Alfapascal K25 User manual

1
Table of Contents
1 Purpose.............................................................................................. 2
2 Technical Characteristics .................................................................. 2
3 Scope of supply (in pieces) ................................................................ 2
4 Instrument Design and Principle of Operation ................................. 3
5 Safety Precautions............................................................................. 4
6 Preparation for Operation ................................................................. 6
7 Operation Procedure ......................................................................... 6
8 Maintenance...................................................................................... 7
9 Storage .............................................................................................. 7
10 Troubleshooting ................................................................................ 8
11 Warranty Obligations ........................................................................ 8
12 Claim Details ..................................................................................... 8
13 Acceptance Certicate ....................................................................... 9
14 Packing Certicate ............................................................................ 9

2
1 Purpose
1.1 The compressor K-25 is designed to generate compressed air (with a
pressure of 2.5 MPa) and to be used as a part of an Automated Pneumatic
Calibrating System (PSKA).
1.2 Depending on its technical capabilities, it can be used with other
laboratory equipment.
1.3 The compressor is designed for operation in laboratory conditions at
the ambient air temperature of 10 to 30°C and maximum relative humidity
of 80% or lower.
1.4 The K-25 consists of a low-pressure compressor (the operating
pressure up to 0.7 MPa) from a third-party manufacturer and a 2.5 MPa
booster unit made by “Alfapascal” LLC.
1.6 Technical characteristics and functioning of a specic low-pressure
compressor are reviewed in a separate manual for this compressor.
2 Technical Characteristics
Operating pressure....................................... 0…2,5 MPa
Maximum outlet pressure ............................... 0…2,5 MPa
Maximum inlet pressure ................................. 0,65 MPa
Pressure increase factor ................................. 4
Auxiliary air consumption ............................... 120 %
Operating temperature .................................. +2... 50 °C
Receiver volume.......................................... 58 cm3
Connecting thread ....................................... G¼
Overall dimensions (L×W×H), no more than ............ 680×390×550 mm
Device weight, no more than ............................ 40 kg1
3 Scope of supply (in pieces)
Compressor K-25..........................................................1
1It depends on the low-pressure compressor and may change (these parameters
correspond to the BAMBI BB24D compressor).
Attention
1.5 This Manual is developed on the basis of a low-pressure
compressor K-9 made by “Alfapascal” LLC (discontinued), which is
why designations in Figures and some operations with it may be
different from the specic specimen.

3
Operation manual, data sheet2...........................................1
Operation manual, data sheet3...........................................1
4 Instrument Design and Principle of Operation
4.1 The panel’s appearance is shown in Fig. 1.
Fig. 1. Compressor K-25:
1—compressor unit; 2—platform; 3—receiver; 4—rear xed wheels;
5—front rotating wheels; 6—condensate drain plug;
7—oil level monitoring window; 8—air lter; 9—pressure switch;
10—lter/regulator; 11—receiver pressure manometer;
12—outlet pressure manometer; 13—pressure safety valve;
14—outlet valve; 15—lter/regulator valve; 16—handle;
17—compressor outlet; 18—compressor start handle;
19—connecting tubes; 20—tting; 21—booster unit; 22—manometer;
23—compressor outlet; 24—plug of condensate drain from the booster unit;
25—connecting hose
4.2 The compressor K-25 consists of two portions: a main unit
(compressor K9) and a booster unit.
4.3 Basic parts of the compressor are installed on platform 2 (Fig. 1),
which is fastened with clamps 20 on receiver 3. Rear xed wheels 4 and
2For the compressor K-25.
3For the low-pressure compressor.
2
7
1
20
131191810
12
14
17
16
15
19
25
23
24 22
21
8
5 4
3
6

4
front rotating wheels 5 are fastened on supports 21, which are welded to
the bottom of clamps 20. The 4-wheel structure facilitates compressor
movement within the room. Compressor units 1 are fastened on the
platform with vibration dampening rubber bushes and are equipped
with oil level monitoring window 7 and air lters 8. To ensure automatic
operation of the compressor, there is pressure switch 9, which is set to
switching-off if the pressure increases to 0.9 MPa and to switching-
on if the pressure decreases to 7 bar. The on and off pressure can be
monitored with manometer 11. In order to maintain the pressure on
the same level, there is lter/regulator 10, which can be used to regulate
the outlet pressure between 0 and 0.7 MPa. The outlet pressure can be
monitored with manometer 12. At the lter/regulator bottom, there is
automatic valve 15, which closes when the pressure appears and opens
when the compressor turns off and when the pressure drops, to release
the condensate accumulated. In order to prevent an emergency, there is
emergency valve 13.
At the compressor outlet, there are ball valve 14 and a tting (or G¼
thread) for connecting 17. At the receiver bottom, there is plug 6 to drain
the condensate. Handle 16 is fastened on the platform to allow easy
movement of the compressor. All connections are made with plastic tubes
19 and cap-nut ttings. Threaded connections are sealed with special
gaskets or anaerobic sealant.
In order to increase the pressure to 2.5 MPa, booster unit 21 is fastened
on the platform; the booster unit has manometer 22 indicating the outlet
pressure, outlet tting 23, and condensate drain plug 24. Connecting hose
25 connects the main unit with the booster unit.
5 Safety Precautions
5.1 Before starting the compressor, thoroughly inspect it and make sure
that there are no mechanical damages and that its elements are securely
fastened.
Attention
This Section aims to ensure personnel safety during operation as
well as integrity of the compressor and equipment running together
with this compressor.

5
Attention
5.2 The compressor must not be used with faulty electric wires or a
faulty plug.
5.3 The compressor shall be connected only to a power outlet that
has the third, earthing contact.
5.4 In order to avoid an electric shock hazard, connect the compressor
via a residual current device (RCD) designed for the operating current of
16A and the breaking current of 10 or 30 mA.
5.6 In case of continued operation, do not touch compressor units so
that to avoid thermal burns as the units can be heated as high as 80°C.
5.10 Should any abnormal sounds or odours appear, the compressor
shall be immediately shut down and disconnected from the power grid;
contact specialists.
5.11 Periodically drain condensate from the receiver, lter/regulator, and
booster unit.
5.12 The compressor shall be repaired by specially trained personnel.
The compressor must not be repaired by your own efforts within the
warranty period!
5.13 The compressor must not be tilted in order to prevent breakdowns
of compressor units.
Attention
5.5 Do not exceed the duty cycle above the one specified in
technical characteristics in order to avoid overheating and failures
of compressor units.
Attention
5.7 Inspect the oil level in compressor units at all times (in the off
state); rell oil, if necessary (when the compressor turns on, the oil
level drops by 2–3 mm).
5.8 It is prohibited to eliminate any compressor issues if it is
connected to the power grid — regardless of its being turned on or
off — or under pressure.
5.9 The running compressor must not be left unattended.

6
Attention
5.14 The compressor must not be turned on manually if the pressure
in the receiver exceeds 0.7MPa (the pressure shall be preliminarily
reduced).
5.15 Disconnection/connection from/to the compressor shall be made
when there is no pressure.
6 Preparation for Operation
6.1 Unpack the compressor and wipe it with clean cloth.
6.2 Make sure that there are no mechanical damages; check fastening
reliability for compressor elements and integrity of electric wires and
the plug.
6.3 Check the oil level in compressor units; rell, if required; to do so,
6.4 After making sure that switch 18 (Fig.1) is off, connect the
compressor to the 220 V, 50 Hz AC mains having an earthing contact.
7 Operation Procedure
7.1 The compressor can operate in two ranges: 0...0.7 MPa and 0... 2.5 MPa.
7.2 Operation in the range of 0...0.7 MPa.
7.2.1 Close valve 14 (Fig. 1).
7.2.2 Disconnect hose 25 from tting 17.
7.2.3 Connect the PSKA system panel or other equipment to tting 17.
7.2.4 Power on the compressor with switch 18.
7.2.5 Adjust the outlet pressure with lter/reducer 10.
7.2.6 Supply the pressure to the PSKA panel or other equipment by
opening valve 14.
7.2.7 During operation, monitor the compressor on and off thresholds;
if necessary, adjust them according to Fig. 2 while observing para. 5.6.
7.3 Operation in the range of 0... 2.5 MPa.
Attention
5.16 It is prohibited to generate a pressure at the booster outlet above 2.5 MPa.
5.17 The booster must not be operated with its housing open.
5.18 Be careful when operating the compressor as compressed air is
a source of potential hazard.

7
7.3.1 Close valve 14 (Fig. 1).
7.3.2 Connect compressor tting 17 to the booster unit’s inlet using hose
25, as shown in Fig. 1.
7.3.3 Connect the PSKA system panel or other equipment to tting 23.
7.3.4 Power on the compressor with switch 18.
7.3.5 Adjust the compressor outlet pressure (booster unit’s inlet pressure,
manometer 12) with lter/reducer 10 considering the fact that the booster
would increase the pressure 4 times.
7.3.6 Open valve 14.
7.3.7 We recommend that the pressure is set first according to
manometer 12 a little lower than the required value, with subsequent ne
adjustment during operation according to manometer 22. Avoid exceeding
the maximum outlet pressure equal to 2.5 MPa.
7.4 In case of short-term downtimes, it is enough to close valve 14
(Fig.1) and to bleed the air from the supply hose using the PSKA panel or
other equipment connected. To resume operation, it is enough to open
valve 14.
7.5 In case of long-term downtimes or upon completion of the work,
the air shall be bled from the compressor using the PSKA panel or other
equipment connected; the air hose shall be disconnected; the equipment
shall be disconnected from the mains.
8 Maintenance
8.1 In order to keep the compressor in the good working order, daily and
routine maintenance is required.
8.2 Daily maintenance shall include visual inspection, removal of dirt
and dust with dry clean cloth, and check of the oil level in compressor
units. If the oil amount is insufcient, rell it according to para. 6.3.
8.3 Routine maintenance shall include works under para. 8.2 plus
condensate drainage from the filter/regulator, from receiver 3 by
unscrewing plug 6, and from the booster unit’s receiver by unscrewing
plug 24. Make sure that air lters are clean by purging them; if they are
dirty, wash them or replace with new ones.
9 Storage
9.1 Compressor storage in laboratory conditions. When storing the
compressor in laboratory conditions, wipe it with clean cloth and cover
it with a polyethylene cap.

8
9.2 Compressor storage in a storage room. Before putting the
compressor into storage, perform works according to para. 8.3 and pack
it in the original package (or a similar one). The compressor shall be
stored in a dry heated room at an air temperature no lower than +5°C
and relative humidity no higher than 80%.
10 Troubleshooting
Malfunction Cause of the malfunction Repair method
The compressor
won’t switch on
Mains voltage failure Check the voltage
The compressor’s electric
equipment is faulty
Contact a specialist
The compressor off
and on pressure
does not correspond
tothespecied one
The pressure switch
is set incorrectly
Adjust the pressure
switch’s trigger thresholds
The pressure switch
is faulty
Contact a specialist
The pressure drops
with valve 14
switchedoff (Fig. 1)
Leak-tightness
ofconnections is lost
Identify the place of
leakage with soapy water
and eliminate the leak
The pressure
is higher than
therequired one
High air consumption Bring the consumption
into accordance with
technical characteristics
Leak-tightness
ofconnections is lost
Contact a specialist
11 Warranty Obligations
11.1 The Manufacturer guarantees compressor operation, provided that
the operating, storage, and transportation conditions are met.
11.2 The warranty service life is 18 months.
11.3 The warranty storage life is 6 months.
11.4 The average service life is at least 8 years.
12 Claim Details
12.1 In case of a failure, prepare a certicate of required repair and submit it
to the following address: “Alfapascal” LLC, 36, 2nd Paveletskaya, Chelyabinsk,
454047, Russia, phone: [phone], e-mail: [email protected]

9
13 Acceptance Certicate
The compressor K-25 Serial Number _________ complies with specication
TU 3643-011-91357274-2013 and is deemed to be suitable for operation.
Date of issue
Responsible person
Signature Surname
LS
14 Packing Certicate
The compressor K-25 Serial Number _______ was packed by “Alfapascal” LLC
in compliance with specication TU 3643-011-91357274-2013.
Date of packing
Responsible person
Signature Surname
LS
Note
The Manufacturer reserves the right to make changes to the
compressor design that do not affect basic technical characteristics,
without prior notice.