LAUDA Water Circulation coolers
WK, WKL
YAWE0019/18.12.01
- 20 -
8.
Starting up
•
Connect the unit only to mains socket with protective earth connection (PE)!
Check the details on the label against the mains voltage and frequency!
•
Switch on the mains switch on the right side of the control panel (I). The digital display shows the current
outflow temperature.
•
With types of WKL 7000 (W) and WKL 10000 (W) the pump is driven by a three-phase alternator motor.
The sense of rotation of the three-phase alternating current connection must be observed.
If the discharge pressure display does not indicate any pressure, the sense of rotation of the three-phase
alternating.
Caution:
Must only be carried out by electro-specialist.
•
If no bath liquid is being pumped although the liquid level is sufficiently high, the presence of an air pocket
stops the pump filling with liquid. The remedy is to vent the external circuit at its highest point!
•
Close the bypass valve (clockwise) on the back of the unit until the maximum required pressure in the
external circuit has been obtained. In the case of circuits not affected by pressure the valve should be
closed completely. The resulting outflow pressure is indicated on the pressure gauge located on the front of
the unit. This provides an indication of the flow rate and possible faults.
Under normal conditions the bypass valve of models WK 1400 and WK 2400 is always closed, as the
maximum pressure is 1.0 bar.
The following method may be used to prevent a certain pressure being exceeded even if the external circuit
gets blocked. Close off the outflow (make a kink in the tubing) and then set the maximum permitted
pressure with the bypass valve. Open the external circuit but do not alter the bypass valve setting!
•
Press
the key to display the setpoint. The setpoint is shown for 15 sec. A red LED at the top left on
the display is flashing.
•
Adjust the setpoint using the keys
and
. Then enter the new value with the key
. After 2
sec the display return to the actual value.
•
The red LED K 1 indicates if the compressor is switched on (on WK 4600...WK 10000 (W) and
WKL 4600...WKL 10000 (W), if the refrigeration circuit is switched to cooling).
•
A minimum stop time (delay) between 10s and 100s depending on the water circulation cooler model, is
programmed to limit the switching frequency.
•
Adjustment of the switching point of the alarm contact
.
Factory-set 25 °C. Each temperature within the
temperature range of the unit can be adjusted. Adjustment is being made in the configuration level.
•
The programming (adjustment) of the parameters
(configuration level) can be locked by pressing
simultaneously the keys
and
for 10sec, (POF = Programme Mode OFF appears) or unlocked
which means a programming is possible (PON = Programme Mode ON).
Always lock after programming which means POF is being displayed in the end. A setting of the parameters
is only possible in the mode ON (PON).
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