amiad SAF-6000, Инструкции по установке, эксплуатации и обслуживанию

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SAF 6000 910101-000107 07.2019 Page 10 of 28
System Operation modes:
The filtration system may be found in one of the following modes:
1. Filtering mode: This is the normal operating status. The flush mode is idle and the power light on the control board is lit.
2. Flush mode: The motor and exhaust valve activate according to the previously described self-cleaning process.
3. Continuous flushing mode: It is possible to activate the self-cleaning mechanism continuously by setting the SW1 switch in the
control board to "CONT." position.
4. Malfunction mode: If the filter malfunctions, the self-cleaning operation stops, the malfunction light on the control board is turned
on and a 24V AC external output is activated.
The filtration system enters a malfunction mode under any of the following conditions:
1st. A continuous signal from the pressure differential switch longer than the PD fault time-out (default value=15 minutes) indicates
that the filter is unable to clean itself.
2nd. The motor Over Load protector was activated, either manually or due to actual over load.
3rd. Limit Switch malfunction - (usually, simultaneous activation of both limit switches).
Initiation of self-cleaning:
The filter initiates the self-cleaning process under any one of the following conditions:
1. PD flush - The Pressure Differential Switch (PDS) closes a free potential contact signal when the pressure differential across the
screen reaches the pre-set value (usually 0.5 bar =7 psi). The control board registers the signal and activates the flushing cycle.
2. Test flush - Manually pressing the "TEST" push button on the control board door activates a single flushing cycle.
3. Timed flush - SW1 must be in the DP/Time position. The T1 timer in the control panel activates the flushing cycles at time intervals,
regardless of the pressure differential. The timer resets after every flushing cycle. The PD flush mode is active in this mode as well.
4. Continuous flush - SW1 must be in cont position. In this mode the filter flush continuously. This mode is for use in extraordinary
circumstances and for a limited time. Please consult with the manufacturer regarding the uses of this mode.
Control system:
Two types of control boards are available: PLC Type and Relay Type. See Appendix A or B for details.