Troubleshooting Guide

15 | Page
WORKSHEET:
Dehumidifier Capacity = (Inlet Air Moisture Content – Outlet Air Moisture Content) * Airflow
______ppd = (______ ppd/CFM – ______ppd/CFM)*_______CFM
Performance should be within about 20% of the capacity listed on the previous page.
40% RH
45% RH
50% RH
55% RH
60% RH
65% RH
70% RH
0.65
0.75
0.85
0.95
1.05
1.15
1.25
1.35
1.45
1.55
1.65
60 65 70 75 80 85
Inlet Air Moisture (ppd/CFM)
Inlet Air Temperature (°F)
Graph 1
Moisture Into Dehumidifier
Table 1 Table 2
Model 1830
Model 1850
Static
Pressure
(“w.c.)
Airflow
(CFM)
Static
Pressure
(“w.c.)
Airflow
(CFM)
0.0
160
0.0
245
0.1
140
0.1
230
0.2
120
0.2
215
0.3
100
0.3
200
Inlet Air Temperature = ______°F
Inlet Air %RH = ______%
Inlet Air Moisture Content (Graph 1) =
______ppd/CFM
Measured Static Pressure = ______”w.c.
Airflow From Table 1 or 2 = ______CFM
10%
15%
20%
25%
30%
35%
40%
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
75 80 85 90 95 100 105 110 115
Outlet Air Moisture (ppd/CFM)
Outlet Air Temperature (°F)
Graph 2
Moisture Discharged by Dehumidifier
Measured Outlet Temperature =
_______°F
Measured Outlet %RH = _______%
Outlet Air Moisture Content (Graph 2) =
_______ppd/CFM