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8. TROUBLESHOOTING
PROBLEM
Insufficient penetration or excessive scoria
settlement.
Interruption of cutting arc.
The torch is cutting at tilt when you wish it to
be perpendicular.
Excessive wear of nozzle and electrode.
9. RATINGS PLATE SYMBOLS
Detailed technical data relative to the performance of the machine is located on the back panel plate. Please note that the ratings plate shown below is an
example only intended to assist with the explanations of symbols. To determine the correct technical values of the machine in your possession, you must
refer to the data plate.
1
The EUROPEAN standard relating to safety and the
construction of plasma cutting machines.
2
Symbol of the main internal parts of the cutter : i.e.
frequency converter (inverter) - transformer - rectifier.
3
Symbol for the cutting current characteristic :
drooping characteristic = constant current.
4
Symbol of plasma cutting procedure.
5
Mains symbol : AC - single-phase supply.
6
Thermal class of insulation material: H=180C.
7
Cooling method: AF forced air (fan).
8
Case protection grade: IP22. Standard governing the
required protection from water ingress and isolation
of internal parts from persons and objects.
10
PERFORMANCE OF THE PLASMA CUTTER CIRCUIT:
UO :
Maximum voltage with no-load peak (welding circuit open)
12/U2 :
Current and corresponding voltage are normal [ U2=(20+0.0412) V ]
and may be supplied from the machine during cutting.
X :
Intermittent cutting ratio: Indicates time during which machine can
supply the corresponding current (same column). This is expressed
in % on the basis of a 10min. cycle (e.g. 60% = 6 min of work, 4 min.
break and so on).
A/V-A/V : Indicates the regulation range of the cutting current (maximum -
minimum) at the corresponding arc voltage.
Declaration of Conformity We, the sole importer into the UK, declare that the product listed below is in conformity with the following EEC
standards and directives.
PLASMA CUTTER Model: PP40.V3
73.23/EEC
Low Voltage Directive (S.I. 1994/3260)
89/336/EEC
EMC Directive (S.I. 1992/2372 & Amendments).
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: No liability is accepted for incorrect use of this equipment
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION: Call us for a copy of our latest catalogue on 01284 757525 and leave your full name and address including your postcode.
POSSIBLE CAUSE
Too high a cutting speed.
Torch is too tilted.
Workpiece is too thick.
Electrode and nozzle are worn out.
Cutting speed too low.
Excessive distance between torch and workpiece.
Electrode is worn out.
Intervention of the protections system.
Torch position not correct.
Asymmetric wear of nozzle hole and/or wrong assembly
of torch parts.
Air pressure too low.
Contaminated air (humidity-oil).
Excessive pilot arc ignitions in the air.
Nozzle holder damaged.
The construction file for this product is held by the Manufacturer and may
be inspected on request by contacting Jack Sealey Ltd
Signed by Mark Sweetman
For Jack Sealey Ltd. Sole importer into the UK of Sealey Power Welders
Sole UK Distributor
Sealey Group,
Bury St. Edmunds, Suffolk.
REMEDY
(Numbers refer to chapter and item heading)
Slow the cutting speed
Adjust the torch tilt.
Confirm workpiece thickness, and re-check technical data.
Replace electrode and nozzle.
Increase cutting speed.
Decrease the distance between torch and workpiece.
Replace electrode and nozzle.
Check warning lights and take appropriate action.
Re-align the torch position.
Check assembly (see fig 9) and change nozzle if necessary.
Increase air pressure (see chapter 5).
Check air supply system (see chapters 4,5, & 7).
Do not casually turn the torch on and off.
Change the nozzle holder.
11
DATA REGARDING THE MAINS.
U1 :
Alternate current and supply frequency of the machine
allowed limits (+ 10-15%).
Value of delayed fuses for mains protection.
I1 :
current absorbed by mains at the corresponding current,
cutting voltage and relative intermittent ratio.
S1 :
Apparent mains power used during cutting at the
corresponding current/voltage.
cos j :
Power factor, real power of mains P1= (S1 cos j) kw.
01284 757500
e-mail
01284 703534
27th August 2002
sales@sealey.co.uk
www.sealey.co.uk
9A>
PP40.V3 - 4 -101103
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