2. GAS RECOVERY SYSTEMS - INSTALLATION
2.1.1 The exhaust gas can be exhausted directly to atmosphere, or can be recovered to a lower pressure gas system.
If vented directly to atmosphere, CheckPoint supplies the pump with a muffler to reduce exhaust noise.
2.1.2 If recovering the exhaust gas, connect the gas recovery line from the process to the open 1/2” tubing
connector on the injector. The pressure in the recovery line (“recovery pressure”) must be lower than the supply
pressure. To calculate the recovery pressure given your supply pressure in PSIG, use the following formula:
RECOVERY PRESSURE = SUPPLY PRESSURE -
[DISCHARGE PRESSURE]
- 30 PSIG
[AMPLIFICATION RATIO]
2.1.3 For a GR pump, the maximum recovery pressure, based on a supply pressure of 200 PSIG (the maximum
allowable supply pressure) is given by:
MAXIMUM RECOVERY PRESSURE = 220 PSIG -
[DISCHARGE PRESSURE]
[AMPLIFICATION RATIO]
2.1.4 For more information on how to set up a recovery system for your 5400 or 8400 pump, please contact
CheckPoint or an authorized distributor.
3. PUMP OPERATION
3.1 Setting The Pump Stroke Rate
3.1.1 Setting Pump Speed Using a Calibration Gauge
The following directions are for setting the pump speed using a calibration gauge. There are a variety of calibration
gauges available, including a complete line of appropriately-sized CheckPoint gauges for every CheckPoint pump.
To ensure that your pump is working as is should and that chemical is being delivered at the rate you need, it is
important to use a calibration gauge.
3.1.1.1 Most calibration gauges are designed to read properly when one full minute of pumping has taken place.
However, if the liquid level drops too fast to allow for a full minute, shorter periods are acceptable. Try to size the
gauge so that at least a 30 second test can be made, however, or a loss of accuracy will result.
3.1.1.2 Proper gauge placement and plumbing is important. Please refer to Figure 1 for appropriate valving and
placement, and for reference numbers as used in this section. The calibration gauge is labeled as number 5.
3.1.1.3 With the pump either running or stopped, open the Gauge Fill Valve (shown as #4 in Figure 1). The gauge
(shown as #5 in Figure 1) should begin to fill. Continue filling until the chemical level is at or near the top markings
on the gauge, then close the Gauge Fill Valve.
To Next Page
Loading...
