PROBLEM
VISUAL INDICATION PROBABLE
CHECK
REMEDY
CAUSE
Poor
Moisture content
Inlet temperature
Check inlet
Reduce inlet
Dewpoint.
indicator (amber).
too high.
temperature.
temperature.
Contaminated
Check desiccant.
Replace desiccant
desiccant.
and eliminate
source of
contamination.
Hygrometer (if fitted).
As above.
Check fuses and
Replace fuses,
calibration of
re-calibrate and
hygrometer.
if necessary
replace.
High
Pressure gauges.
Excessive outlet
Check outlet flow.
Regulate.
pressure
flow.
drop.
Differential pressure
Blocked filter.
Filter element.
Replace filter.
indicator in red.
Failure to
No depressurisation.
No signal to
Check signal line.
Replace signal
purge.
exhaust valve.
line if necessary.
Loss of dewpoint.
Purge air orifice
Check for purge
Reset purge air
closed.
air.
to suit air
demand.
Exhaust silencer
Check condition
Replace if
blocked.
of silencer.
blocked.
Excessive
Cables overheating or
Excessive purge
Check purge flow
Regulate purge
Power
overloading
flow.
with rotometer.
flow accordingly.
Consumption
and tripping.
(Heat
Regenerative
models only).
36
G) Fault
Finding
Summary of Contents for PNEUDRI DH Series
Page 2: ......
Page 17: ...15 FIGURE 1 TYPICAL HEATLESS DRYER CUTAWAY 1 9 10 11 12 8 3 7 2 6 4 5 CONSTRUCTION...
Page 18: ...16 FIGURE 2 TYPICAL HEAT REGENERATIVE CUTAWAY 1 9 10 11 12 8 3 7 2 6 13 4 5 CONSTRUCTION...
Page 19: ...17 FIGURE 3 HEATLESS CONTROL ELECTRIC CAM SCHEMATIC...
Page 20: ...18 FIGURE 4 HEATLESS CONTROL PNEUMATIC CAM SCHEMATIC...
Page 21: ...19 FIGURE 5 HEAT REGENERATIVE CONTROL SCHEMATIC...
Page 22: ...20 FIGURE 6 PURGE EXHAUST AIR DRAINAGE...
Page 47: ...45 ABBILDUNG 1 SCHNITTBILD KALTREGENERIERTER TROCKNER 1 9 10 11 12 8 3 7 2 6 4 KONSTRUKTION 5...
Page 48: ...46 ABBILDUNG 2 SCHNITTBILD WARMREGENERIERTER KONSTRUKTION 1 9 10 11 12 8 3 7 2 6 13 4 5...
Page 49: ...47 ABBILDUNG 3 SCHALTPLAN DES ELEKTRISCHEN CAM TIMERS KALTREGENERIERTER TROCKNER...
Page 50: ...48 ABBILDUNG 4 SCHALTPLAN DES PNEUMATISCHEN CAM TIMERS KALTREGENERIERTER TROCKNER...
Page 51: ...49 ABBILDUNG 5 SCHALTPLAN WARMREGENERIERETER TROCKNER...
Page 52: ...50 ABBILDUNG 6 ABLASSLEITUNG F R SP LLUFT ABLUFT...
Page 78: ...76 FIGURE 1 SECHEUR A REGENERATION SANS CHALEUR CONSTRUCTION 1 9 10 11 12 8 3 7 2 6 4 5...
Page 79: ...77 FIGURE 2 SECHEUR A REGENERATION THERMIQUE CONSTRUCTION 1 9 10 11 12 8 3 7 2 6 13 4 5...
Page 80: ...78 FIGURE 3 SCHEMA DU CIRCUIT DE REGULATION SANS CHALEUR PROGRAMMATEUR ELECTRIQUE...
Page 81: ...79 FIGURE 4 SCHEMA DU CIRCUIT DE REGULATION SANS CHALEUR PROGRAMMATEUR PNEUMATIQUE...
Page 82: ...FIGURE 5 SCHEMA DU CIRCUIT DE REGULATION A REGENERATION THERMIQUE 80...
Page 83: ...FIGURE 6 VIDANGE D AIR DE PURGE ECHAPPEMENT 81...
Page 108: ...106 FIGURA 1 SIN CALOR 1 9 10 11 12 8 3 7 2 6 4 5 CONSTRUCCI N...
Page 109: ...107 FIGURA 2 REGENERACI N POR CALOR 1 9 10 11 12 8 3 7 2 6 13 4 5 CONSTRUCCI N...
Page 110: ...108 FIGURA 3 ESQUEMA DE LEVA EL CTRICA DE CONTROL SIN CALOR...
Page 111: ...109 FIGURA 4 ESQUEMA DE LEVA NEUM TICA DE CONTROL SIN CALOR...
Page 112: ...110 FIGURA 5 ESQUEMA DE CONTROL DE REGENERACI N POR CALOR...
Page 113: ...111 FIGURA 6 PURGA ESCAPE DESCARGA DE AIRE...
Page 136: ......
