be carried
out only by qualied and trained
specialists instructed to do so.
Maintenance work may be carried
out only after a trained specialist has
disconnected the extruder pump
from power. Working on systems under
electrical voltage could lead to personal
injury.
The extruder pump unit may be sub-
jected to pressure. Before extension
work, changes, repairs etc. it must be
depressurized.
The extruder pump PTEX units are for the
most part maintenance free. To ensure they
work properly, however, please regularly check
the following:
Check the pump regularly for external dam-•
age or leaks.
All electrical connections and lines must be•
checked regularly for damage and to ensure
that they are rmly in place.
Any faults found must be properly rectied •
before the extruder pump is activated again.
Faults
All interventions such as repairs,
component replacement, etc. may be
carried out only by properly qualied
and instructed personnel.
Repair work may be carried out only
after a trained specialist has discon-
nected the unit from power. Working
on systems under electrical voltage could
lead to personal injury.
The extruder pump may be subjected
to pressure. Before extension work,
changes, repairs etc. it must be
depressurized.
Table 2 contains an overview of problems
which you can remedy yourself. You should
contact the SKF service center if the problem
can not be rectied by taking the measures
described here.
Maintenance