CLEAN BURN CB-1400, Руководство оператора

Страница: 44 / 108

Operator's Manual: Model CB-1400
4-16
Installing the Pressure Relief and Low-Flow Check Valve
ATTENTION: It is critical that you adhere to the following specifications for pressure relief and
low-flow check valve installation; if these specifications are not met, the metering pump will not
function correctly and the burner will shut down on reset.
The metering pump requires the installation of a pressure relief and low-flow check valve as shown in Figures
4H, 4J, and 4K.
• The pressure relief will open and relieve pressure on the line if there is a restriction in the
pressure oil line, clogged nozzle, etc.
• The low-flow check valve is a vital component which maintains pressure in the oil pressure
line.
Be sure to use Permatex #2 non-hardening gasket sealer to seal every threaded fitting. DO NOT use teflon
tape or teflon pipe dope compounds.
1. Refer to Figure 4K.
2. Remove the plug from the gauge port on top of the metering pump head.
3. Install the pressure relief valve assembly in a vertical position in the gauge port. Note that the
directional arrows on the relief valve must be positioned so that the arrows point away from the
pump head (i.e. in the direction of the oil flow).
4. Install 1/4" O.D. copper tubing (user-supplied) from the pressure relief back to the oil tank.
Refer to Figure 4J as needed.
I88692−A
32062
32293
32425
32424
TO TANK
TO BURNER
32335
FROM PUMP
ADAPTOR PIPE, 1/4 F X 1/8 M
LOW FLOW CHECK VALVE
1/4 NPT BRASS TEE
RELIEF VALVE
MALE CONNECTOR
1/4 T TO 1/4 NPT
PRESSURE RELIEF
VALVE COMPONENTS
Included with metering pump
Figure 4K - Pressure Relief Valve Assembly Detail