GEA HG12P User manual

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engineering for a better world GEA Refrigeration Technologies
GEA Bock Compressor HG12P
Assembly instructions
HG12P/75-4 HG12P/60-4 S HGX12P/75-4 HGX12P/60-4 S
HG12P/90-4 HG12P/75-4 S HGX12P/90-4 HGX12P/75-4 S
HG12P/110-4 HG12P/90-4 S HGX12P/110-4 HGX12P/90-4 S
HG12P/110-4 S HGX12P/110-4 S

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About these instructions
Read these instructions before assembly and before using the compressor. This will avoid misunder-
standings and prevent damage. Improper assembly and use of the compressor can result in serious
or fatal injury.
Observe the safety instructions contained in these instructions.
These instructions must be passed onto the end customer along with the unit in which the compres-
sor is installed.
GEA Bock GmbH
72636 Frickenhausen
GEA Bock GmbH
Benzstraße 7
72636 Frickenhausen
Germany
Telephone [phone]
Fax [phone]
[email protected]
www.gea.com
Manufacturer
Contact

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Contents Page
1 Safety 4
 1.1 Identicationofsafetyinstructions
 1.2 Qualicationsrequiredofpersonnel
1.3 General safety instructions
1.4 Intended use
2 Product description 6
2.1 Short description
2.2 Name plate
2.3 Type key
3 Areas of application 8
3.1 Refrigerants
3.2 Oil charge
3.3 Limits of application
4Compressor assembly 10
4.1 Storage and transport
4.2 Setting up
4.3 Pipe connections
4.4 Pipes
4.5 Laying suction and pressure lines
4.6 Operating the shut-off valves
4.7 Operating mode of the lockable service connections
5 Electrical connection 13
5.1 Information for contactor and motor contactor selection
5.2 Connection of the driving motor
5.3 Circuit diagram for direct start 230 V Δ/ 400 V Y
5.4 Electronic trigger unit MP 10
5.5 Connection of the electronic trigger unit MP 10
5.6 Functional test of the electronic trigger unit MP 10
6 Commissioning 18
6.1 Preparations for start-up
6.2 Pressure strength test
6.3 Leak test
6.4 Evacuation
6.5 Refrigerant charge
6.6 Start-up
6.7 Avoiding slugging
6.8 Connection of oil level regulator
7 Maintenance 20
7.1 Preparation
7.2 Work to be carried out
7.3 Spare parts recommendation
7.4 Accessories
7.5 Extract from the lubricants table
7.6 Decommissioning
8 Technical data 22
9 Dimensions and connections 23
10 Declaration of conformity and installation 24
11 Service 25

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1|Safety
1.2 Qualicationsrequiredofpersonnel
1.3 General safety instructions
WARNING! Inadequately qualied personnel poses the risk of accidents, the
consequence being serious or fatal injury. Work on compressors
mustthereforeonlybeperformedbypersonnelwiththequalica-
tions listed below:
• For example, a refrigeration technician, refrigeration mechatron-
ics engineer. As well as professions with comparable training, which
enable personnel to assemble, install, maintain and repair refrigeration
and air-conditioning systems. Personnel must be capable of assessing
thework to be carried out and recognising any potential dangers.
WARNING! • Refrigerating compressors are pressurised machines and
thereforerequireparticularcautionandcareinhandling.
• Risk of burns! Depending on the operating conditions, surface
temperatures of over 60 °C on the pressure side or below 0 °C on
the suction side can be reached.
• The maximum permissible overpressure must not be exceeded,
even for testing purposes.
1.1 Identicationofsafetyinstructions:
DANGER! Indicatesadangeroussituationwhich,ifnot
 avoided,willcauseimmediatefatalorseriousinjury.
WARNING!
 Indicatesadangeroussituationwhich,ifnot
 avoided,maycausefatalorseriousinjury.
CAUTION!
 Indicatesadangeroussituationwhich,ifnot
 avoided,maycausefairlysevereorminorinjury.
ATTENTION! Indicatesasituationwhich,ifnot
 avoided,maycausepropertydamage.
INFO! Importantinformationortipsonsimplifyingwork.

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1|Safety
These assembly instructions describe the standard version of the HG12P manufactured by GEA
Bock. The compressor is intended for use in refrigeration systems in compliance with the limits of
application.Onlytherefrigerantspeciedintheseinstructionsmaybeused.
Any other use of the compressor is prohibited!
The GEA Bock refrigerating compressor named in the title is intended for installing in a machine
(within the EU according to the EU Directives 2006/42/EC Machinery Directive, 97/23/EC Pressure
EquipmentDirectiveand2006/95/EC–LowVoltageDirective).
Commissioning is only permissible if the compressor has been installed in accordance with these
assembly instructions and the entire system into which it is integrated has been inspected and
approved in accordance with legal regulations.
1.4 Intended use
WARNING! The compressor may not be used in potentially
explosive environments!

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2|Product description
• Semi-hermetic two-cylinder reciprocating compressor with oil pump lubrication.
• Suction gas cooled drive motor.
2.1 Short description
Fig. 1
Fig. 2
Oil sight glass
Valve plate
Cylinder cover
Discharge
shut-off valve
Oil pump
Terminal box
Suction
shut-off valve
Drive section
Motor section
Dimension and connection values can be found in Chapter 9
Transport eyelet
Name plate

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2|Product description
2.2 Name plate (example)
1 Typedesignation 6 Voltage,circuit,frequency
2 Machine number 7 Nominal rotation speed
3 maximum operating current 8 Displacement
4 Startingcurrent(rotorblocked) 9 Voltage,circuit,frequency
5 ND(LP):max.admissibleoperating 10 Nominalrotationspeed
pressure (g)Low pressure side 11 Displacement
 HD(HP): max. admissible operating  12 Oiltypelledatthefactory
pressur e(g)High pressure side 13 Terminal box protection type
Observe the limits of application Electrical accessories can change
diagrams! the IP protection class!
50 Hz
}
60 Hz
}
/
HG 21 P 110- 4 SX
2.3 Typekey (example)
¹)HG-HermeticGas-cooled(suctiongas-cooled)forthenormal-/airconditioningapplications
²)X
-Esteroilcharge(HFCrefrigerant,e.g.R134a,R404A/R507,R407C)
³) Additional declaration for Pluscom compressors
4)S - More powerful motor, e.g. for air-conditioning applications
Motor variant 4)
Number of poles
Swept volume
³)
Numbers of cylinders
Size
Oil charge ²)
Series ¹)
Typschild (Beispiel)
1
2
3
4
513
12
7
11
6
10
8
9
1 Typbezeichnung
2 Maschinennummer
3 maximaler Betriebsstrom
4 Anlaufstrom (Rotor blockiert)
5 ND (LP): max. zulässiger Stillstandsdruck
Saugseite
HD (HP): max. zulässiger Betriebsdruck
Hochdruckseite
Einsatzgrenzendiagramme beachten!
50 Hz
60 Hz
6 Spannung, Schaltung, Frequenz
7 Nenndrehzahl
8 Hubvolumen
9 Spannung, Schaltung, Frequenz
10 Nenndrehzahl
11 Hubvolumen
12 Werkseitig eingefüllte Ölsorte
13 Schutzart Klemmenkasten
10,6/6,1A
45A 26A
9,4
11,3
HGX12P/110-4S
AS35830A001
SE 55
AS35830A001
GEA Bock GmbH
72636 Frickenhausen, Germany
1
2
3
4
5
6
7
8
9
10
12
13
11
Fig. 3

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3|Areas of application
ATTENTION! Compressor operation is possible within the operating limits
shown in the diagrams. Please note the signicance
of the shaded areas. Thresholds should not be selected as design
or continuous operation points.
- Permissible ambient temperature (-20°C) - (+60°C)
- Max. permissible discharge end temperature 140 °C
    -Max.permissibleswitchingfrequency8x/h.
- A minimum running time of 3 min. steady-state condition
(continuous operation) must be achieved.
For operation with additional cooling:
- Use only oils that are highly thermally stable.
- Avoid continuous operation near the limits.
Foroperationwithfrequencyconverter:
- The maximum current and power consumption must not be
exceeded.Inthecaseof operationabovethe mainsfrequency,
the application limit can therefore be limited.
When operating in the vacuum range, there is a danger of air
enteringonthesuctionside.Thiscancausechemicalreactions,
a pressure rise in the condenser and an elevated compressed-gas
temperature. Prevent the ingress of air at all costs!
 Thecompressorsarelledatthefactorywiththefollowingoiltype:
- for R134a, R404A/R507, R407C FUCHS Reniso Triton SE 55
- for R22 FUCHS Reniso SP 46
Compressorswithesteroilcharge(FUCHSRenisoTritonSE55)aremarkedwithanXinthetype
designation (e.g. HGX12P/110-4).
3.1 Refrigerants
• HFKW/HFC:  R134a, R404A/R507, R407C
• (H)FCKW/(H)CFC: R22
3.2 Oil charge
3.3 Limits of application
INFO! Forrefilling,werecommendtheaboveoiltypes.
Alternatives: seelubricantstable,Chapter7.5.
The oil level must be in the
visible part of the sight
glass; damage to the com-
pressor is possible if over-
filled or underfilled!
ATTENTION!max.
min.
0,5 Ltr.
oil level
Fig. 4
~
~

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Evaporationtemperature(°C)
Condensingtemperature(°C)
Suctiongassuperheat(K)
Suctiongastemperature(°C)
3|Areas of application
Design for other
areasonrequest
R134a
R407C
R404A/R507
R22
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Unlimited application range
Supplementary cooling or
reduced suction gas temperature
Supplementary cooling and
reduced suction gas temperature
Motor version S
(morepowerfulmotor)
Max. permissible operating
pressure (LP/HP)1): 19/28 bar
1) LP = Low pressure
HP = High pressure

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4|Compressor assembly
 Setuponanevensurfaceorframewithsufcientload-
bearing capacity.
Single compressor preferably on vibration damper.
Duplex and parallel circuits always rigid.
 Provideadequateclearanceformaintenancework.
 Ensureadequatecompressorventilation.
Do not use in a corrosive, dusty, damp atmosphere or a
combustible environment.
Fig. 11
Fig. 12
Fig. 13
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B
A
1 2
3
4
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4
3
2
1
A
B
Tol.-Ang. DIN ISO 2768-mK
Ra Rz
Maß Passung
Freigabe
Alternativbezug:
Baumustergeprüft
Teil inaktiv
Lieferantenzeichnung
-
-
K.-Auftrag:
PL:
Zeichnung ungültig
Entwicklungsstand
Teil keine Serie
120
400
±0.5
über 0.5
bis 6
Benzstraße 7 - 72636 Frickenhausen - Germany - www.bock.de
-
-
Unbemaßte Radien:
-
Diese Zeichnung ist unser Eigentum!
Sie darf ohne unsere Genehmigung weder nach-
gebildet, vervielfältigt, oder Dritten Personen zu-
gänglich gemacht werden. Der Nachbau nach
dieser Zeichnung, oder an Hand der nach dieser
Zeichnung hergestellten Gegenstände durch den
Abnehmer oder Dritte ist nicht gestattet.
Wir behalten uns alle Rechte, gemäß DIN ISO 16016
an dieser Zeichnung vor.
Bearb.
Datum
Änderungs-Nr.
Werkstoff:
Ausgangsteil, bzw. Rohteil:
-
-
Gepr.
Name Datum
19.04.
Werkstückkanten
DIN ISO 13715
Ersatz für:
Ersetzt durch:
Erstellt
2010
Geprüft
-
Kurz
Zone
1/x
Oberflächenbehandlung / Härte:
-
Blatt:
Änderungsbeschreibung
400
Benennung:
±0.8
1000
30 6
-
±0.3
120
30
±0.2
Zeichn.-Nr. Teile-Nr.
Oberflächenangaben ISO 1302
x.xxxx-xxxxx.x
Zust.
Gußtoleranzen:
Gewicht: (kg)
±0.1
Maßstab:
1:1
Wasserwaage
für Indesign
Der Lieferant muß sicherstellen, dass die Ware in
einwandfreiem Zustand angeliefert wird (Korrosions-
schutz, Verpackung für sicheren Transport).
Rz 25
Rz 160
s
25
z y x w u t
0,05
Rz 1,6
0,3
0,7
1,6
2
Rz 16
6,3
Rz 63
Rz 6,3
Rz 12,5
F:\user\kurz\3D Sachen\3D Teile\Zeichnungen\Wasserwaage
INFO! Newcompressorsarefactory-lledwithinertgas(3barnitrogen).
Leave this service charge in the compressor for as long as possible
and prevent the ingress of air.
  Check the compressor for transport damage before starting any
 work.
4.2 Setting up
?
4.1 Storage and transport
Use transport eyelet.
Do not lift manually!
Use lifting gear!
 Storageat(-30°C)-(+70°C),maximumpermissiblerelativehumidity
10% - 95%, no condensation
Do not store in a corrosive, dusty, vaporous atmosphere or in a com-
bustible environment.
Fig. 10
Fig. 9
ATTENTION! Attachments(e.g.pipeholders,additionalunits,fasteningparts,
etc.) directly to the compressor are not permissible!

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4.5 Laying suction and pressure lines
INFO! Proper layout of the suction and pressure lines directly after the
compressor is integral to the smooth running and vibration behaviour
of the system.
ATTENTION! Improperlyinstalledpipescancausecracks and tears which can
resultinalossofrefrigerant,
A rule of thumb:
Alwayslaytherstpipesectionstartingfromtheshut-offvalvedownwards and
parallel to the drive shaft.
4|Compressor assembly
4.4 Pipes
Pipes and system components must be clean and dry inside and free of scale, swarf and layers of
rust and phosphate. Only use air-tight parts.
Lay pipes correctly. Suitable vibration compensators must be provided to prevent pipes being
cracked and broken by severe vibrations.
Ensure a proper oil return.
Keep pressure losses to an absolute minimum.
Fig. 15
Rigid
fixed point
As short as
possible
4.3 Pipe connections
The pipe connections have graduated inside diameters so that pipes with
standart millimetre and inch dimensions can be used.
The connection diameters of the shut-off valves are rated for maximum
compressor output. Theactualrequiredpipecrosssectionmustbe
matched to the output. The same applies for non-return valves.
Fig.14:graduated
internal diameter
ATTENTION! Do not solder as long as the compressor is under pressure.
Superheating can damage the valve. Remove the pipe supports
therefore from the valve for soldering and accordingly cool
the valve body during and after soldering.
Only solder using inert gas to inhibit oxidation products (scale).

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4|Compressor assembly
Pipe connection
Pipe connection
4.7 Operatingmodeofthelockableserviceconnections
Fig. 18
Opening the shut-off valve:
Spindle:turntotheleft(counter-clockwise)asfarasitwillgo.
—> Shut-off valve completely opened / service connection closed.
Fig. 19
Opening the service connection
Spindle:Turn½-1turntotherightclockwise.
—> Service connection opened / shut-off valve opened.
Service connec-
tion closed
Connection
blocked
Spindle
Service connec-
tion opened
Spindle Connection
open
Compressor
Compressor
Before opening or closing the shut-off valve, release the valve spindle seal by approx. ¼ of a turn
counter-clockwise.
After activating the shut-off valve, re-tighten the adjustable valve spindle seal clockwise.
Fig. 16 Fig. 17
4.6 Operating the shut-off valves
Valve spindle seal
Release
Tighten

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5|Electrical connection
5 Electrical connection
  DANGER! Highvoltage!Riskofelectricshock!Onlycarryoutworkwhenthe
electrical system is disconnected from the power supply!
INFO!
Connect the compressor motor in accordance with the circuit diagram
(seeinsideofterminalbox).
Use suitable cable entry point of the correct protection type
(see name plate)  for routing cables into the terminal box.
Insert the strain reliefs and prevent chafe marks on the cables.
Comparethevoltageandfrequencyvalueswiththedataforthemains
power supply. Only connect the motor if these values are the same.
5.1 Information for contactor and motor contactor selection
Allprotectiondevicesandswitchingormonitoringunitsmustbettedinaccordancewiththelocal
safetyregulationsandestablishedspecications(e.g.VDE)aswellaswiththemanufacturer’sinfor-
mation. Motor protection switches are required! Motor contactors, feed lines, fuses and motor
protection switches must be rated on the basis of the maximum working current (see name plate).
For motor protection use a current-dependent and time-delayed overload protection device for moni-
toring all three phases. Set the overload protection device so that it must be actuated within 2 hours,
if there is 1.2 times the max. working current.
5.2 Connection of the driving motor
The compressor is designed with a motor for star-delta circuits.
Designation on the name plate Sticker on the terminal box
∆/ Y
Star-delta start-up is only possible on 230 V voltage supply. Example:
230 V ∆
Direct start Star-delta start
400 V Y
Direct start only
Elektrischer Anschluss Electrical connection Raccordement électrique ∆/ Y
96027-11.06-DGbF
∆
Niedere Spannung
Low voltage
Bas voltage
Y
Hohe Spannung
High voltage
Haut voltage
L3
L1 L2
L3
L1 L2
Elektrischer Anschluss Electrical connection Raccordement électrique ∆/ Y
96027-11.06-DGbF
∆
Niedere Spannung
Low voltage
Bas voltage
Y
Hohe Spannung
High voltage
Haut voltage
L3
L1 L2
L3
L1 L2
L1 L2 L3
L1 L2 L3
INFO! The connection examples shown refer to the standard
 version.Inthecaseofspecialvoltages,theinstructionsafxedtothe
terminal box apply.

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         

  
























         





 







 




  

 







 










5.3 Circuit diagramm for direct start 230 V ∆/ 400 V Y
Fig. 20 Compressor terminal box
R1 Cold conductor PTC sensor motor winding
R2  Thermalprotectionthermostat(PTCsensor)
F1 Load circuit safety switches
F2 Control power circuit fuse
F3  Safetychain(high/lowpressuremonitoring)
B1  Releaseswitch(thermostat/pressostat)
Q1 Main switch

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         

  
























         





 







 




  

 







 










S1 Control voltage switch
M1 Compressor motor
K1 Compressor contactor
MP10 Electronic trigger unit MP 10
E Oil sump heater
X3 Terminal strip in terminal box
XSS Terminal strip in the external switch cabinet
A1 Alarm Motor protection
A2 Overheating R1, R2
A3 Alarm high pressure
XSS Terminal strip in the external
switch cabinet

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5| Electrical connection
PTC1 PTC2
Terminal box
Fig. 21
ATTENTION!
Terminals 1 - 6 on the trigger
unit MP 10 and terminals PTC
1 and PTC 2 on the compres-
sor terminal board must not
come into contact with mains
voltage. This would destroy the
trigger unit and PTC sensors.
The supply voltage at L1-N
(+/- for DC 24 V version) must
be identical to the voltage at
terminals11,12,14and43.
5.4 Electronic trigger unit MP 10
The compressor motor is tted with cold conductor temperature sensors (PTC) connected to the
electronic trigger unit MP 10 in the terminal box. Readiness to operate is signalled by the H3 LED
(green)afterthepowersupplyisapplied.Inthecaseofexcesstemperatureinthemotorwinding,the
unit switches off the compressor and the H1 LED lights red.
The hot gas side of the compressor can also be protected against overtemperature using a thermal
protectionthermostat(accessory).TheH2LED(red)isprovidedfortheprotectionfunction.
The unit trips when an overload or inadmissible operating conditions occur. Find and remedy
the cause.
5.5 Connection of the trigger unit MP10
INFO! Connect the trigger unit MP10 in accordance with the circuit dia-
gram. Protect the trigger unit with a delayed-action fuse (F) of max.
4A.Inordertoguaranteetheprotectionfunction,installthetrigger
unitastherstelementinthecontrolpowercircuit.
Temperaturemonitoringconnections:
Motorwinding:   Terminals1-2
Thermal protection thermostat: Terminals3-4
Restartprevention:   Terminals5-6
INFO! Theunithasarestartpreventiondevice.Afteryouhaverectiedthe
fault,interruptthemainsvoltage.Thisunlockstherestartprevention
device and the LEDs H1 and H2 go out.

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5| Electrical connection
ThecompressorandthetriggerunitMP10areoperationalwhentheH3LED(green)lights.
5.6 Function test of the trigger unit MP 10
Pos Procedure LED H1 LED H2 LED H3
red red green
1•Interrupt power supply (L1 or S1) OFF OFF OFF
•Releasethemotortemperaturesensorconnection(1or2)
•Releasethehotgastemperaturesensor(ifinstalled)(3or4)
2•Restore the power supply (L1 or S1) ON
•Functioncheckofmotortemperaturesensor:operational ON
•Functioncheckofhotgastemperaturesensor:operational ON
3•Interrupt power supply again (L1 or S1) OFF OFF OFF
•Reconnect terminals 1 or 2 and/or 3 or 4
4•Restore the power supply (L1 or S1): OFF OFF ON
•MP 10 is operational again
Before start-up, troubleshooting or making changes to the control power circuit, check the functionality
ofthetriggerunit:

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6|Commissioning
6.1 Preparations for start-up
6.4 Evacuation
First evacuate the system and then include the compressor in the evacuation process.
Relieve the compressor pressure.
Open the suction and pressure line shut-off valves.
Evacuate the suction and discharge pressure sides using the vacuum pump.
At the end of the evacuation process, the vacuum should be < 1.5 mbar when the pump is switched off.
 Repeatthisprocessasoftenasisrequired.
ATTENTION! Do not start the compressor if it is under vacuum. Do not apply
any voltage - even for test purposes (must only be operated with
refrigerant).
Under vacuum, the spark-over and creepage current distances of the
terminal board connection bolts shorten; this can result in winding and
terminal board damage.
INFO! In order to protect the compressor against inadmissible operating
conditions,high-pressureandlow-pressurepressostatscontrolsare
mandatory on the installation side.
The compressor has undergone trials in the factory and all functions have been tested. There are
therefore no special running-in instructions.
Checkthecompressorfortransportdamage!
6.2 Pressure strength test
DANGER! Bursting! The compressor must only be pressurised using nitrogen
(N2). Never pressurise with oxygen or other gases!
The maximum permissible overpressure of the compressor must not
be exceeded at any time during the testing process (see name plate
data)! Do not mix any refrigerant with the nitrogen as this could
cause the ignition limit to shift into the critical range.
The compressor has been factory-tested for pressure resistance. The following must be observed if
theentireplantissubjectedtoanadditionalpressurestrengthtest:
Test the refrigeration circuit according to EN 378-2 or a corresponding safety standard.
6.3 Leaktest
DANGER! Bursting!
Do not mix any refrigerant with the nitrogen (N2)as this could cause
the ignition limit to shift into the critical range.
Carry out the leak test of the refrigerating system in accordance with EN 378-2 or a corresponding
safety standard without including the compressor.

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6|Commissioning
CAUTION! Wear personal protective clothing such as goggles and protective
gloves!
Make sure that the suction and pressure line shut-off valves are open.
 Withthecompressorswitchedoff,addtheliquidrefrigerantdirectlytothecondenserorreceiver,
breaking the vacuum.
If the refrigerant needs topping up after starting the compressor, it can be topped up in vapour
formonthesuctionside,or,takingsuitableprecautions,alsoinliquidformattheinlettothe
evaporator.
INFO! Avoidoverllingthesystemwithrefrigerant!
 In order to prevent shifts in concentration, zeotropic refrigerant
blends (e.g. R407C) must always only be added to the refrigerating
systeminliquidform.
 Do not pour liquid refrigerant through the suction line shut-off
valve on the compressor.
It is not permissible to mix additives with the oil and refrigerant.
6.5 Refrigerant charge
6.6 Start-up
WARNING! Ensure that both shut-off valves are open before starting the
compressor!
Check that the safety and protection devices (pressure switch, motor protection, electrical con-
tactprotectionmeasures,etc.)arefunctioningproperly.
Switch on the compressor and let it run for at least 10 minutes.
Check the oil level:Theoilmustbevisibleinthesightglass.
 ATTENTION!Iflargerquantitiesofoilhavetobetoppedup,thereisariskofoil
impacteffects.Ifthisisthecase,checktheoilreturn!
6.7 Avoid slugging
ATTENTION! Slugging can result in damage to the compressor and cause
  refrigeranttoleak.
To prevent slugging:
The complete refrigeration plant must be properly designed.
All components must be compatibly rated with each other with regard to output (particularly the
evaporatorandexpansionvalves).
Suction gas superheating at the compressor input should be min. 7 - 10 K (check the setting of
theexpansionvalve).
 Thesystemmustreachastateofequilibrium.
 Particularlyincriticalsystems(e.g.severalevaporatorpoints),measuressuchastheuseofliquid
traps,solenoidvalveintheliquidline,etc.arerecommended.
There should be no movement of refrigerant in the compressor while the system is at a
standstill.

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7.1 Preparation
7.2 Worktobecarriedout
7|Maintenance
In order to guarantee optimum operational reliability and service life of the compressor, we recommend
carryingoutservicingandinspectionworkatregularintervals:
Oil change:
- not mandatory for factory-produced series systems.
 - foreldinstallationsorwhenoperatingneartheapplicationlimit:forthersttimeafter100
to 200 operating hours, then approx. every 3 years or 10,000 - 12,000 operating hours.
Dispose of used oil according to the regulations; observe national regulations.
Annual checks: Oil level, leak tightness, running noises, pressures, temperatures, function of
auxiliary devices such as oil sump heater, pressure switch.
WARNING! Beforestartinganyworkonthecompressor:
Switch off the compressor and secure it to prevent a restart.
Relieve compressor of system pressure.
Preventairfrominltratingthesystem!
After maintenance has been performed:
Connect safety switch.
Evacuate compressor.
Releaseswitch-onlock.
6.8 Connection of oil level regulator
The connection "O" is provided for installing an oil level regulator. A corresponding adapter must be
obtained from the trade.
6|Commissioning
OnlyusegenuineGEABockspareparts!
7.3 Spare parts recommendation
HG12P / ... 60-4 S 75-4(S) 90-4(S) 110-4(S)
Designation Ref. No. Ref. No. Ref. No. Ref. No.
Set of gaskets 80339
Valve plate kit 80352 80353
Oil pump kit 08324