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3.0 Maintenance
3.1 Condenser coil—
Clean off accumulated dust and dirt monthly or as
necessary in dirty environments.
3.2 Moisture separator/Filter and optional Oil
Removal Filter—
Replace filter element when pressure drop across
dryer is excessive or annually.
3.3 Check separator daily to be sure automatic
drain is discharging.
3.4 Replace or rebuild drain mechanism annually.
To facilitate service, maintenance kits are available.
Please refer to page 11.
Bowl
O-Ring
(ONLY with I-Controller Level 2)
6
Separator Element
or Optional Oil Removal
Element
Wave Spring
Pneumatic Pilot
Operated Drain
Tube
Timer Drain Valve
Sizing
Determining dryer capacity at actual operating
conditions
To determine the maximum inlet flow capacity of a dryer
at various operating conditions, multiply the rated
capacity from Table 1 by the multipliers shown in Table 2.
Example: How many scfm can an air-cooled model
RPD100 handle when compressed air to be dried is at 80
psig and 90°F; ambient air temperature is 80°F; and a
38°F dew point temperature is desired?
Answer: 100 x 1.17 x 1.12 x 1.0 = 131 scfm.
TABLE 1
Rated capacity (scfm) and pressure drop @ 100 psig inlet
pressure, 100°F inlet temperature, and 100°F ambient
temperature
MODEL
60 Hz
Rated capacity of
50 Hz
air-cooled models (scfm)
TABLE 2
Air capacity correction factors (Multipliers)
INLET COMPRESSED AIR CONDITIONS
INLET
°
PRESSURES
80
F
°
psig
kgf/cm
27
C
2
50
3.5
1.35
80
5.6
1.50
100
7.0
1.55
125
8.8
1.63
150
10.5
1.70
175
12.3
1.75
200
14.0
1.80
COOLING MEDIUM*
AMBIENT
TEMPERATURE
MULTIPLIER
°
°
F
C
80
27
1.12
90
32
1.06
100
38
1.00
110
43
0.94
*Air-cooled models
25
35
50
75
25
35
50
75
21
29
42
63
INLET TEMPERATURES
°
°
°
90
F
100
F
110
F
°
°
°
32
C
38
C
43
C
1.05
0.84
0.69
1.17
0.95
0.79
1.23
1.00
0.82
1.31
1.07
0.91
1.37
1.13
0.95
1.42
1.18
0.99
1.47
1.22
1.03
OUTLET DEWPOINT
DEW POINT
TEMPERATURE
MULTIPLIER
°
°
F
C
38
3
40
4
45
7
50
10
100
100
84
1.0
1.1
1.2
1.3
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