Troubleshooting Guide - Haskel AAD-5 Betriebs- Und Wartungsanleitungen

8. With screwdriver, gently remove both o-rings and rod bearings in pump section.
9. Inspect, replace and install all internal parts in air drive section and pump section per drawing
17711.
10. Relubricate air barrel with 50866 Haskel lubricant.
11. Reassemble pump in reverse order of disassembly instructions. Care must be taken in
disassembly and assembly that the flow and pilot tube o-rings be on the flow and pilot tubes prior
to assembly. Alternately (cross-wise) torque tie rods to a maximum torque of 16-18 foot pounds.
*NOTE: Eliminate steps 7 and 8 if no leakage through purge/vent port has occurred. Inspection and
replacement of o-ring and rod bearings should not be necessary.
Check Valves
Remove and inspect parts (Ref. dwg. 17711). Replace 28119 seats if damaged.

Troubleshooting Guide

Symptom
1. Will not run at low air drive
pressures
(10 - 15 psi)
2. Pump will not cycle, or slow
cycling.
3. "False" or double cycling or
continuous exhaust bleeding.
4. Amplifier will not dead head
(stall)
5. Excessive moisture or liquid
outside of muffler.
6. Excessive leakage out vent
hole on top of pump section.
Air Driven Air Amplifiers, AAD-5 & AAD-5-C • OM-11F
Cause
1. Excess friction of spool o-
rings 568017.
1. Leakage of flow and/or pilot
tubes.
2. "Iced up" exhaust vent.
3. Indication that one or both
pilot valves are
malfunctioning.
4. Build-up of residue in
muffler.
1. Small inlet air supply piping
magnifies any internal
leakage.
1. Check valves contaminated
or damaged.
1. Air filter full of water.
1. Piston rod seal leakage.
6
Remedy
1. Necessitates relubrication or
replacement of spool o-
rings. (See instruction for
removing spool in Figure 2,
steps 1, 2, 3.)
1. Replace o-rings on flow pilot
tubes.
2. Remove ice.
3. Remove pilot valves, inspect
and repair per instructions in
maintenance section.
4. Remove muffler,
disassemble and clean.
1. Increase air inlet piping and
replace o-rings in the
following order (test each
step):
a. No. 568015 o-ring
inside hex exhaust port
fitting.
b. Spool o-rings No.
568017.
c. Sleeve o-rings No.
568020. (See
instructions for removing
and replacing o-rings.)
1. Remove, inspect, clean or
replace check valve parts as
necessary.
1. Drain air filter.
1. Replace rod seals. (Ref.
dwg. 17711.