Pulsafeeder Pulsar DLC - Manual (Page 11)

6
A VOID LOCATIONS WHERE THE DLC WOULD BE SUBJECTED TO EXTREME COLD OR HEAT [ LESS
THAN –18
°
C ELSIUS (0
°
F AHRENHEIT ) OR GREATER THAN 40
°
C ELSIUS (104
°
F AHRENHEIT )]
OR DIRECT SUNLIGHT . F AILURE TO OBSERVE THIS WARNING COULD DAMAGE THE DLC AND
VOID ITS WARRANTY .
5.2 Installation Notes
1. The DLC is a microprocessor based controller that uses electro-static sensitive CMOS components. Do
not make any electrical connections (high or low voltage) without adequately grounding the DLC and
the worker to eliminate an electro-static charge between the two. A conductive wrist strap worn by the
worker and attached to the DLC enclosure is adequate to satisfy this requirement.
2. Calibration is an important element of successful DLC operation. Permanent installation of a
calibration column as depicted in Figure 1 is strongly recommended.
3. Conduit connections can carry fluids and vapors into the DLC causing damage and void the warranty.
Care should be taken when installing conduit to protect against fluid/vapor entry. If necessary, provide
sealed entries or conduit drains near the point of entry.
5.3 Electrical Wiring
The DLC has many advanced features that may make wiring the unit appear complicated. Wiring is
actually very simple – one high voltage connection is all that is required to take advantage of a majority
of the DLC's features. It is highly recommended that you take a step-by-step approach to wiring and
confirming proper DLC operation:
1. Make the high voltage connection. These will allow you to operate the DLC and attached PULSAR
pump.
2. Power-up and test the DLC to confirm the connections and check for proper operation.
3. Power-down the DLC.
4. Decide which low voltage Inputs (e.g., 4-20mA in) will be used and make those connections.
5. Power-up and test the DLC to confirm the connections and check for proper operation.
6. Power-down the DLC.
7. Decide which low voltage Outputs (e.g., 4-20mA out) will be used and make those connections.
8. Conduct a final power-up and test the DLC to confirm the connections and check for proper operation.
9. Go to the Section 6 – Start Up Instructions for details on how to perform the power-up tests.