Martel Electronics MECP2000 User Manual

under test. Failing to do this will allow dirt and fluids to enter the
pump during the vacuum generation process.

Maintenance

If you follow the above mentioned operating procedure the pump will
offer trouble free operation for a long time. However like any pneumatic
device seals, valves and moving parts will wear over time. Dirt, moisture
and other contaminates will greatly shorten the life span of the pump
and will lead to frequent service intervals. Martel offers a kit that includes
most of the high wear items. The pump must be taken apart to gain
access to some of these parts so maintenance should only be carried
out by individuals who have technical expertise in servicing pneumatic
devices. To obtain a service kit order Martel Electronics Corp. part
number 1010075.

You can also return the pump at any time for service by completing a
RMA service request form which can be found on our web site,
www.martelcalibrators.com/pdf/martel_rma_form.pdf.

MECP2000

Warranty

Martel Electronics Corporation warrants the MECP2000 pneumatic
pump against defects in materials and workmanship for a period of
twelve (12) months after date of sale. An invoice may be required as
proof of purchase for warranty claims. Damage due to contamination or
other misuse is not covered under this warranty.

To obtain warranty or non-warranty service download an RMA form
from www.martelcalibrators.com/pdf/martel_rma_form.pdf. Complete the
form and include it with the shipment. Send the product pre-paid using
a trackable shipment method to the address on the form. Martel is not
responsible for goods sent by postal mail without tracking information.

www.martelcorp.com

e-mail: [e-mail]

Tel: [phone]

Fax: [phone]

Martel Electronics

3 Corporate Park Dr.

Derry, NH 03038

High Pressure

Pneumatic Hand Pump/Comparator

Operating Instructions

Introduction

The Martel MECP2000 pneumatic hand pump is capable of
generating pressures up to 2000 psi (135 bar) and vacuum down to -14
psi (0.9 bar) at sea level. For very low pressures (less than 15 psi/1 bar)
the fine adjustment vernier can be used to generate precise pressures.
The pump uses a unique dual stage pumping design where the initial
part of the stroke fills the air chamber which at mid stroke forces the air
into a smaller chamber to boost the pressure even further. The design
allows for high pneumatic pressures to be achieved with a minimal
amount of effort.

The pump has two dedicated output ports so a reference device
(calibrator or digital gauge) can be attached into one of the ports and
the device under test can be connected to the other port. The pump
also incorporates a unique isolation valve that greatly reduces the leak
rate by sealing the output ports from the pump valving. This feature also
helps keep contaminates away from the pumping valves during the
venting process.

Rev B 4/12 P/N 0219967

Operation

Before you begin to use the pump familiarize yourself with the
controls and connections on the pump. The drawing below highlights
these components.

1. Inspect the fitting or device to be installed on the pump to be sure it
is clean and the threads are in good condition. Clean or replace if
necessary.

2. Using approximately 6" (150 mm) of the provided Teflon tape, wrap
around the threads on the fitting or device in a clockwise direction
(facing the open side of the fitting). Using too much Teflon tape is a
common error. In the event that the use of Teflon tape is not
permitted, an alternate thread sealant may be substituted. If an
alternate is used, it should exhibit both sealing and lubricating
properties.

3. Apply a thin coating of the supplied anti-seize lubricant over the
Teflon tape. This lubricant prevents extrusion of the Teflon tape and
galling as the threads mate.

4. Install the male threaded fitting into the pump fitting hand tight
making sure the threads are not cross-threaded. It should go in 2
turns to hand tight. If not, remove and retry hand tightening.

5. IMPORTANT! Use a ¾" (19 mm) backup wrench on the pump fitting
as well as a properly sized wrench for the fitting to be installed. The
use of adjustable wrenches is NOT recommended for this
application. Failure to use a backup wrench may result in damage

to the threads in the crossbar manifold. THIS WILL VOID THE
PUMP WARRANTY.

6. Continue to tighten the fitting 2 turns clockwise past hand tight. If
necessary, the fitting can be tightened up to 3 turns only.

7. Check for leaks. Do not continue to tighten the fitting if leaks occur.
Instead, remove the fitting from the pump, clean any Teflon tape and
lubricant from the fitting and repeat this procedure beginning at step
2 above.

8. Connect the device under test to the left side output port. Again be
sure to use Teflon tape. A BSPP adapter is provided if needed.

9. Place the pressure/vacuum selector switch into the desired mode.
Note that the selector switch has a spring loaded safety interlock. You
must move the interlock out from under the selector switch in order to
push the selector switch in to activate the vacuum mode. To avoid
damage to the pump, please make sure that all pressure is released
before the Pressure/Vacuum Selector switch is toggled in either
direction.

10. Set the valves in the following positions (these settings apply to both
pressure and vacuum).

11. Close the vent valve (gently turn it clockwise unit it bottoms out).

12. Open the isolation valve (for best performance make sure that it is at
least one turn open from being fully closed).

13. Place the vernier (fine adjustment knob) near the middle of it’s travel.

14. Slowly raise the pump handle and begin to pump to the desired
pressure. It’s important that you use the full range of stroke to
generate the pressure to minimize the amount of strokes needed. It’s
even more important if the desired pressure is above 500 psi (35 bar)
as without a full stroke the secondary pressure chamber is not fully
activated.

15. Once the desired pressure (or vacuum) is reached gently close the
isolation valve and use the vernier knob to make the final pressure
adjustments.

16. To release the pressure (or vacuum) SLOWLY open the vent by
turning the vent knob counterclockwise to release the pressure.

17. Open isolation valve to relieve any trapped pressure.

Tips for using the pump

• Try to always use the isolation valve especially at high pressure to
reduce the leak rate and stabilize the pressure. The internal pump
leak rate is very small even without using the isolation valve but using
the valve also helps prevent contaminates from entering the pump
during the venting process.

• Always be gentle with the valve controls to prevent damage to the
valve seats. It doesn’t take much torque to fully close a valve.

• When using the pump in the vacuum mode take care to insure that

any liquid or dirt is has been removed or cleared from the device