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"FAQ" and Product Information

FAQ's ArkPak 730

Q. How do I know if the battery is fully charged?
A. The % charge of battery value on the lower right hand side of the main data screen will read 100%.

Q. I have installed the battery correctly but the LCD screen reads “Alarm - open circuit”, what is wrong?
A. The battery is faulty or the 10A “main” fuse is blown, also check battery cables are firmly tightened to battery terminals.

Q. How can I tell what stage the charger is in?
A. The battery charging cycle is indicated on the lower left hand side of the main data screen.

Q. What does Ahr mean?
A. An “amp hour” (abbreviation Ahr) is a unit of electrical charge and refers to the battery’s capacity. A power source rated at one amp hour can deliver one amp continuously for one hour or two amps for half an hour or sixty amps for one minute etc.

Q. What type of batteries will the ArkPak charge?
A. The ArkPak AP730 can charge lithium iron phosphate batteries and most types of rechargeable 12V lead-acid type battery from 60 Ahr capacity up to 140Ahr. There are four main types of 12V lead acid battery - conventional wet lead-acid battery, calcium, AGM and gel. The ArkPak can charge both cold cranking type car batteries and deep cycle batteries.

Q. How do I know which battery type and Ahr rating to select?
A. Normally the battery type and Ahr rating is marked on the battery by the manufacturer. If you are not sure contact your battery retailer. It is very important that the correct battery type is selected since the charger uses a different charge technique for each battery type.

Q. Can I charge the battery using the external terminals or accessory sockets?
A. Yes you can as long as the main isolator switch is in the “on” position. This type of charging is not controlled by the on-board microprocessor since the charge current will flow direct to the battery via the main isolator switch. If an external voltage regulator is not used there is a risk of overcharging and damaging the battery. Please also consider the accessory sockets are fused at 10A so a current flow higher than this will blow the fuse.

Q. Can I leave the ArkPak continually plugged in?
A. Yes the ArkPak will go into float cycle.

Q. My AC adaptor gets hot when charging, is that okay?
A. Yes that is normal, it can reach 75°C.

Q. Can I charge the battery and power a device at the same time?
A. Yes, the ArkPak is designed to do this.

Q. Why doesn’t my ArkPak go into charge cycle?
A. AC adaptor could be blown and needs replacing.

Q. When I connect my laptop AC adaptor to the AC outlet an alarm sounds with two beeps, why is that?
A. For some laptop adaptors the in-rush current can trigger the alarm and the internal inverter will protect itself. The issue can be overcome by turning the Arkpak AC outlet on first (so green LED is lit), then turning on the laptop and finally connecting the laptop adaptor to the laptop and Arkpak AC outlet.

Q. My 240V outlet keeps blowing the 30A fuse, why is that?
A. The device you have plugged into the 240V outlet is unsuitable (could be too powerful) and has damaged the internal inverter.

Q. Can I install the ArkPak into my vehicle as part of a dual battery installation?
A. Yes you can however, you will need a dual battery wiring kit installed into your vehicle. We recommend you get this kit installed by a qualified auto electrician. You can connect the dual battery wiring loom to the ArkPak either via the external terminals or the Anderson socket. Please remember the main isolator switch must be in the “on” position. The ArkPak can be fixed into your vehicle using the accessory mounting kit (Part no. APB20B - not included). The ArkPak cannot be mounted into the vehicle’s engine bay.

Q. Can I charge the battery using solar panels?
A. Yes you can as long as the main isolator switch is in the “on” position. This type of charging is not controlled by the on-board microprocessor since the charge current will flow direct to the battery via the main isolator switch. If an external voltage regulator is not used there is a risk of overcharging and damaging the battery.

Q. Why is the time remaining value often different to the actual time taken?
A. The predicted time remaining value is an estimate only. The time prediction is affected by many variables such as temperature, battery age and battery type and it is impossible for it to be completely accurate but it is a useful guide.

Q. Is it possible for the ArkPak to power a device if it is turned off at the control panel?
A. Yes, it is, since the various output socket are connected direct to the battery via the main isolator switch and not via the smart charger. However it will not be possible to determine the battery voltage or the time remaining if this is done.

Q. Why doesn't my Arkpak go into charge cycle?
A. There are several possible reasons. If you are charging the battery and running a device at the same time the screen will show discharge cycle if the output current is higher than the charge input current. This is normal. Another reason could be the AC adaptor has failed. You can check the AC adaptor by trying to turn the screen on with the AC adaptor connected but the battery disconnected. If the screen won't turn on the AC adaptor is not working. A replacement can be sourced by contacting Ark Corporation. Another reason could be that the built-in charger PCB has failed. This is the case if the AC adaptor black box makes a faint beeping sound when you try to charge from mains power. Also the DC car lead will continuously blow the plug 10A fuse. In this case the Arkpak will need to be returned to Ark Corporation for repair.

Q. My 240V outlet keeps blowing the fuse, why is that?
A. The device you originally plugged into the 240V outlet is unsuitable (could be too powerful for the maximum rating) and has damaged the internal inverter. Another sign of a damaged inverter is that the fuse is OK but the over temperature alarm sounds as soon as you turn the inverter on. The inverter will need to be replaced.

Q. My Arkpak charges from 240V but not from the vehicle 12V cigarette socket, why is that?
A. The fuse in the Arkpak DC car lead cigarette plug or the vehicle side fuse for the 12V socket could be blown. If both these fuses are OK then in some instances the Arkpak will not charge if there is a large voltage drop between the start battery and the vehicle 12V socket (can occur if an aftermarket 12V socket is fitted at the back of the vehicle). The Arkpak low voltage charge cutout has activated in this case.

Q. Why is there no output power from any of the Arkpak outlets (12V socket, 240V outlet etc) but the fuses are OK?
A. Either the battery is flat (under 10.5 volts) or the main isolator switch has a fault and wont connect to the battery in the "on" position. If the isolator has a fault the Arkpak will need to be returned to Ark Corporation for repair.

FAQ's ArkPak 715

Q. How do I know if the battery is fully charged?
A. The % charge of battery value on the lower right hand side of the main data screen will read 100%.

Q. I have installed the battery correctly but the LCD screen reads “Alarm - open circuit”, what is wrong?
A. The battery is faulty or the 10A “main” fuse is blown, also check battery cables are firmly tightened to battery terminals.

Q. How can I tell what stage the charger is in?
A. The battery charging cycle is indicated on the lower left hand side of the main data screen.

Q. What does Ahr mean?
A. An “amp hour” (abbreviation Ahr) is a unit of electrical charge and refers to the battery’s capacity. A power source rated at one amp hour can deliver one amp continuously for one hour or two amps for half an hour or sixty amps for one minute etc.

Q. What type of batteries will the ArkPak AP715 charge?
A. The ArkPak AP715 can charge most types of rechargeable 12V lead-acid type battery from 60 Ahr capacity up to 140Ahr. There are three main types of 12V lead acid battery that the AP715 can charge - conventional wet lead-acid battery, AGM and gel. The AP715 is not suitable for charging Calcium batteries. The ArkPak can charge both cold cranking type car batteries and deep cycle batteries.

Q. Can I charge the battery using the external terminals or accessory sockets?
A. Yes you can as long as the main isolator switch is in the “on” position. This type of charging is not controlled by the on-board microprocessor since the charge current will flow direct to the battery via the main isolator switch. If an external voltage regulator is not used there is a risk of overcharging and damaging the battery. Please also consider the accessory sockets are fused at 10A so a current flow higher than this will blow the fuse.

Q. Can I leave the ArkPak continually plugged in?
A. Yes the ArkPak will go into float cycle.

Q. My AC adaptor gets hot when charging, is that okay?
A. Yes that is normal, it can reach 75°C.

Q. When I connect my laptop AC adaptor to the AC outlet an alarm sounds with two beeps, why is that?
A. For some laptop adaptors the in-rush current can trigger the alarm and the internal inverter will protect itself. The issue can be overcome by turning the Arkpak AC outlet on first (so green LED is lit), then turning on the laptop and finally connecting the laptop adaptor to the laptop and Arkpak AC outlet.

Q. My 240V outlet keeps blowing the 15A fuse, why is that?
A. The device you have plugged into the 240V outlet is unsuitable (could be too powerful) and has damaged the internal inverter.

Q. Can I install the ArkPak into my vehicle as part of a dual battery installation?
A. Yes you can however, you will need a dual battery wiring kit installed into your vehicle. We recommend you get this kit installed by a qualified auto electrician. You can connect the dual battery wiring loom to the ArkPak either via the external terminals or the Anderson socket. Please remember the main isolator switch must be in the “on” position. The ArkPak can be fixed into your vehicle using the accessory mounting kit (Part no. APB20B - not included). The ArkPak cannot be mounted into the vehicle’s engine bay.

Q. Can I charge the battery using solar panels?
A. Yes you can as long as the main isolator switch is in the “on” position. This type of charging is not controlled by the on-board microprocessor since the charge current will flow direct to the battery via the main isolator switch. If an external voltage regulator is not used there is a risk of overcharging and damaging the battery.

Q. Is it possible for the ArkPak to power a device if it is turned off at the control panel?
A. Yes, it is, since the various output socket are connected direct to the battery via the main isolator switch and not via the smart charger. However it will not be possible to determine the battery voltage or the time remaining if this is done.

Q. Can I use the ArkPak to jump start a car with a flat battery?
A. Yes you can as long as the battery installed in the ArkPak is a cold cranking battery.

Q. Can I jump start the car using a deep cycle battery?
A. Yes you can however you need to connect the battery to the vehicle’s starting battery for an hour to charge the starting battery. The deep cycle battery will need to be fully charge or near to.

Q. Can I charge the battery and power a device at the same time?
A. Yes, the ArkPak is designed to do this.

Q. Why doesn’t my ArkPak go into charge cycle?
A. AC adaptor could be blown and needs replacing.

Q. My cigarette socket won’t provide power anymore, what is wrong?
A. Check the 10A fuse under the lid. If the fuse is okay, turn the main isolator switch on and off a few times. Otherwise the battery may be flat.

How to refit a boat trailer

If you’ve ever dreamed about rebuilding your tired trailer, this is a must read!

How many of us have an old boat and trailer that has certainly seen better days? Years of being submerged in salt water, towed over corrugations and bashed around eventually take their toll on our trailers and leave looking much worse for wear.

This article, originally published in Modern Boating magazine, shows you step-by-step how to re-build your trailer.

Read Part 1
Read Part 2
Read Part 3
Read Part 4

How to measure your P. C. D (Pitch Circle Diameter)

Ark Corporation carries a wide selection of high quality cast iron trailer hubs in galvanised and plain steel finish. Our range includes non-braked Lazy hubs and braked hubs in the form of Disc Rotors and Hub Drums. All our hub kits come complete with seals, dust caps, stud nuts, bearings and pre-pressed studs and bearing cups. We also supply a large range of replacement parts so whether you are replacing your entire hub or re-building the old one, it is very important to use the proper size replacement parts.

Below are just a few key points to consider when selecting and replacing your hub.

1. Determine the number and size of studs.

2. Work out the stud pattern, this is done by measuring the PCD (Pitch Circle Diameter) on your hub. Refer to the diagram, at the bottom of the next page (page 85).

3. Determine the Inner and Outer bearing size. Most bearings are stamped with a reference number that can be used to easily identify its inside diameter. Another easy way is to measure your axle’s size i.e 39mm Round or 40mm Square axles generally use LM Bearings (Holden) and 45mm Square axles use SL Bearings (Ford).

Hubs can be running numerous bearing combinations so it is important to determine your bearing size accurately. Below are just a few combinations:-
  • Tapered Hub – This is the most common hub utilised where the hub will run on the axle with a large inner and small outer bearing.
  • Parallel Hub – This hub is utilised where a larger carrying capacity is needed for that axle setup. The hub runs on the axle with a large inner and outer bearing.
When rebuilding or servicing your existing hub body, it is important to do the following:-
  • Check that all your studs and nuts are intact with clean threads free from burs.
  • Bearings!! Regular maintenance on bearings is essential. When replacing the bearing in your hub remember to replace the inner and outer races or cups. Even if the cups don’t show sign of wear they should be replaced to maintain proper bearing tolerance. Thoroughly grease the bearings by working grease around rollers then pack the hub interior before installing a new grease seal in the back of hub.
  • Check that the rubbers on your grease seals are intact and free from tears, these seals play an integral role of your bearing set up and should not be neglected.
  • Ensure dust cap is intact as this prevents water and dust getting into your bearings, its best to utilise a pair of bearing buddies as these units maintain a good level of grease in your bearings and it allows easy top up of bearings with a grease gun.
  • Check axle to ensure it is free from burs, cracks and any sign of deformation, if need be replace your axle. Refer to Axle – How To Guide.
  • Bearing grease quality is another important consideration, especially for boat trailers that are constantly submerged in water after a long trip. Marine trailer bearing grease provides outstanding water washout and excellent corrosion protection caused by salt water.
Hub Setup
hub setup
Measuring stud PCD
measure stud pcd

Axles: How to measure trailer axles

Ark Corporation carries a wide range of Beam axles, Stub axles and axle accessories in various sizes, ratings and finishes such as black painted or galvanised.


When fitting new or replacing your existing axle, it is vital to consider your trailers GVM (Gross Vehicle Mass) which is the maximum weight of the trailer including its load. Fitting the incorrect axle to your trailer can lead to overloading your axle capacity, causing stress and fatigue to the axle which can lead to metal failure and potential fatal consequences on the road, so getting it right is vital!


Once you have your trailers GVM you can determine whether you need to run a single, dual or tri axle setup to accommodate the load. To work out your axle capacities for dual or tri-axle setup, simply divide the GVM over the amount of axles.


When building a new trailer or refurbishing an old trailer with new wheels, the following measurements need to be considered to correctly measure the axle required for your trailer:

"A" - Trailer Chassis width - Measure to outer most edges mm = mm

+
“B” - Mudguard Width - Measure and include any mudguard spacers if used mm x 2 = mm
+
”C” - Spacing between Chassis and tyre - Minimum spacing 25mm mm x 2 = mm
+
Hub Nose - Using Ark hubs with tapered LM or SL bearings 55  mm x 2 = 110mm
-
“D” - Wheel offset - Measured to outer hub face as per instructions below mm x 2 = mm
-
Spacing between outer mudguard and tyre 10 mm = 10mm

“E” - Beam axle size required tip to tip in millimetres (-/+5mm)

mm

Alternatively if you have your outer hub face measurement the following measurements need to be considered:
“F” - Outer hub face measurement mm = mm
+
Hub Nose - Using Ark hubs with tapered LM and SL bearings 55 mm x 2 = 110mm
Beam axle size required tip to tip in millimetres (-/+5mm) mm
Measuring your wheel offset – To measure your wheel offset for Ark’s axle formula please follow the steps below:
  • Inflate tyre to correct PSI as per manufacturers specifications.
  • Lay the rim and tyre combination face down on level ground.
  • Measure the distance from the ground to the upper most face of the rim,
  • this is where the hub face meets the rim.
IMPORTANT: Ensure the tyre utilised for your trailer fits within the mudguards and has a minimum clearance of 25mm from the chassis.
how to measure axles

Springs: How to Measure Trailer Leaf Springs

Ark Corporation carries a wide range of leaf springs and accessories. Our leaf spring range comprises of slipper springs and shackle springs with various ratings, either in black painted or galvanised finish.

When fitting new or replacing your existing springs, it is vital to consider your trailers GVM (Gross Vehicle Mass) which is the maximum weight of the trailer including its load. Fitting the incorrect springs to your trailer can lead to overloading, sagging, poor vehicle handling, stress and fatigue to the spring steel which can lead to metal failure and potential fatal consequences on the road, so getting it right is vital!

Once you have your trailers GVM you can determine whether you need to run a single, dual or tri axle setup to accommodate the load. To work out your capacities for dual or tri-axle setup, simply divide the GVM over the amount of axles.

You need to start off by matching your existing spring i.e shackle spring (eye-eye) or slipper spring (eye-slipper). Once you have matched your spring type, the next few points need to be considered:

  • Number of leaves, each layer of spring metal is considered a leaf.
  • Thickness of leaves.
  • Inside diameter of the bushing, our slipper springs use a ½” bush while the shackle springs use a 9/16” bush.
  • Length of spring – Measure from the centre of the front bushing in a straight line to the centre of the rear bushing for shackle springs or measure from the centre of front bushing in a straight line to the end of spring for slipper springs.
  • Spring camber – Rest the spring on the floor upside down, measure the distance between the floor and the centre spring bolt.
  • For dual and tri-axle setups, you need to determine your axle spacing to accommodate your wheel sizes. Once this is determined you can work out your spring centres to determine whether you need to utilise centre or off-centre spring bolts or a combination of the two.
Shackle Spring Setup
Tandem Spring Setup A
Tandem Spring Setup B
tandem rocker spring setup b
Axle and spring setup
axle spring setup

Hub Drum Brakes & Accessories

Trailer Brake recommended maximum load table:

1. All loadings based on GTM of trailer.
2. Consideration must be given to the vehicle tow rating, road surface conditions,
trailer tyre size and condition, trailer rim size and weather conditions.

Drum Brakes

Part no.

Description Method of operation Recommended Maximum Load on 13”/14” Wheels Recommended Maximum Load on 15”/16” Wheel
EBP10R 10” single backing plate Electric 1600kg per axle 1400kg per axle
EBP10L 10” single backing plate Electric 1600kg per axle 1400kg per axle
EBP12R 12” single backing plate Electric n/a 2500kg per axle
EBP12L 12” single backing plate Electric n/a 2500kg per axle
MBP90R 9” single backing plate Mechanical 1200 kg per axle 1000 kg per axle
MBP90L 9” single backing plate Mechanical 1200 kg per axle 1000 kg per axle
HBP90R 9” single backing plate Hydraulic 1450kg per axle 1200kg per axle
HBP90L 9” single backing plate Hydraulic 1450kg per axle 1200kg per axle

Part numbers for hub drums that are covered by this table

12 inch

10 inch 9 inch
HD12X2LF HD10X2FD HD9X134FD

HD10X2FH HD9X134FH
HD10X2HQ HD9X134HQ
HD10X2HT HD9X134HT
HD10X25LF HD9X1345LT
HD10X2LF HD9X134LF
HD10X2LH HD9X134LH


Tyre sizes covered by this table

13"

14" 15" 16"
175/R13 185/R14 205/R15 205/R16

195/R15 195/R16
7.5/R16

Trailer Brake Maximum Load Table

Trailer Disc Brake - recommended maximum load table

1. All loadings based on GTM of trailer.
2. Consideration must be given to the vehicle tow rating, road surface conditions,
trailer tyre size and condition, trailer rim size and weather conditions.

Disc Brakes
Hydraulic with 260mm disc hub
Part no. Description Method of operation Recommended maximum load on 13" / 14" wheels Recommended maximum load on 15" / 16" wheels
CH100G Single caliper Hydraulic 2000kg per axle 2000kg per axle


Mechanical with 260mm disc hub

Part no. Description Method of operation Recommended maxium load on 13" / 14" wheels Recommended maxium load on 15" / 16" wheels
CM100G Single caliper Forward pull 2000kg per axle 2000kg per axle

Part numbers for disc hubs that are covered by this table

Plain Galvanised Volex
DH12HQ/HQF DH12HQD VDR12HTG
DH12HT/HTF DH12HQFG
DH12FH DH12HTG
DH12FD DH12HTFG
DH12CD/CDF DH12FHG
DH585LF DH12FDG
DH58LF DH58LFG

Tyre sizes covered by this table

13" 14" 15" 16"
175/R13 185/R14 205/R15 205/R16
195/R15 195/R16
7.5/R16

EziGuide Fitting Instructions

eziguide self loading boat roller

eziguide self loading boat roller fitting instructions eziguide self loading boat roller fitting instructions
1) Start with the Eziguide left side. Remove split pin, washer, spring and mounting bracket from the roller arm (refer to diagr. 1)
2) Reassemble the Eziguide without the spring.
3) Place mounting bracket against trailer cross member and align the roller arm against the bottom of the boat hull (refer to diagr. 2) ensure that the distance between the roller arm and the back of the boat is 25mm (1") min. (refer to diagr. 3) ensure that the distance between the left mounting bracket and the right mounting bracket is 250mm min. (refer to diagr. 4)
eziguide self loading boat roller fitting instructions
eziguide self loading boat roller fitting instructions
4) At the centre of the first mounting bracket slot, mark a straight line, then make a single marking (+) on the trailer cross member (refer to diagr. 5)
5) Dismantle the roller arm from the mounting bracket and place the mounting bracket on the cross member at the same marked position.
eziguide self loading boat roller fitting instructions eziguide self loading boat roller fitting instructions
6) At the second mounting bracket slot, make 2 markings (+) on the cross member, one mark on the top and one mark on the bottom, the distance between the 2 markings will depend on the size and the position of the mounting bracket, do not exceed 50mm. The distance between the 2 markings and the single marking is 25mm (refer to diagr. 6 & 7)
7) Drill 3 holes on the marked positions using 10mm (3/8") drill (refer to diagr. 7)
eziguide self loading boat roller fitting instructions
8) Repeat point 1 to point 7 to the right side.
9) Install the Eziguide at a boat ramp. The boat should be off the trailer. Remove the arm roller from the mounting bracket and fit the bolts provided through the mounting bracket slots, then pass the bolts through the drilled holes of the cross member, fasten lock nuts securely.
Longer bolts are required if the cross member is wider than 50mm, in this case the bolt heads should be against the cross member and the lock nut
against the mounting bracket. For longer bolts, a washer is required between the lock nut and the mounting bracket.

10) Place the correct spring at the correct position of the arm roller (refer to diagr. 8) fit the arm roller on the the correct position of the mounting
bracket (refer to diagr. 9) fit the washer then the split pin, fasten split pin (refer to diagr. 10).

For maximum efficiency when loading the boat.
Reverse the trailer into the water until the rear keel roller is level with the water, any deeper will lose the effectiveness of the Eziguide.

eziguide self loading boat roller fitting instructions

Click here to download a PDF of the Eziguide instructions

Enjoy boating and your new Eziguide.

Four things to consider when choosing a solar power system

Power consumption: The power consumption of your appliance is measured in watts drawn per hour. Multiply the watts of your appliance by the length of time used. Watts X Time = Daily power consumption i.e laptop (65W) - 65W X 5 hours = 325 watts per day

Battery capacity: Battery capacity is the amount of energy your battery can store, this is measured in amp hours (Ah). To convert the amp hours into watts, multiply the amp hours by the battery voltage i.e. 130Ah battery - 130Ah X 12V = 1560 watts battery capacity.

Power generation: The power generation of solar panels is measured in watts per hour. Multiply the watts of the solar panel by the time exposed to the sun. Then multiply this by the natural factor of 0.8, this factor in the natural losses of energy through panel efficiency and weather conditions. Watts X Sun time X Natural factor = Power generation i.e. 60W solar panel - 60W X 8 hours X 0.8 = 384 watts per day

Solar charge controller: Solar charge controllers regulate the current from the solar panels and prevent the battery from over-charging. Solar charge controllers need to be matched to or above the output current of the solar panels.

Using the above examples:

Without solar panels: A battery capacity of 1560 watts can run the laptop at 325 watts per day for 4.8 days. Simply divide the battery capacity by the power consumption 1560W / 325W = 4.8 days.

With solar panels: Using the 60W solar panel 384 watts per day means you will power your laptop of 325 watts per day permanently. This is possible as the power generated from the solar panels exceeds that of the power consumed by the appliance.

Aligning your solar panels

align solar panels to the sunlight

More "FAQ" information coming soon..........

Product of the Month

LED USB light arkpak