Sullair ES-8 - Normal Operating Conditions

Section 8
DRYER OPERATION
30
psig (4.0 to 4.1 bar), immediatelytake corrective
action utilizing the dryer troubleshooting section
of this manual.
3.Opentheairshutoffvalveslowly andapplyloadto
the compressor/dryer. Check the suction pres-
sure,headpressure,sightglassa ndmoisturein-
dicator for normal operating conditions as
shown in Section 8.5 of this manual.
8.5 NORMAL OPERATING CONDITIONS
After the compressor/dryer has been started under
rated load, let the compressor/dryer run for at least
15 minutes to allow stabilization of the system.
The gauge readings should be as follows:
REFRIGERANT SUCTION PRESSURE
R---22fullyloadedis65psig(4.5bar)andunloaded
is 58 psig (4.0 bar).
NOTE
Add1psig(0.7bar)tothe minimumallowablesuc-
tionpressuresreferredtoinmanualforeach2,000
ft. (610m) elevation above sea level.
REFRIGERANT HEAD PRESSURE
Totheambienttemperatureadd25_Fto30_F(15_C
to18_C)thenconverttopressureusingtheTemper-
ature Pressure Chart (Figure 8 --- 1). For proper com -
pressor/dryer operation, the minimum discharge
head pressure required is 170 psig (11.7 bar).
NOTE
If compressor is run without dryer being started,
the compressor will deliver compressed air
through the dryer without any drying being
achieved.
Figure 8---1 Temperature Pressure Chart
Temperature (psig/bar) Temperature (psig/bar)
(_F/_C) R --- 22 (_F/_C) R --- 22
20/---7 43/3.0 70/21 121/8.3
22/---6 45/3.1 75/24 132/9.1
24/---4 48/3.3 80/27 144/9.9
26/---3 50/3.5 85/29 156/10.8
28/---2 52/3.6 90/32 168/11.6
30/---1 55/3.8 95/35 182/12.6
32/0 58/4.0 100/38 195/13.4
34/1 60/4.1 105/41 211/14.6
36/2 63/4.4 110/43 226/15.6
38/3 66/4.6 115/46 243/16.8
40/4 69/4.8 120/49 260/17.9
45/7 76/5.2 125/52 278/19.1
50/10 84/5.8 130/54 297/20.5
55/13 93/6.4 140/60 337/23.2
60/16 102/7.0 150/66 381/26.3
65/18 111/7.7 160/71 430/29.7