Models 3940 and 3949 _________________________________________________________________________Spare Parts
7 - 1
Humidity
Control
±5% RH
Range
Above ambient to 95%
Sensor
Bulk polymer
Controller
Electronic, direct set in % RH
Setpoint
Digital
Display
Digital LED
Readability
1.0%
Setability
1.0%
Steam Gen. Initial fill approx. 1 quart (.95 liters)
Fittings
Fill Port
1/8” FPT
Drain Port
3/8” (1.9 cm) FPT
Unit Heat Load
115V
5500 BTUH (1600W)
220V
6000 BTUH (1750W)
Refrigeration
Compressor
1/4 Horsepower, air-cooled
Refrigerants
Non-CFC
Electrical
3940/4940
208-220V, 1 PH, 60Hz, 3P, 4W,
14.0 FLA
3949/4949
220-240V, 1 PH, 50/60Hz, 2P, 3W,
14 FLA
Line Cord
None (lockable disconnect provided)
Dimensions
Exterior
38.00”W x 87.50”H x 32.00”F-B
(96.52 cm x 222.25 cm x 81.28 cm)
Interior
31.00”W x 60.00”H x 27.00”F-B
(78.74 cm x 152.40 cm x 68.58 cm)
Continuing research and improvements may result in speci-
fication changes at any time. Performance plus or minus
the least significant digit unless otherwise specified.
* Better than ±0.5°C uniformity at all other temperature
parameters.
Section 7 - Spare Parts
Part No.
Description
Qty
290163
RTD Temperature Sensor
1
230066* Fuse, Ceramic 10A 350V
1
400051
Power Supply
1
290162
RH Sensor
1
231186
Controller, Watlow 982 Auto Tune
2
320277
Triac, 25A
2
285615* Fuse, Fusetron 25A
2
620430* Humidifier Heater
1
270010
Thermostat, B-10 0-220F
1
131300 Blower
Wheel
1
410048
Defrost Timer
1
630090 Heater
1
205062
Condensing Unit, 1/4 HP 115V R-134A 1
991334
Solenoid, 120V .101” Port
1
285599
Thermal Fuse, 250V 17A
1
830044
Blower Motor, 1/4 HP, 115V
1
*Immediate Stock