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SDAP Nomad Dryer with AP1 Control
Reference Manual (PN: 882.00281.00) for
Complete Operation and Installation Instructions
(Available online at www.sterlco.com)
Sterling Part No: 682.92636.03
2900 S. 160
th
Street • New Berlin, WI 53151 USA Bulletin No: DH1-315.02
Tel. 262.641.8610 • Fax 262.641.8653
Spare Parts List
Model Filter
Desiccant
Replacement Beads
Regeneration
Thermocouple
Process
Thermocouple
Gasket
SDAP
25/50/100
Standard
Temperature
– Part # W00052474
High Temperature –
Part # 161.00194.00
13 X Beads – Part #
W00018051
25 ONLY – 96” Long
– Part # A0568474
50/100 ONLY – 96”
Long
– Part # A0543758
15’ Long (Braided Design)
– Part # A0568466
72” Long (Braided Design)
– Part # A0568473
Standard and
High
Temperature
– Part #
A0566839
Troubleshooting - Quick Guide
Alarm Message Cause Corrective Action Dryer Status
Make sure the process air filter is clean. Clean or replace if
necessary.
Make sure all the hose connections and all the components of
the dryer have proper seals on them (i.e. desiccant tanks, heater
box, filters, after-cooler). Tighten the connections and replace
any damaged seals.
Make sure the regeneration timing cycle matches the specs. If
not, contact the Service Department.
High Dew Point
The dew point
reading has
exceeded the
dew point alarm
set point.
Desiccant may be contaminated and blocking the air flow. Check
desiccant, replace if necessary.
Dryer Normal:
- Process blower ON.
- Process heaters ON.
- Regen heaters ON.
- Alarm Message ON.
- Alarm horn is OFF.
Make sure the process filter is clean. Clean or replace if
necessary.
Double check the alarm set point is at 35° F.
Check the positioning of the thermocouple inside the air inlet of
the drying hopper. The tip of the thermocouple should be
centered in the tube, and not touching any metal part of the tube.
The drying temperature set point is lower than dryer capabilities.
Check the dryer specs.
Make sure all the hose connections are tight.
Process High
Temp
The process
temperature
has exceeded
the alarm set
point.
Make sure the regeneration timing cycle matches the specs. If
not, contact Service department.
Dryer Shuts Down:
- Process blower OFF.
- Process heaters OFF.
- Regen heaters OFF.
- Alarm light is ON.
- Alarm horn is ON.
Valve Positioning
Fault
The limit switch
on the valve
may not have
been wired
correctly.
The switch is indicating the incorrect desiccant tank is in
regeneration. Check the wiring of the switch against the wiring
diagram. Make sure all the wire connections are tight.
Limit switch may be out of position. Re-adjust the switch so it
trips when it is at the high position, and avoids touching the cam
when it is at the low position.
Valve Motor
Override
The valve has
made enough
rotations and
the correct
position of the
valve was not
detected.
Limit switch may be faulty. Replace the switch and make sure
the wires are connected correctly.
Dryer Shuts Down:
- Process blower OFF.
- Process heaters OFF.
- Regen heaters OFF.
- Alarm light is ON.
- Alarm horn is ON.
Note: Refer to the main manual and wiring diagram for a complete Spare Parts List