vacuubrand ME 2C NT User manual

page 1 of 75
Chemistry diaphragm pumps
Chemistry vacuum systems
Chemistry pumping units
Instructions for use
Technology for Vacuum Systems
ME 2C NT
ME 4C NT
ME 4C NT + 2 AK
ME 8C NT
ME 8C NT + 2 AK
MZ 2C NT
MZ 2C NT + 2 AK
MZ 2C NT + AK + M + D
MZ 2C NT + AK + EK
MZ 2C NT + AK Synchro + EK
MD 4C NT
MD 4C NT + 2 AK
MD 4C NT + AK + EK
MD 4C NT + AK Synchro + EK
PC 101 NT
PC 201 NT

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After sales service:
Contact your local dealer or call [phone].
Dear customer,
Your VACUUBRAND diaphragm pumps are designed to provide you with
many years of trouble-free service with optimal performance. Our many
years of practical experience allow us to provide a wealth of application
and safety information. Please read these instructions for use before the
initial operation of your pump.
VACUUBRAND diaphragm pumps combine our many years of experi
-
ence in design, construction and practical operation, with the latest de
-
velopments in material and manufacturing technology.
Our quality maxim is the ”zero defect” principle:
Every diaphragm pump, before leaving our factory, is tested intensively,
including an endurance run of 14 hours. Any faults, even those which oc
-
After completion of the endurance run, every pump is tested, and must
We are committed to providing our customers only pumps that meet this
high quality standard.
While our pumps cannot eliminate all of your work, we design, manufac
-
ture and test them to ensure that they will be an effective and trouble-free
tool to assist you in that work.
Yours,
VACUUBRAND GMBH + CO KG
Trademark index:
®
®
®
®
,
Peltronic
®
, VARIO
®
(US-Reg.No 3,833,788),
VACUUBRAND
®
(US-Reg.No
®
3,733,388) and also the shown company logos are registered trademarks
of
VACUUBRAND GMBH + CO KG in Germany and/or other countries.

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Contents
Safety information!
.............................................................
9
Important information!
.........................................................................
9
General information
............................................................................
11
Intended use
.......................................................................................
11
Setting up and installing the equipment
............................................
12
Ambient conditions
............................................................................
14
Operating conditions
.........................................................................
15
Safety during operation
.....................................................................
17
Maintenance and repair
.....................................................................
19
Important information: Equipment marking (ATEX)
...................
22
Technical data
...................................................................
24
General technical data valid for all pumps/pumping units
.................
24
Gas inlet temperatures
.....................................................................
25
Wetted parts
.....................................................................................
28
Abbreviations
....................................................................................
29
Pump parts
.......................................................................................
29
Use and operation
............................................................
38
Installing a pump in a vacuum system
..............................................
38
During operation
................................................................................
42
Important notes regarding the use of gas ballast
..............................
44
Important notes concerning the operation of the
exhaust waste vapor condenser
........................................................
45
Shutdown & storage
..........................................................................
47
Accessories
......................................................................
48
Troubleshooting
...............................................................
50
Replacing diaphragms and valves
..................................
52
Cleaning and inspecting the pump heads
........................................
54
Replacing the diaphragm
.................................................................
58
Replacing the valves
........................................................................
60
Replacing the overpressure safety relief device
...............................
65
Replacing the fuse
............................................................................
66
Repair - Maintenance - Return - Calibration
...................
67
Warranty
............................................................................
69
Health and safety clearance form
...................................
70
EC Declaration of Conformity of the Machinery
...............
71
China RoHS
.......................................................................
73

page 9 of 75
Safety information!
Important information!
Keep this manual complete and accessible to per
-
sonnel at all times!
Read this manual carefully before installing or op
-
erating the equipment. Observe the instructions
contained in this manual.
Do not modify the equipment without authoriza
-
tion.
This manual is an integral part of the equipment de
-
scribed therein. It describes the safe and proper use
of the vacuum pump.
Make operating personnel aware of dangers arising
from the pump and the pumped substances.
VACUUBRAND disclaims any liability for inappropri
-
ate use of these pumps and for damage from failure
to follow instructions contained in this manual.
This manual is only to be used and distributed in its com
-
plete and original form. It is strictly the users’ responsibility
to check carefully the validity of this manual with respect
to his product.
Manual-no.: 999156 / 07/07/2017
The following signal word panels and safety
symbols are used throughout this manual:
This is the safety alert symbol. It is used to alert you to po
-
tential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury and death.
NOTICE

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DANGER indicates a hazardous situation which, if not
avoided,
will
result in death or serious injury.
WARNING indicates a hazardous situation which, if
not avoided,
could
result in death or serious injury.
avoided, could result in minor or moderate injury.
NOTICE is used to address practices not related to
personal injury.
Caution! Hot surface!
Disconnect equipment from AC power.
Formatting used in this manual:
Note
: The signal word panels in all sections of this manual always refer
to all paragraphs of the same format (
/
signal word panel.
The document ”Safety information for vacuum equipment” is
part of this manual! Read the ”Safety information for vacuum
equipment” and observe the instructions contained therein!
NOTICE

page 11 of 75
General information
Remove all packing material from the packing box. Re
-
move the product from its packing-box and retain all pack
-
aging until the equipment is inspected and tested. Re
-
move the protective caps from the inlet and outlet ports
and retain for future use. Inspect the equipment promptly
and carefully.
If the equipment is damaged, notify the supplier and the
carrier in writing within three days. Retain all packing ma
-
terial for inspection. State the item number of the product
together with the order number and the supplier’s invoice
number. Failure to check and give notice of damage will
Replace the protective caps, if the equipment is not used
immediately. Store the equipment in dry and non-corrosive
conditions (see also ”Technical data”, pg. 24).
Do not use any damaged equipment.
Intended use
Do not use the pump or any system parts on humans
or animals.
Ensure that the individual components are only con
-
nected, combined and operated according to their de
-
sign and as indicated in the instructions for use. Use
only
original manufacturer’s spare parts and ac
-
cessories
. Otherwise the safety and performance of
the equipment, as well as the electromagnetic compat
-
ibility of the equipment might be reduced.
The CE mark or the cTÜVus mark may be voided if not
using original manufacturer’s spare parts.
Comply with all notes on correct vacuum and electri
-
cal connections; see section ”Use and operation”, pg.
38.
NOTICE

page 12 of 75
Do not use the pump to generate pressure.
The pumps are designed for
ambient temperatures
during operation between +50°F and +104°F (+10°C
and +40°C). Periodically check maximum tempera
-
tures if installing the pump in a cabinet or a housing.
Make sure ventilation is adequate to maintain recom
-
mended operating temperature. Install an external au
-
tomatic ventilation system if necessary. If pumping hot
process gases, make sure that the maximum permitted
gas inlet temperature is not exceeded. The maximum
permitted gas inlet temperature depends on several
parameters like inlet pressure and ambient tempera
-
ture (see ”Technical data”, pg. 24).
Particles and dust must not enter the pump.
Do not pump liquids.
pumped substances prior to operation.
Use the equipment
only as intended
, that is, for genera
-
tion of vacuum in vessels designed for that purpose. Any
other use will automatically invalidate all warranty and li
-
ability claims. Remain aware of safety and risks.
Setting up and installing the equipment
Equipment must be connected only to a
suitable elec
-
trical supply
and a suitable ground point. As such,
the plug must be plugged into an outlet that is properly
grounded. Failure to connect the motor to ground may
result in deadly electrical shock.
-
an IEC plug or a plug suitable for your local electrical
supply. The cable contains wires color coded as fol
-
lows: green or green and yellow: ground; blue or white:
neutral; brown or black: hot.
NOTICE

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Due to the high compression ratio, the pump may gen
-
erate overpressure at the outlet. Check pressure com
-
patibility with system components (e.g., exhaust pipe
-
line or exhaust valve) at the outlet.
Do not permit any
uncontrolled pressurizing
.
Check the overpressure safety relief device at the ex
-
haust waste vapor condenser at appropriate intervals.
Keep the electrical power cord away from heated sur
-
faces.
that the system which you are going to evacuate is
Ensure a stable position of the pump without any me
-
chanical contact other than the pump feet.
maximum permissible pressures
at in
-
let and outlet and with
maximum permissible pres
-
sure differences
between inlet and outlet. See section
”Technical data”, pg. 24. Do not operate the pump
with overpressure at the inlet.
bar absolute) in the event that gas or inert gas is con
-
nected to the pump, to the gas ballast or to a venting
valve.
Note
: Flexible elements will shrink when evacuated.
pump.
to be sure that the power source and the equipment
match in voltage, phase, and frequency.
voltage selection switch is set correctly. Do not change
the setting of the voltage selection switch while the
pump is connected to AC power. Unplug the pump be
-

page 14 of 75
fore setting the voltage selection switch.
Note
: If the
pump is switched on with wrong voltage selection, the
motor may be damaged!
coolant outlet pipe
is always free and
that it cannot get blocked. If installing an optional cool
-
ant valve, it must always be in the supply line of the
exhaust waste vapor condenser.
Make sure ventilation is adequate to maintain recommend
-
ed operating temperature. Keep a minimum distance of
2
in (5 cm) between the cooling fan and surrounding items
(e.g., housing, walls, etc.), or else install an external auto
-
matic ventilation system. Check fan regularly for dust/dirt.
Clean fan guard grill if necessary to avoid a reduction of
ventilation.
Use only hoses at the inlet and outlet of the pump with
an inner diameter at least as large as the diameter of the
pump’s tubing (to avoid overpressure at the outlet, and
reduction of pumping speed at the inlet).
Allow the equipment to equilibrate to ambient temperature
if you bring it from cold environment into a room prior to
operation. Notice if there is water condensation on cold
surfaces.
Secure coolant hoses at the hose nozzles (e.g., with hose
clamp) to prevent their accidental slipping.
Comply with all
applicable and relevant safety require
-
ments
(regulations and guidelines).
Implement the re
-
quired actions and adopt suitable safety measures.
Ambient conditions
Do not reach for this product if it has fallen into liquid.
There is a risk of deadly electrical shock. Unplug the
system immediately.
NOTICE

page 15 of 75
Do not use this product in an area where it can fall or
be pulled into water or other liquids.
recommended conditions, e.g., using the equipment
outdoors, installation in higher altitudes, conductive
pollution or external condensation on the pump.
To the best of our knowledge the equipment is in com
-
pliance with the requirements of the applicable EC-direc
-
tives and harmonized standards (see ”Declaration of Con
-
formity”) with regard to design, type and model. Directive
EN 61010-1 gives in detail the conditions under which the
equipment can be operated safely (see also IP degree of
protection, ”Technical data”, pg. 24).
Operating conditions
These pumps are not approved for operation in po
-
tentially explosive atmospheres.
Do not operate the
pumps in potentially explosive atmospheres.
Pumps
without the
”
”
mark on the rating plate
are
not approved
for the
pumping of potentially explo
-
sive atmospheres
.
Do not pump potentially explo
-
sive atmospheres
with those pumps.
Pumps
bearing the
”
”
mark on their rating plates
are
approved for the pumping of potentially ex
-
plosive atmospheres
-
tion
II
3G
IIC T3 X
according to ATEX, but they are
not approved for operation in potentially explosive
atmospheres
(see section „
Important information:
Equipment marking (ATEX)“, pg. 22)
.
The pumps are
not suitable
to pump any of the sub
-
stances listed below.
NOTICE