KNF UN86AT.16I Manual de usuario

Operating and Installation Instructions

Diaphragm

Vacuum Pumps and

Compressors

Type range: UN86AT.16I

UN86ST.16I

Fig. 1: UN86AT.16I with IP 00-Motor

You have selected a high-quality KNF product; the following tips will help you operate it safely and reliably

over a long period of time. Carefully study the Operating and Installation Instructions before using the

pumps and observe at all times the relevant instructions to avoid dangerous situations. The manual was

produced for the serial pumps stated above. With customer-specified projects (pump types starting with

“PU“ or “MPU“) there could be differences in detail. For customer-specified projects please therefore take

into account any agreed technical specifications, as well as these instructions.

List of Contents Page

Description, Operating Conditions............................................ 2

Safety ....................................................................................... 3

Installation ................................................................................ 5

Operation.................................................................................. 6

Servicing................................................................................... 8

Cleaning ................................................................................. 11

Trouble Shooting .................................................................... 12

Replacement parts ................................................................. 13

Accessoires ............................................................................ 13

10.

Tables..................................................................................... 14

11.

Product Return ....................................................................... 15

KNF Neuberger, Inc

2 Black Forest Rd

Trenton, NJ 08691-1810

Phone: 609-890-8600

Fax: 609-890-8323

www.knf.com/usa.htm

Ident#121260-211596

Revision (11/13)

Description, Operating Conditions Diaphragm Vacuum Pumps UN86_.16I

1. Description, Operating Conditions

KNF pumps in the N 086.16 range transfer, evacuate and

compress 100% oil-free. In operation they are gas-tight (leak rate:

6 x 10

-3

mbar x l/sec), and maintenance-free.

They have temperature-resistant pump heads for media

temperatures up to 240 °C.

1.1. Electrical Equipment

See the type-plate for full electrical data of the motor.

The protection class of standard version is IP00.

1.2. Operating Conditions

Handling air, gases, and vapours at temperatures between

+ 5 °C … + 240 °C.

For maximum permissible operating pressure, ultimate vacuum,

and flow capacity see section 10.

The pumps must not be used in areas where there is a danger of

explosion.

Before pumping a medium, the compatibility of materials of pump

head, diaphragm and valves with the medium must be checked (for

pump materials: see section 10).

These pumps must not be used for liquids. You will find suitable

liquid pumps in our Product Program.

If your potential application lies outside the above limits discuss it

with our technical adviser (see last page for contact telephone

number).

1.3. Ambient Conditions

When the pump is operating the following ambient conditions must

be maintained:

Ambient temperature during operation: between + 5 °C …

+ 40 °C.

The pumps must be protected from the effects of dust and

water.

The pumps must not be used in areas where there is a

danger of explosion.

During operation an adequate supply of air for cooling

must be provided.

1.4. Pump materials

See section 10.

Diaphragm Vacuum Pumps UN86_.16I Safety

2. Safety

The pumps have Protection Class 00, and so offer no

protection against contact or foreign bodies. It is therefore

essential to provide protection for persons against contact

with live parts (e.g. electrical connections, motor windings),

and moving parts (e.g. fan). Protection against the entry of

foreign bodies must also be provided.

The pump has no protection against water. In this case too, as far

as is relevant, measures to protect the pump must be taken before

putting it into service.

Note that the pumps may only be used for their intended purpose.

The pumps must not be used in areas where there is a danger of

explosion.

For vacuum pumps, the exhaust gases must be safely disposed.

Components connected to the pump must be designed to

withstand the pneumatic performance of the pump.

Take care that safety regulations are observed when connecting

the pump to the electricity supply.

For pumps with thermal switch: When the operation of the pump is

interrupted by the thermal switch, the pump will re-start

automatically after cooling down. Take all care necessary to

prevent this leading to a dangerous situation.

Specific safety instructions for the media being handled must be

observed.

When using hot media, the pneumatic pump suction and pressure

lines heat up, as does the pump head. Do not touch these parts;

they could burn you.

Use only original KNF spare parts.

For the purposes of the Machinery Directive 2006/42/EC, pumps

are “partly completed machinery,” and are therefore to be regarded

as not ready for use. Partly completed machinery may not be

commissioned until such time as it has been determined that the

machine in which the partly completed machinery is to be

assembled is in conformity with the provisions of the Machinery

Directive 2006/42/EC. The following essential requirements of

Annex I of Directive 2006/42/EC (general principles) are applied

and observed:

General Principles No. 1

No. 1.1.3 / 1.1.3 /1.3.1 / 1.3.4 / 1.4.1 / 1.5.1 / 1.5.2 / 1.5.8 /

1.5.9 / 1.7.4 / 1.7.4.1 / 1.7.4.3

As these partly completed machinery are OEM-models the power

supplies and the equipment for disconnecting and switching-off the

partly completed machinery respectively have to be considered

when mounting as well as over-current and overload protective

gear.

EC Directives / Standards

Safety Diaphragm Vacuum Pumps UN86_.16I

In addition a protection against mechanical parts in motion and hot

parts, if existing, has to be provided when mounting.

The pumps conform to the EC Directive 201/65/EU (RoHS2).

The pumps conform to the EC Directive 2004/108/EC concerning

Electromagnetic Compatibility.

The following harmonized standards have been used:

DIN EN 55014-1/2

DIN EN 61000-3-2/3

DIN EN 60335-1

Diaphragm Vacuum Pumps UN86_.16I Installation

3. Installation

The pumps are OEM models intended for installation in equipment.

When installing them make certain that accident prevention

regulations, and safety instructions, including those for subsequent

operation are observed. The safety instructions in section 2 must

be observed.

The dimensions of the mountings are given in the Data Sheet.

Install the pump so that the fan can draw in sufficient cooling air.

Install the pump so as accidental finger contact is with the fan is

impossible.

Fit the pump at the highest point in the system, so that condensate

cannot collect in the head of the pump - that prolongs working life.

When making the electrical installation the safety regulations

must be observed. In particular make sure that the electricity

supply is isolated before trying to connect the pump.

Compare the supply data with the data on the motor-plate. The

voltage must not vary by more than +6% and -10% from that

shown on the type-plate.

The earth (ground) wire must be connected to the motor.

In the electrical installation, arrangements (complying with EN

60335-1) must be made for disconnecting the pump motor from the

electrical supply.

The pump must be installed so that contact with live parts (e.g.

electrical connection) is impossible.

We recommend that a fuse is installed in the supply circuit; the

operating current is given in Data Sheet.

Remove the protection plugs from the port threads.

Connect the suction and pressure lines (for size of the port threads

see section 10). For flow direction see marking on the pump head

or data sheet.

Arrange the suction and pressure lines so that condensate cannot

run into the pump (sloping lines).

Mechanical

Electrical

Pneumatic

Operation Diaphragm Vacuum Pumps UN86_.16I

4. Operation

The pumps must not be used in areas where there is a danger of

explosion.

Specific safety instructions for the media being handled must be

observed.

If combustible media are used:

Hazard of fires and explosions due to excessively high

media temperature.

Be aware that the pumps are not designed to be

explosion-proof.

Make sure the temperature of the medium is always

sufficiently below the ignition temperature of the medium,

to avoid ignition or explosion. This also applies for unusual

operational situations.

Note that the temperature of the medium increases when

the pump compresses the medium.

Hence, make sure the temperature of the medium is

sufficiently below the ignition temperature of the medium,

even when it is compressed to the maximum permissible

operating pressure of the pump.

The maximum permissible operating pressure of the pump

is stated in the technical specifications (section 10).

If necessary, consider any external sources of energy,

such as radiation, that may add heat to the medium.

In case of doubt, consult the KNF customer service.

Before pumping a medium, the compatibility if material of pump

head, diaphragm and valves with the medium must be checked (for

pump material: see section 10).

The pump must not start against pressure or vacuum. When it is

switched on the pressure in the suction and pressure lines must be

atmospheric. This must be so even when the pump restarts after

the power has been cut off for a short period.

The maximum permissible operating pressure (see section 10)

must not be exceeded.

To prevent the maximum permissible operating pressure being

exceeded, restriction or control of the air or gas flow should only be

carried out in the suction line.

If restriction or control of the air or gas flow is made on the pres-

sure side ensure that the maximum permissible operating pressure

is not exceeded.

When the pump is at a standstill the inlet and outlet must be at

normal atmospheric pressure.

The pumps must not be used to produce vacuum and pressure at

the same time.

Diaphragm Vacuum Pumps UN86_.16I Operation

For pumps with a thermal switch: When the operation of the pump

is interrupted by the thermal switch, the pump will re-start

automatically after cooling down. Take all care necessary to

prevent this leading to a dangerous situation.

Diaphragm and valve plate are the only parts subject to wear.

Wear is usually indicated by a drastic reduction in the pneumatic

performance. When replacing parts proceed as described in

section 5.

Ambient conditions: see section 1.3.

Servicing Diaphragm Vacuum Pumps UN86_.16I

5. Servicing

Before working on the pump, isolate the power supply

securely, then check that the lines are not live.

Diaphragm and valve plate are the only parts of the pump subject

to wear. They are simple to change.

Always change diaphragm, valve plate and sealing ring at the

same time. If diaphragm and valve plate are not changed at the

same time the nominal performance of the pump is not guaranteed

after the service.

If aggressive, toxic or other types of gases hazardous to health

have been pumped please observe:

1. Clean the pump and its components before servicing.

2. Ensure that the service personnel is not subject to a health

hazard during diaphragm and valve plate changes. Apply the

necessary safety measures (example: the use of protective

gloves).

3. Ensure that the discarded parts and materials are safely and

correctly disposed of.

After opening the pump head, or replacing the diaphragm and

valve plate the initial gas-tightness is no longer guaranteed. A leak

test is able to verify that the original standard of gas-tightness has

been achieved.

Spare part* Quantity

Valve plate 1

Wave diaphragm (assembly

consisting of two equivalent parts)

O-ring 1

Tab. 1 * According to Spare parts list, section 8

Tools/Material

Fork wrench or socket wrench 5.5 mm

Pin-wrench for two hole nuts, pin diameter 4 mm (available as

“wrench for retainer plate”, a KNF accessory, see section 9)

Holding tool (see accessories, section 9)

Heat-resistant thread adhesive (e.g. DELO ML 5327)

Felt-tip pen

Tab. 2

Change the structured diaphragm and valve plate in the following

sequence:

a) Preparatory step

b) Removing pump head

Parts required

Tools/material required

Diaphragm Vacuum Pumps UN86_.16I Servicing

c) Changing diaphragm

d) Changing valve plate and sealing ring

e) Refitting pump head

f) Final step

Fig. 3: Pump head (exploded drawing)

Fig. 2: UN86.16AT.16I

Fig. 4: Orientation of disk springs (5)

Specification

Pos. Description

1 Carrier

2 Wave diaphragm

3 Intermediate plate

4 Head plate

5 Disk spring

6 Nut

7 Retainer plate

8 Diaphragm support

9 Connecting rod extension

10 O-ring

11 Valve plate

12 Washer

13 Fan

MMark

Servicing Diaphragm Vacuum Pumps UN86_.16I

The item numbers in the following instructions refer to figs. 2 to 4.

Proceed as follows:

a) Preparatory step

1. Disconnect the pump from the power supply; check that the

pump is electrically dead and secure this.

b) Removing pump head

1. Mark the position of carrier (1), intermediate plate (3), and

head plate (4) relative to each other by a drawing line (M) with

a felt-tip marker. This is to ensure that the parts will be

reassembled in correct position at a later stage.

2. Release the nuts (6) and remove them together with the disk

springs (5).

The disk springs are fitted in order to maintain the tension of

the wave diaphragm right across the temperature range of the

pump.

3. Remove head plate (4).

4. Remove O-ring (10) from head plate (4).

5. Remove the valve plate (11) and the intermediate plate (3).

c) Changing diaphragm

1. Release the retainer plate (7) by turning it anti-clockwise with a

pin wrench or a wrench for retainer plate. While doing so, hold

the connecting rod extension (9) in place with holding tool.

Take care to ensure that the washer (12) does not slip under

the diaphragm support (8)

2. Remove wave diaphragm (2).

3. Check that all parts are free from dirt and clean them if

necessary (see section 6. Cleaning).

4. Slide a new wave diaphragm (2) onto the threaded bolt of the

retainer plate (7).

The wave diaphragm assembly consists of two equivalent

parts placed on top of one another; the top and bottom are

identical.

5. Apply a small amount of heat-resistant thread adhesive (e.g.,

DELO ML 5327) to the thread of the retainer plate (7).

6. Screw the retainer plate (7) with wave diaphragm (2) into the

connecting rod extension (9); to tighten the retainer plate, use

the wrench for retainer plate/the pin wrench to turn it clockwise

(torque: 4.6 Nm). While doing so, hold the connecting rod

extension (9) in place with the holding tool; and hold the wave

diaphragms so that they do not twist.

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