GRAL Bartłomiej Grynda | Asnyka 23 | 51-143 Wrocław | NIP 8950004034 | REGON 008043807
www.gralmarine.com | kontakt@gralmarine.com
MANUAL
UNDERWATER LIGHTING GRALmarine Vpro
THIS SET COMPRISES OF:
•two arms with integrated rechargeable Li- ION batteries and LED heads, with balls
•base with video / photo camera mounting screw, with clamp to mount the arms
•battery charger
Vpro:
➢is a lamp system used as the main lighting source for photo and video shooting during recreational and technical diving
➢construction:
•arm body made of surface anodized aluminium
•Batteries placed in the arms
•magnetic switches (without a pass through the housing) allowing switching three LEDs in each arm, by rotating the ring at the
lower part of each arm, the switches work in both ways, working in positions: off –3 LED –off
•base - the screw (in the set) allows fixing standard photo threads
•the whole set has a slightly negative buoyancy - several dozen grams, allowing easy handling underwater
➢Vpro, as the source of light, has three Cree XML-2 diodes per arm, with a color temperature of 5500 - 6000 K
➢requires 12 –16,8 V power supply, use of higher or lower voltage can damage the lamp head
➢tested to a depth of 150 meters, 300 meters on request
BATTERIES:
➢consist of Li-ION battery cells which feature small size and high capacity
➢has a low self-discharge level (approx. 4% / month)
➢has an electronic protection against: short circuit, overcharge and over-discharge (excessive discharge causes switching off of the
battery)
➢does not require full discharge before recharging
➢can be charged at any time and at any level of discharge
TERMS OF ARMS WITH BATTERY AND CHARGER USE:
➢store in a dry and ventilated location within a temperature range of -20°C to +50°C, keep away from excessive heat and humidity
➢the charger is designed for indoor use, in sheltered conditions, it should not be placed or used in conditions of excessive heat or
humidity, it should not be used with a damaged power cable
➢charging must always be within a temperature range of 0°C to +40°C
➢temperatures above +60°C may cause internal damage to the battery pack
➢after storage below 0°C it is necessary to acclimatize the battery pack at the minimum +10°C for 4 - 5 hours before use
➢charging a frozen battery may cause internal damage to the battery pack
➢discharging (usage) of the battery may take place within a temperature range of 0°C to +60°C
➢battery can be stored after charging to a level of 50 - 70% (longer storage of the discharged battery leads to its degradation)
➢when storing the battery, charge it at least once every six months
➢charge the battery only with the supplied charger
➢it is normal for the charger to become warm during use
➢always charge both arms at the same time
PREPARATION THE SET TO USE:
➢check the battery charge level before diving
➢make sure that both outputs are protected by blind plugs and adequately tightened
➢check whether both arms work properly by rotating the magnetic switch in lower part of the arms, remember not to leave them
turned on for more than few seconds on the surface
➢always have an alternative source of light (backup)
MAINTENANCE AFTER DIVING:
➢rinse the arms with fresh water
➢dry the set
➢the arms must be switched off upon storage and transportation, witch switches secured by attached screws, to prevent accidental
switching on
➢clean regularly
➢wipe the front surface of the arms with a soft, moist cloth; do not use alcohol-based detergents (these cause dulling and cracking of
the resin)
