Presto W91t

The PRESTO® W91 Highly Dynamic Temperature Control Systems are amongst the most powerful units available. Their impressive power is harnessed by cutting-edge control technology. The W91 provides extraordinary heating, cooling, and pumping performance. But it also comes with the functions and features that make the new generation of PRESTO® so unique.



Your advantages

-Extremely fast cool-down and heat-up times

-Wide working temperature range without changing the bath fluid

-Very fast compensation of exothermic and endothermic reactions

-Unsurpassed power and efficiency

-Heating capacity up to 36 kW

-Ambient temperature range +5 °C to +40 °C

-Space optimized design creates more room directly next to the units

-Integrated 5.7" industrial color touchscreen displays all essential information and enables simple fingertip control

-Extensive warning, protection, and monitoring functions with detailed self-explanatory messages

-ICC cascade control for extraordinary precision, temperature stability ±0.05 °C & ±0.2 °C

-Integrated programmer with real-time clock

-Filling level indicator and pump capacity displayed electronically

-Powerful circulating pumps, electronically adjustable in stages or by setting the pressure value

-Interface for SD memory card

-Connections for USB, Ethernet, RS232, and Alarm output

-Optional analog connections, RS485, Profibus DP, Modbus



Technical Data

Category: Temperature Control PRESTO

Working temperature range (°C): -91 ... +250

Temperature control: ICC

Temperature stability (°C): ±0.05 ... ±0.2

Setting / display resolution: 0.01 °C

Integrated programmer: 8x60 steps

Temperature Display: TFT Touchscreen

Heating capacity (kW): 24

Cooling capacity (Medium Ethanol):

°C 200 100 20 0 -20 -40 -60 -80

kW 11 11 11 10 9.5 9 6.5 1.5

Pump capacity flow rate (l/min): 26 ... 80

Pump capacity flow pressure (bar): 0.5 ... 3.0

Pump connections: M38x1.5

Refrigerant: R23, R404a

External Pt100 sensor connection: integrated

Digital interfaces: RS232, Optional Profibus, SD memory card, USB, Ethernet, Modbus, Alarm-out, Optional RS485

Ambient temperature: 5 ... 40 °C

Dimensions W x L x H (cm): 95 x 127 x 190

Weight (kg): 780

Sound pressure level (distance 1 m) max. (dBA): 74

Viscosity max. (cSt): 50

Process volume min. (active heat exchanger volume) liters: 28 (16)

Internal usable expansion vol. (liters): 40

Classification according to DIN12876-1: Classification III (FL)

Analog connection input / output: Optional

Description: All data refers to the nominal voltage of 400 V, 3-phase, nominal frequency of 50 Hz and ambient temperature of +20 °C. Cooling capacity measured at max. pump stage. All pump data refers to a bath fluid with a specific density of 1 kg/dm³.

Cooling of compressor: 2-stage Water

Cooling water connection: G ¾" male with barbed fittings for tubing ½" lD

Cooling water consumption (l/min): 16&43

Cooling water differential pressure (bar): 0.5



(r.230516)