D39489-BA-PM-EN.pdf - 第18页

18 D39489 | Date 12/2019 Diaphragm pump PJ25481 - 950.50.1 8 Safety Translation of origina l Installat ion Instructions , english , KNF 125530 - 31 6634 06/18 7 Hence, mak e sure the tem perature of the medium is suf fic…

D39489 | Date 12/2019

Safety Diaphragm pump PJ25481-950.50.18

6 Translation of original Installation Instructions, english, KNF 125530-316634 06/18

3. Safety

Note the safety precautions in Chapter 6. Installation and con-

nect

ion and 7. Operation.

The pumps are built according to the generally recognized rules of

the technology and in accordance with the occupational safety and

accident prevention regulations. Nevertheless, dangers can result

during their use which lead to injuries to the user or others, or to

damage to the pump or other property.

Only use the pumps when they are in a good technical and proper

working order, in accordance with their intended use, observing the

safety advice within the Installation Instructions, at all times.

Components connected to the pump must be designed to with-

stand the pneumatic performance of the pump.

Take care that safety regulations are observed when connecting

the pump to the electricity supply.

Make sure that only trained and instructed personnel or specially

trained personnel work on the pumps. This especially applies to

assembly, connection and servicing work.

Make sure that the personnel has read and understood the Instal-

lation Instructions, and in particular the “Safety” chapter.

Observe the accident prevention and safety regulations when per-

forming any work on the pump and during operation.

Do not expose any part of your body to the vacuum.

Ensure that the pump is separated from the mains and is de-ener-

gized.

The pump heads heat up during operation – avoid contact with

them.

Make sure that there are no hazards due to flow with open gas

connections, noises or hot gases.

Ensure that an EMC-compatible installation of the pump is ensured

at all times and that this cannot lead to a hazardous situation.

When transferring dangerous media, observe the safety regula-

tions when handling these media.

If the diaphragm ruptures, the transferred medium will mix with the

air in the environment.

Take all necessary care to prevent this leading to a dangerous situ-

ation.

Be aware that the pumps are not designed to be explosion-proof.

Make sure the temperature of the medium is always sufficiently be-

low the ignition temperature of the medium, to avoid ignition or ex-

plosion. This also applies for unusual operational situations.

Note that the temperature of the medium increases when the pump

compresses the medium.

Personnel

Working in a safety

conscious manner

Handling dangerous media

Handling combustible media

D39489 | Date 12/2019

Diaphragm pump PJ25481-950.50.18 Safety

Translation of original Installation Instructions, english, KNF 125530-316634 06/18 7

Hence, make sure the temperature of the medium is sufficiently be-

low the ignition temperature of the medium, even when it is com-

pressed to the maximum permissible operating pressure of the

pump. The maximum permissible operating pressure of the pump

is stated in the technical specifications (Chapter 4).

If necessary, consider any external sources of energy, such as ra-

diation, that may add heat to the medium.

In case of doubt, consult the KNF customer service.

Store all replacement parts in a protected manner and dispose of

them properly in accordance with the applicable environmental pro-

tection regulations. Observe the respective national and interna-

tional regulations. This especially applies to parts contaminated

with toxic substances.

The pumps conform to the Directive 2011/65/EU (RoHS2).

The pumps conform to the safety regulations of the EC Directive

2014/30/EU concerning Electromagnetic Compatibility and the EC

Directive 2006/42/EC concerning Machinery.

The following harmonized standards have been used:

 DIN EN 61010-1

 DIN EN 61326-1 Class A

 DIN EN 50581

The pumps correspond to DIN EN 60664-1:

 The overvoltage category II

 The pollution degree 2

The pump is maintenance-free. But KNF recommends, checking

the pump regularly with regard to conspicuous changes in noise

and vibrations.

Only have repairs to the pumps carried out by the KNF Customer

Service responsible.

Housing with voltage-caring parts may be opened by technical per-

sonnel only.

Use only genuine parts from KNF for servicing work.

Use only the original KNF power supply.

Environmental protection

Standards

Customer service and

repairs

D39489 | Date 12/2019

Technical Data Diaphragm pump PJ25481-950.50.18

8 Translation of original Installation Instructions, english, KNF 125530-316634 06/18

4. Technical Data

Pump materials

Assembly

Material

Diaphragm

PTFE coated

Valve plates

FFPM

O-ring

FPM (head 1-3)

FFPM (head 4)

Head plate

PPS

Intermediate plate

PPS

Tab. 2

Pneumatic values

Parameter

Value

Max. permissible operating

pressure [bar g]

Ultimate vacuum [mbar abs.]

with closed gas ballast

2.0

Delivery rate at atm. pressure

and 5V control voltage [l/min]*

55.0

Tab. 3 *Liters in standard state (1013 mbar)

Pneumatic Connections

Pump type

Value

PJ25481-950.50.18

Hose ID 10

Tab. 4

Electrical data

Parameter

Value

Automatic voltage selection

100-240 V

50 – 60 Hz

Max. current consumption [A]

1.9

Max. power consumption [W]

140

Maximum permitted mains

voltage fluctuations

± 10%

Protection class Motor

IP 20

Protection class Pump

IP 20

Tab. 5

The pump is supplied by a universal power supply with inte-

grated overload

protection.

They are protected against overheating by a temperature sen-

sor on the motor board and equipped with overcurrent protec-

tion.

If one of these safety functions is triggered, the pump will

shut down and must be manually reset, as follows:



Separate pump from mains.

 Remove the cause(s) of the fault before restarting.