Van Air Systems D8 - Manual (Page 7)

PAGE 7
SECTION 5 REPLACEMENT PARTS
PART NO.
26-0104
29-0150
14-0450
12-0520
33-0313
33-0311
33-0205
33-0232
14-2213
14-2188
26-10264
D4
QTY
1
1
1
1
1
1
1
1
1
1
1
D8
QTY
1
1
1
1
1
1
1
1
1
1
1
ITEM
1
2
3
4
5
6
7
8
DESCRIPTION
Sight Window
Pressure gauge (0-200 PSIG) only
Manual Drain Valve 1/2" NPT
Close nipple 1/2" NPT
DESICCANT
DRY-O-LITE Desiccant, 50 LB PAIL
DRY-O-LITE Desiccant, 50 LB BAG
SP Desiccant, 50 LB BAG
10BF Desiccant, 25 LB PAIL
Pressure Relief Valve (not shown)
Fill Port
O-Ring
SECTION 6 TROUBLESHOOTING
1. DECREASED PERFORMANCE OR INCREASED
DESICCANT USAGE.
High inlet air temperatures.
Check the aftercooler performance. Make sure that the
aftercooler was properly sized and installed. Check the aftercooler
operation manual for further details.
If an aftercooler was not installed, one may be required.
Check the compressor capacity or air usage vs. the dryer rating.
Was a different compressor installed?
High ambient temperatures.
Check the location of the dryer for changes in ambient tempera-
tures.
Was the dryer moved to a different location?
Was a piece of equipment or piping installed near the dryer that
caused an increase in ambient temperatures? Relocate the dryer
or equipment if possible. If relocation is not possible, correct the
ambient temperature.
Dryer overloaded.
Check the flow through the dryer. Check the flow at peak usage
periods. Have the flow requirements of the system increased?
Was the dryer properly sized for the actual operating conditions?
Check the capacity of the dryer for the system conditions. If the
system requirements exceed the dryer's capability, a larger dryer
must be installed.
Desiccant bed below required level.
Check the desiccant bed level. The level should be checked at
least once a month. The usage of desiccant will vary with the
operating conditions and the type of desicccant being used. The
dryer will require more desiccant during the warmer months of the
year.
Desiccant quantities and filling procedures are outlined in Section
4.4 of this manual.
2. LIQUID DOWNSTREAM OF THE DRYER.
Improper draining. The dryer may be flooded.
The dryer must be drained at least once for every 8 hours of
operation.
Check the drain valve(s) and piping for clogs. Repair or replace
faulty valves. If the piping is clogged, it must be cleared.
If the dryer is installed outdoors where ambient temperatures fall
below freezing, the drain line and valve(s) may freeze. If ambient
temperatures fall below freezing, the drain line can be wrapped
with heat tracing and/or insulation to prevent freezing.
If maintaining the required draining schedule is a problem, an
automatic ball type drain valve should be installed. Reference
Section 2.2-E in this manual for installation instructions.
IMPORTANT: Never install a float type (other than Van Air model
PDV-500) or solenoid type drain valve on this dryer.