Turning On The Unit; Calibration - Bacharach PUR-CHEK Operation And Maintenance Manual

Pur•Chek ™

4.2 Turning On the Unit

Connect the included AC power supply to the 12 VDC power input jack on the back of the unit. Plug in the AC
power supply to a 110/220 240 VAC outlet.
NOTE: If the optional battery module is installed and charged, the AC power supply is not
required.
Press the left, soft key, power button and the splash screen shown in Figure 1 will appear for approximately
three seconds followed by the elevation screen shown in Figure 2. See section 5.1 for details on setting the
elevation. Depressing the "DONE" button will bring the Pur•Chek™ to the Calibration screen as shown in
Figure 3.
BACHARACH
SOFTWARE VERSION
XXX XX.XXX
Figure 1.

4.3 Calibration

Each time the Pur•Chek™ begins a new test cycle it must fi rst self calibrate. The calibration takes 30 seconds
(Figure 4) and brings fresh air into the unit via an internal pump. This fresh air purges any excess refrigerant
from the unit and ensures accurate test results. Calibration requires that the hose be disconnected from the
refrigerant cylinder or air conditioning system. During calibration, the screen shown in Figure 5 will appear
reminding the user to change the fi lter under certain conditions. For additional details on how and when to
change the fi lter, refer to Section 5, Maintenance and Troubleshooting. The calibration of the unit will expire
after approximately fi ve minutes of inactivity. If this occurs, the screen shown in Figure 6 will be displayed
requiring the calibration to be initiated again.
CALIBRATING
THIS WILL ONLY
TAKE 30 SECONDS
Figure 4.
After calibrating, the unit will display the screen shown in Figure 7. Connect the hose to the tank and press test.
The Pur•Chek™ will display the screen shown in Figure 8. If you wish to change any of the factory default set-
tings, refer to section 5.
Instruction 2100-9000
THE OPERATING
ELEVATION HAS
NOT BEEN SET
SELECT HELP ON
THE NEXT SCREEN
DONE
Figure 2.
CALIBRATING
NOTE
REPLACE FILTER
WHEN WHITE
ELEMENT BEGINS
TO SHOW RED
SPOTS ON OUTSIDE
DIAMETER
Figure 5.
READY TO AIR CAL
1. DISCONNECT
HOSE FROM
TANK
2. PRESS CAL TO
START
OFF HELP CAL
Figure 3.
CALIBRATION TIME
HAS EXPIRED
DISCONNECT HOSE
FROM TANK AND
PRESS CAL TO
RECALIBRATE
CAL
Figure 6.
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