Device Description; Environmental Conditions; Device Types; Varioflex Pump - Lauda PROLINE P 5 C Operating Instructions Manual

4

Device description

4.1

Environmental conditions

The operation of the thermostats is only allowed under the following conditions as specified in
DIN EN 61010-2-010:2003 and DIN EN 61010-1:2001:
 Indoor use only.
 Elevation up to 2000 m above sea level.
 Foundation must be dense, even, non-slippery and non-flammable.
 Ambient temperatures range ( 11).
Use only within this range for an undisturbed operation.
 Mains supply voltage fluctuations ( 11).
 Relative humidity ( 11).
 Transient over voltage according to Installation Categories (Over voltage Categories) II.
 Pollution degree: 2.
4.2

Device types

The type designation of the Proline heating thermostats always begins with P for Proline. The meaning of the follow-
ing letters is: V for clear-view thermostats respectively VL with insulation for an extended temperature range, J for
calibration thermostats respectively JL with insulation for an extended temperature range. The following numbers are
equal to the bath volume in liters.
The models PB for min. 200 mm bath depths and PBD for min. 320 mm bath depths can be used as bridge ther-
mostats.
Examples: P 5 C is a Bath thermostat with 5-liter bath and Command remote control.
PVL 15 is a clear view thermostat with 15-liter bath and operating temperature up to -60 °C (with
LAUDA add-on cooler).
PJ 12 C is a calibration thermostat with 12-liter bath and Command remote control.
PBD C is a bridge thermostat with big immersion depth and Command remote control.
4.3

Varioflex pump

All units are fitted with a Varioflex pump with an 8-stage variable drive. The pump power can therefore be optimally
matched to the relevant task: High pump pressure when, for example, long hoses pass to external loads or circulation
is to be provided for a large bath. Low pressure when the heat input into the bath must be low.
With heating thermostat P 5 C the Varioflex pump enables as a pressure/suction pump, the very effective supply of
pressure-sensitive glass reactors which have a minimum permissible pressure rating.
The thermostats PJ 12 with extreme bath depth and the bridge thermostats PBD are equipped with a very effective
pressure pump as all clear view thermostats (PV 15, PVL 15, PV 24, PVL 24, PV 36).
Furthermore, open vessels can be operated when a constant level controller (accessory LCZ 0660) is used (except
PV/PVL).
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