Tweco Pak 200 - Manual (Page 57)

Manual 0-5057 5-3 MAINTENANCE
MAINTENANCE PAK 200
5.03 Arc Starter Service
Arc Starter Service Chart
Symptom Cause Check Remedy
No Pilot Ignition:
Spark in Arc Starter,
but not ignition
Coolant has become con-
ductive Use conductivity meter Flush system, replace cool-
ant.
Pilot return wire not con-
nected Visual inspection Connect wire.
Spark gap set too close Check with feeler gauge Set to 0.063” ±0.002”
High frequency cap (CA)
Possibly open Use capacitance meter Reconnect or replace.
Broken or missing ferrites Visual inspection Replace.
Short across in indicator
(L1) Visual inspection Remove short, increase
coil gaps.
Spark gap bus caps (C1,
C2, C3) broken or defective Capacitance meter Replace.
Negative supply not con-
nected correctly Visual inspection Reconnect.
No Pilot Ignition:
No Spark in Arc
Starter
Spark gap set too large Check with feeler gauge Set to 0.063” ±0.002”
Faulty transformer Resistance measurement Replace.
No 120V supply Check input voltage at EMI
fi lter Make connections; replace
harness.
No / loose connection to
spark gap Visual inspection Reconnect.
Faulty EMI fi lter Voltage / Resistor mea-
surement Replace.
No cooling or
insuffi cient cooling:
Leaks coolant
Loose fi tting(s) Visual inspection Tighten fi ttings.
Failure to braze joints (L1) Visual inspection Replace HF Coil
Damaged or punctured
coolant line(s) Visual inspection Replace coolant line(s).
No cooling or
insuffi cient cooling:
No Coolant Flow
Supply & return hoses
reversed Visual inspection 0 color-
coded connections Match coolant connection
colors to ark starter fi ttings
colors.
Blockage in coil or supply
return hoses Loosen fi tting slightly and
check for coolant fl ow Flush system.
Erratic System
Behavior
(EMI Interference)
Shield Drain / Torch lead in-
ner shield connector miss-
ing or loose Visual inspection of lead
attachment to Arc Starter Reconnect / tighten lead
connections.
Missing or loose ground
connection Visual inspection of ground
wire to Arc Starter Make or tighten connec-
tions to good ground.
Cap C5 not connected, pen
or loose Visual inspection capacitor
measurement Replace PCB.
Table 5-3: Arc Starter Service Chart