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To Replace the Glass Disc and/or Reflector
The toughened glass disc and reflector are secured in the lens ring by the reflector retaining ring.
The battery retainer is ‘snap’ fitted in the lens ring, remove before unscrewing the reflector retaining ring.
All parts must be cleaned and the rubber washer centralised before re-assembly. A key is available for
fastening/unfastening this assembly.
To Replace Fuse and/or Reed Switch
The fuse contact must be removed to replace the fuse. To replace the reed switch, the battery contact and
fuse contact must be removed.
To Replace the Battery for the H-251 Mk2
The positive and negative diode leads are disconnected from their respective terminals and the battery
pack is removed from the body cavity.
The Battery
A Lead Acid cell system is used in all ‘Wolflite’ Safety Handlamps. A minimum of four hours continuous output
is provided for an average of 500 recharging cycles. A common battery pack is used for the H-251 Mk1 and
H-251 Mk2. For optimum performance and safety please observe the following:
• Charge before first use. Note: Dangerous Goods Regulations
• Avoid deep discharge. Hazardous Materials Regulations
• Recharge immediately when flat. Restricted Articles Regulations
• Recharge every six months when stored.
The US Dept. of Transport, IATA, and CAA declare these batteries are “not regulated”.
Warning: Do not short-circuit or incinerate Do not cut, crush or puncture
Do not recharge other than from Wolf Chargers Dispose of only via licensed disposal agency
Charging ‘Wolflite’ H-251 Mk1 Battery
To remove the battery for charging remove the lens ring (see “To Open the Lamp’’). The battery removal tab
is visible and can be used to aid extraction. WHILE THE BATTERY IS ON CHARGE THE LENS RING MUST
BE REPLACED TO PREVENT DUST ENTERING THE LAMP ENCLOSURE. If available, a spare charged
battery can be fitted.
The Battery is charged in a fully automatic charging unit. Indicators show when a battery has been fully
charged. AFTER USE, RE-CHARGE AS SOON AS POSSIBLE.
Charger Unit C-251 for H-251 Mk1
This ‘Wolflite’ Battery Charger is ‘CE’ marked as compliant with Low Voltage and EMC Directives.
Before connecting to the mains ensure the correct voltage is selected and the battery is in the charger, the
indicators will show the state of battery charge and charger mode. 90% capacity is achieved in 4/5 hours.
The charger indicators will suffer from electro-magnetic interference when sited less than five metres from
sources emitting at the following frequencies: 103-115MHz, 117-119MHz, 126-136MHz.
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