Specifications
22
Electrical Resistance Heater Rods:
Type 460/380V, 60/50 Hz, 3 Phase
Number 6
Watts (Each) 680 Watts @ 460V, 60 Hz
Current Draw (Amps)
5 amps total @ 460V across each phase at heater
contractor
Control Circuit Voltage:
29 Vac @ 60 Hz
24 Vac @ 50 Hz
Evaporator Overheat Switch:
Opens 54 ± 3 C (130 ± 5 F)
Closes 38 ± 4.5 C (100 ± 8 F)
Electrical System (Continued)
Refrigeration System
Compressor:
Model No.: ZM18K4E-TFD-276, Scroll
Refrigerant Charge:
CSR20SL 3.3 Kg (7.3 lb.) R-404A
CSR40SL 3.4 Kg (7.5 lb.) R-404A
CSR40 3.4 Kg (7.5 lb.) R-404A
Water-Cooled Condenser-Receiver Tank (Option) 1.0 Kg (2.2 lb.) Additional R-404A
Compressor Oil Capacity 1.77 liter (60 oz.)*
Compressor Oil Type: Polyol Ester Based Type (required), (refer to Tool Catalog)**
High Pressure Cutout Switch:
Cutout 3243 ± 48 kPa, 32.43 ± 0.48 bar, 470 ± 7 psig
Cutin 2588 ± 262 kPa, 25.88 ± 2.62 bar, 375 ± 38 psig
Low Pressure Cutout Switch:
Cutout
-17 to -37 kPa, -0.17 to -0.37 bar, 5 to 11 in. Hg vacuum
(Before 1/2001: +21 to -20 kPa, +0.21 to -0.20 bar,
3 psig to 6” Hg vacuum)
Cutin
28 to 48 kPa, 0.28 to 0.48 bar, 4 to 7 psig
(Before 1/2001: 48 to 90 kPa, 0.48 to 0.90 bar, 7 to 13 psig)
High Pressure Relief Valve:
Relief Pressure
3447 +520/-104 kPa, 34.47 +5.20/-1.04 bar,
500 +75/-15 psig
Reset 2758 kPa, 27.58 bar, 400 psig
Liquid Injection Control:
Modulation Cool or Power Limit
Liquid injection valve opens continuously when cooling
capacity is 91% or less. Valve closes when cooling capacity
is 90% or more.
Compressor Discharge Temperature Control:
Liquid Injection Valve Energizes (Opens) 128 to 138 C (262 to 280 F)
Liquid Injection Valve De-energizes (Closes)
6 C (10.7 F) below energize temperature
(122 to 132 C [270 to 123 F])
Compressor Shutdown (Auto Reset) 148 C (298 F)
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