BA-PM200-english-D08851.pdf - 第6页

second pump head. e.) Refitting the pump heads  At one pump head: Press the lip on the edge of the structured diaphragm  into the groove in the housing.  Place the intermediate plate  , with the valve plates/sealings…

nents before servicing.

2.) Ensure that the service personnel

is not subject to a health hazard.

Apply the safety and protection

measures that are necessary for

the medium that has been handled

by the pump (example: the use of

protective gloves).

3.) Ensure that discarded parts and

materials are safely and correctly

disposed of.

 Use only original KNF replacement

parts.

Required tools and material:

 Service Set (see section 7)

 Philips-head screwdriver No. 2.

Change the structured diaphragms and

valve plates/sealings in the following

sequence:

a.) Preparatory steps

b.) Remove pump heads

c.) Change structured diaphragms

d.) Change valve plates/sealings

e.) Refit pump heads

f.) Final steps.

 The postion numbers in the fol-

lowing text refer to fig. 2.

a.) Preparatory Steps

 Shut down system (see section 4.2)

including disconnecting the pump

from the power source (pull out

plug of electrical supply unit).

 Remove tubing from the inlet and

outlet connectors of the pump.

b.) Removing the pump heads

 On the pneumatic head connec-

tions, loosen one of the union nuts

by hand. Then slightly loosen the

angle-fitting in the pump head by

turning it anticlockwise

, so that the

connecting tube can be pulled out.

 Loosen the outer screws  on

eachpump head.

 Carefully remove both pump heads

(top plate , head plate  and

intermediate plate ).

 The soleonid valve of the

drying system remains fitted

in this situation.

c.) Change structured diaphragms

 Push down one structured dia-

phragm  until other diaphragm is

pushed upwards to its highest

position.

 Carefully unscrew the higher

strucutred diaphragm anti-clock

wise using both hands.

 Replace all spacers / onto the

screw thread of the new structu-

red diaphragm (same number and

order)

 Screw in the new structured dia-

phragm  and tighten it by hand;

you do not need any tool.

 Change the second structured dia-

phragm as described above (step

 to ) for the first.

 Changing the two diaphragms one

after the other ensures that the

same number of diaphragm spa-

cers are refitted as were removed.

This is essential to maintain the

pneumatic performance of the

pump.

d.) Change valve plates/sealings

 Unscrew the three screws  in

the top plate  of one pump head.

 Carefully remove top plate  and

head plate  from intermediate

plate ; exposing the valve pla-

tes/sealings .

 Remove old valve plates/sealings

.

 If there should be deposits in the

recesses in the intermediate plate

, clean them until the deposits

have been completly removed.

 Insert new valve plates/sealings

 in the recesses in the interme-

diate plate  (upper and lower

sides of the valve plates/sealings

are identical).

 Carry out the steps  to  for the

PM 1633-842.3-3.00 e 11/05

Specification



Screw (12x)

 Screw (3x)

 Disk spring

 Top plate

 Head plate

 Valve plate/sealing

 Intermediate plate

 Guide pin

 Structured diaphragm

 Spacer (thick)

 Spacer (thin)

 Dampening ring A

 Screw

 Dampening felt

 Dampening ring B

 Adapter

 Dampening ring C

 Dampening

diaphragm

  































Orientation of disk

springs 

Fig. 2: Pump head for N 842.3_ (exploded drawing, symbolic)

Pump N 842_ has a round shape of head

second pump head.

e.) Refitting the pump heads

 At one pump head:

Press the lip on the edge of the

structured diaphragm  into the

groove in the housing.

 Place the intermediate plate ,

with the valve plates/sealings on

the adapter .

 Place the head plate  on the

intermediate plate  in the posi-

tion indicated by the guide pin .

 Place the top plate  on the head

plate  in the right position.

 Gently tighten screws  in diago-

nal order.

 Screw in the three screws  in

the centre of the pump top plate 

until they are flush with the top

plate; then screw one final half

turn to tighten.

 For orientation of disk springs 

see fig. 2.

 Carry out steps  to  for the

second pump head.

! Refit the pneumatic head connec-

tion:

Place tube onto the connecting

part of the angle fitting, turn angle

fitting to a straight position and

tighten the union nut.

f.) Final steps

 Reconnect system tubing.

 Reconnect the pump to the electri-

city supply.

 If the pump does not reach the

desired vacuum after changing

diaphragms and valve plates/sea-

lings:

 Check whether the spacers have

been replaced onto the diaphragm

screw thread.

 Check the interconnecting pipe-

work connection between both

pump heads as well as the tubing

for leaks.

 Possibly the screws  on one of

the pump heads (or both heads)

are insufficiently tightened

(carefully tighten them again

crosswise).

 If you have any questions about

servicing call our technical adviser

(see last page for contact tele-

phone number).

6. Troubleshooting

 Sufficient vacuum is not reached

Possible reasons:

 Tube connections are not tight

 Condensate in the pump head

 Switch the drying system on

or reduce the interval bet-

ween pump head ventilation

operations.

 Diaphragms and/or valve plates/

sealings are worn out

 Changing diaphragms and

valve plates/sealings: see

section 5.

 If this problem occurs after chan-

ging of diaphragms or valve pla-

tes/sealings:

 See information in section 5.

 Pump is switched on, but does not

run, the on/off-switch on the pump

is not lit

Possible reasons:

 Pump is not connected with the

power source.

 No voltage in the power source.

 Fuse in the pump is defective (only

authorized/qualified personnel

should investigate this problem):

 Disconnect the pump from

the power source by pulling

out plug.

Placement of fuse:

 The fuse is accessible after

opening the marked cover at

the bottom of the pump.

Dimension of the fuse:

see section 8.

 Pump is switched on, but does not

run, the on/off-switch on the pump

is lit

Possible reason:

 The thermal switch has opened

due to overheating

 Disconnect the pump from

the power source, let the

pump cool down, investigate

the reason for the overhea-

ting and irradicate it.

7. Ordering Information

Service Set

A Service Set contains all

replacement parts needed for one

complete service of the pump.

Service Set contains

2 diaphragms and 4 valve plates/

sealings

Order No.

057359

8. Specifications

Capacity: max. 34 l/min

Ultimate vacuum: 4 mbar abs

Permissible opera-

ting pressure: max. 1 bar

Permissible ambient

temperature: +5... +40°C

Hose connection for tube ID 10 mm

Voltage pump: 230 V

Frequency: 50 Hz

Power consum-

ption pump: 220 W

Fuse pump

(2 x): 3.15 T [A]

IP 44

Voltage soleonid

valve 24 V DC

 CE - Safety Demands

 The pumps correspond to the

safety regulations of the EU low

voltage directive 73/23 EWG and of

the EU directive concerning elec-

tromagnetical compatibility 89/336

EWG. The requirements of the fol-

lowing harmonised standards are

fulfilled:

EN 55014

EN 61000-6-1

EN 61000-6-3

EN 61000-3-2/3

EN 61010-1

 The pumps correspond to IEC 664:

 the overvoltage category II

 the pollution degree 2.

PM 1633-842.3-3.00 e 11/05

Appendix:

Customer statement for

repair order (sample

statement for copying)

 In order for KNF to repair the

pump, the customer must provide

a statement on the media which

were pumped and on pump

cleaning. Please fill out the cor-

responding KNF form, and submit

it together with the pump.

Statement/Certificate

We confirm that the pump

model listed below

(please specify)

.............................................

Serial-No. (please specify)

.............................................

was used to pump the fol-

lowing media:

.............................................

and that the pump listed

above was cleaned. There

are no poisonous, aggres-

sive, biological, radioac-

tive or other dangerous

media in the pump.

................ ......................

Company Date/

Signature

PM 1633-842.3-3.00 e 11/54

KNF Neuberger GmbH

Alter Weg 3

D-79112 Freiburg

Tel. ++49/7664/5909-0

Fax ++49/7664/5909-99

E-Mail: info@knf.de