Operation and Maintenance Instruction Manual
8
P/N 2100-9001 Rev 3
4. Operation
4.1. First Use
The Pur•Chek™ Pro has a built-in Lithium Iron Phosphate battery. Prior to the first use, charge the
battery for a minimum of 2 hours with the included AC power supply. If a power outlet is accessible you
may also use the AC power supply to power the unit. The analyzer will function and charge the battery
while the AC Power Supply is connected.
NOTE:
The Pur•Chek™ Pro can be operated with or without the battery using the supplied AC
adapter.
4.2. Turning On the Unit
Ensure the unit has either battery power (charged battery), or use the AC power adapter. For the latter,
connect the included AC power adapter to the 12 VDC power input jack on the back of the unit (refer to
Figure 3-6 on page 7). Plug in the AC power cord to a 110-240 VAC outlet.
Press the left soft key (the power on/off button). The splash screen shown in Figure 4-1 A will appear for
approximately three seconds followed immediately by the screen in Figure 4-1 B. If you wish to adjust
factory settings press ‘SET’ and refer to Section 5: Maintenance and Troubleshooting on page 15.
If you
do not need to adjust the settings, connect the sample hose to the analyzer (Figure 4-1 C) in preparation
for calibration, then wait approximately 30 seconds for the unit to warm up.
(A)
(B)
(C)
Figure 4-1. Sample Screens Showing Typical Start-up Sequence
4.3. Calibration
NOTE:
The supplied sample hose needs to be connected to accomplish proper calibration.
Verify the sampling hose assembly is connected to the analyzer and making sure it is
disconnected from any refrigerant source before calibration.
When you first turn the unit on an Air Calibration will be required; additional air calibrations are only
required periodically. A reminder to perform air calibrate will appear when needed (refer to Figure 4-2 A).
Press ‘CAL’ to calibrate the machine.
When calibrating, the unit will pull fresh air into the sample cell via an internal pump. This fresh air purges
any excess refrigerant and ensures accurate test results. Calibration requires that the sample hose is
disconnected from the refrigerant cylinder or air conditioning system and remains connected to the
