Wolf ATEX TURBOLITE Series Operation And Maintenance Instructions page 9

Operating Instructions
Wolf ATEX Turbolite operating pressure is 5 – 8 bar (70 to 120 psi).
Ideal running and setting pressure, 5.5 bar (80 psi)
The pressure regulator on the lamp compensates for fluctuations in airline
pressures. Every Turbolite Airlamp, as supplied, can be connected to a
hose, a 3 ⁄ " BSP male thread, or a 3 ⁄
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clearance). The A-TL45A/B is supplied with a matt reflector as standard, a
polished reflector can be fitted on request.
Warning:
• Pressurised enclosure, inspect lamp in accordance with these instructions
before operation. Stand clear when in use.
• Dirt or moisture from unfiltered air will deposit on the inside of the glass,
reducing light output.
• All maintenance to be carried out in the safe area,
• Before dismantling the lamp shut off air supply and wait two minutes.
• Do not cover or obscure light transmitting parts.
Inspection and Maintenance
• ATEX Turbolites are available with Aluminium – A, or Brass – B construction.
Do not mix cast components.
• A damaged airlamp should be withdrawn and repaired in accordance with these
instructions, by trained/qualified personnel.
• Airlamps should be inspected, cleaned and tested every three months
for regular use, otherwise after every 1000 hours of use. Refer to
IEC 60079-17:1996 for guidance on inspection and maintenance.
• The use and/or improper fitting of spare parts will invalidate product certification
and the manufacturer's guarantee and responsibility and may cause an unsafe
condition. If in doubt contact the Company.
Head Removal and Bulb/Bulb Holder Replacement (fig. 1 & 1a)
To gain access to the bulb, release the lock screw (A-74), and unscrew the
reflector head/locking dome from the generator (A-226/A-223).
The 24v 250watt tungsten halogen bi pin capsule bulb (A-129/A-159, type GY6.35)
should be handled with care, the pins and pinch are fragile. When the bulb blows
the airlamp should be switched off immediately and removed from service for bulb
replacement. A glass tube (A-908) with bayonet clip is fitted over the bulb to
improve bulb life and reduce contamination. To remove, lift one spring clip and
rotate the tube clockwise. The bulbholder can be removed by unscrewing the lock
nuts (A-872) holding the bulbholder terminals (fig. 1a). On inspection check these
nuts are secure to ensure a reliable electrical contact and pressure seal on the
insulating bush (A-52).
When re-assembling the ATEX Turbolite, ensure the head is screwed down far
enough over the 'O' ring (A-77) or grooved rubber washer
(A-158) on the generator to seal the pressurised enclosure, and then lock the
enclosure with the lock screw (A-74).
Removal and replacement of the ball glass, A-TL44A/B (fig. 1)
See head removal. Inspect ball glass (A-19), do not use if damaged.
Removal and replacement of the glass disc, A-TL45A/B (fig. 1 & 2)
Remove 6 x fastening screws (A-18) retaining the lens ring to gain access to
the glass disc (A-140) for cleaning or replacement. Inspect the glass disc, do not
use if damaged. The fastening screws are of a special high tensile stainless steel
specification. IMPORTANT, the strength of these screws is safety critical, only
use specified spare parts. Incorrect fastening of these screws can cause:
• The toughened glass disc to shatter
• The grooved rubber seal to become damaged
• Weakening of the fastening screws.
• Stripping of the threads in the reflector head
" BSP female thread (with limited internal
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Inspection and replacement of generator sealed bearings (fig. 1 & 1b)
To remove the generator housing cover (A-216/A-212), remove 3 x fastening
screws (A-18), the assembled rotor is fitted to the housing cover. Do not prise the
housing cover off, attraction of the magnet will resist removal. Disassemble the
components from the rotor shaft to get access to the bearing retaining ring (A-868)
1 ⁄ " bore
and 3 x bearing retaining ring screws (A-873), which allow the rotor shaft with
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sealed bearing to be removed from the housing cover.
Before reassembly make sure that no small ferrous objects have been attracted to
the magnet. When replacing the rotor shaft assembly the magnet will be strongly
attracted to the stator. Ensure the sealed bearing locates correctly into the
generator housing; avoid finger traps between the generator housing and the
housing cover.
Assembly is the reverse of the above; check correct orientation of all components.
Thread lock (e.g. Loctite 270) should be applied to the bearing retaining ring
screws. Sealed bearings and waved spring washers must be replaced as a set (i.e.
2 x A-862 and 2 x A-867). Never re use the circlip (A-861). On inspection and assembly
always check the nut for rotor shaft (A-875) is secure, retain with thread lock
Regulator Assembly (fig. 1)
The regulator adjusts the output voltage of the generator. All the regulator parts
are correctly aligned and secured by the locking ring (A-870). Do not disturb the
regulator unless it ceases to function correctly. If replacement or cleaning of any
parts is necessary, check the fabric and beaded rim of the diaphragm (A-115) for
deterioration.
Before re-assembly of the regulator, the lockscrew (A-116) with collar (A-98), lock
nut (A-28) and regulating screw (A-29) must be removed from the opposite end
of the regulator piston chamber. The regulating screw (A-29) and lock nut (A-28)
should then be loosely fitted just inside the end of the piston chamber, ready for
resetting the pressure regulator.
Setting Generator Voltage (fig. 3)
A setting and testing device is required (A-880) to set or check the generator
voltage. Fit to the generator, connect the two wires to the connecting studs for
bulbholder (A-871), ensure the wires are not touching the glass tube. Fit the
reflector head/ball glass and locking dome, including 'O' ring (A-77). Using the
pressure regulator key set (A-68), release the lock nut (A-28), adjust the regulating
screw (A-29). When required voltage of 23.5 volts is reached turn the air supply
on/off three times to ensure regulator setting is stable.
Use of the Silencer and Remote Exhaust (fig. 4)
• For standard use in gas atmospheres follow fig. 4a.
• To operate with reduced noise levels in gas atmospheres follow fig. 4b.
• For dust atmospheres follow fig 4c. Hose must exhaust in a safe area.
Exhaust hose must be anti-static to BS2050.
minimal loss of performance. Ensure piped exhaust does not cause a hazard.
The Wolf Safety Lamp Co. Ltd has a policy of continuous product improvement.
Changes in design may be made without prior notice.
3 ⁄ " (18mm) bore hose will result in
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