Performing A Pressure Switch Test - Martel MC1210 Reference Manual

7.2 Performing a pressure switch test:

Find Quality Products Online at:
HAND PUMP
Figure 24. Pressure Switch Test
1. Use the menu to select SW TEST on the upper display.
2. Connect the calibrator to the switch using the pressure switch terminals. The polarity of the
terminals does not matter. Then connect the pump to the calibrator and the pressure
switch.
3. Make sure the vent on the pump is open. Zero the calibrator if necessary. Close vent after
zeroing the calibrator.
4. The top of the display will read "CLOSE".
SW TEST CLOSE
5. Apply pressure with the pump slowly until the switch opens.
Important NOTE: In the switch test mode the display update rate is increased to help
capture changing pressure inputs. Even with this enhanced sample rate pressurizing device
under test should be done slowly to ensure accurate readings.
6. Once the switch is open, "OPEN" will be displayed, bleed the pump slowly until the
pressure switch closes.
GlobalTestSupply
www.
Pressure
Switch
PRESSURE
MODULE
------
0.000
LIGHT
MENU
F1 F2 F3
7 8 9
4 5 6
HOME
1 2 3
– 0 . CE ENTER
psi
psi
.com
sales@GlobalTestSupply.com
29