Operating Instructions Merlin and Magnum UniDrive Main Features 1. Water tank 2. Locker 3. Side loading hatch 4. Door open/close ram 5. Rear wander hose (standard) 6. Fuel tank (orientation determined on chassis type) 7. Low pressure water pump and valves 8.
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Operating Instructions Merlin and Magnum UniDrive ENGLISH Merlin and Magnum UniDrive Operating Instructions Incorporating Operator’s Basic Maintenance Information Part No. SCAZ038022 Version: 3.0.00 ....6th February 2024 To get the latest version of this Operator’s Manual visit our website scarab-sweepers.com This manual is published by the Technical Publications Department of Scarab Sweepers Ltd. and every effort is made to ensure that the information it contains is correct at the time of publication.
Operating Instructions Merlin and Magnum UniDrive General information WARNING - Voltage sensitive components. Do not use a boost starter / super start. A boosted start will burn out the vehicles electronic control nodes. If batteries are not charged always use a fresh set. Warning CB Radios and other electrical equipment used in the sweeper should be properly suppressed (EMC) to prevent the possibility of interference in the sweeper’s electronic system.
Operating Instructions Merlin and Magnum UniDrive Towing Refer to chassis manufactures recommendations. Serious damage to the transmission will result if the vehicle is towed while the gearbox is engaged. Identification Plates The SERIAL NUMBER PLATE is located on the rear face of the left hand suction nozzle spigot. The Serial Number will comprise four or five numerical digits only (for example 5843 or 13672).
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Operating Instructions Merlin and Magnum UniDrive Part No. SCAZ038022 - 3.0.00 E&OE...
Operating Instructions Merlin and Magnum UniDrive Health and Safety advice In the interests of your health and safety, it is important that the following points are observed at all times. • Only trained operatives should be allowed to drive or work on this machine. •...
Operating Instructions Merlin and Magnum UniDrive The universal safety symbol as well as red text is used throughout this handbook and when encountered the related information must be adhered to. Refers to important information. Identifies cautionary information and specific procedures when required. Refers to visual examination to confirm the condition or status of a specific item.
Operating Instructions Merlin and Magnum UniDrive Safety precautions When using external equipment such as the high-pressure water lance, or when dealing with potentially hazardous situations while sweeping (e.g. unblocking a suction nozzle), always wear the appropriate Personal Protection Equipment (PPE) and exercise extreme caution if required to handle any of the material being swept.
Operating Instructions Merlin and Magnum UniDrive Operating advice Please remember, the information provided in this handbook is designed to ensure that the Scarab sweeper operates both safely and efficiently. The design of this machine is for the removal of spoil on traffic areas, also litter collection, using the wander hose. A poorly maintained machine will become unreliable, inefficient and potentially dangerous.
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Operating Instructions Merlin and Magnum UniDrive The LCD monitor’s USB connection is for uploading/downloading information (ONLY) and must not be used for any other purpose. It is the responsibility of employers to carry out they own risk assessment for the machine, operators or other persons using or affected by the machine and equipment.
Operating Instructions Merlin and Magnum UniDrive Safety support props Door safety prop Ensure the prop is correctly positioned within the ratchet rack Auto ratchet hopper prop When inserting the door prop, ensure it is correctly positioned in the locating slot Part No.
Operating Instructions Merlin and Magnum UniDrive The CANbus system The CANbus system comprises two control panels (main and auxiliary) an LCD monitor and a number of control nodes. The system controls and monitors all sweeper functions and maintains a log of various operating parameters such as operating hours and any fault conditions that might occur.
Operating Instructions Merlin and Magnum UniDrive Main control panel switch functions Switch functions are described from Left to Right and Top to Bottom. F1 / F2 - Press to activate special options. System Start - Press to start/stop the system and engage/disengage PTO. Brush Speed (-) - Press to decrease brush speed.
Operating Instructions Merlin and Magnum UniDrive Auxiliary control panel (door pod) switch functions High Pressure Water Pump (Option) - Press to start. Suction Fan - Press to start the Suction Fan, approximately 2000 rpm. Cruise Control - Not applicable. Nozzle Tilt (Locking Mode) - Press to tilt the suction nozzle for larger items. Suction Fan ‘Boost’...
Operating Instructions Merlin and Magnum UniDrive Auxiliary side brush controls The auxiliary side brush is an extra side brush that is normally mounted ahead of the side brush. This brush has an extended reach so can be used to sweep at a greater distance than the standard side brush.
Operating Instructions Merlin and Magnum UniDrive Hopper remote control switch box functions SAFETY INTERLOCK The hopper Raise/Lower and rear door Open/Close switches are located on the remote control box. This is stowed in the cab, between the driver’s seat and door and is connected This switch must be to a socket via a coiled lead.
Operating Instructions Merlin and Magnum UniDrive The LCD monitor The sweeping monitor displays information on the current status of the sweeper while it is in sweep mode, by indicating which items of equipment are active, plus other relevant information ie: fluid levels, fan speed and temperatures, it also alerts the user to any warnings by means of appropriate flashing symbols and, when appropriate, a warning buzzer.
Operating Instructions Merlin and Magnum UniDrive Additional controls and instruments Brush pressure Do not exceed a pressure of 2.5 bar when adjusting brush pressure settings. Failure to comply will result in drastically reduced brush life. - Air Pressure Regulator - Used to adjust the amount of up/down thrust applied Central brush controls Brush pressure controls mounted on subframe...
Operating Instructions Merlin and Magnum UniDrive Auxiliary manual hydraulic pump Never work under a raised hopper or rear door unless the appropriate safety prop is in the deployed position. In the event of hydraulic system failure, an auxiliary (manually operated) hydraulic pump is fitted, to enable the rear door and hopper to be operated.
Operating Instructions Merlin and Magnum UniDrive Operating Modes Refer to the health and Safety Information on Page 11. There are two operating modes. Normal and PTO mode. PTO mode is used when sweeping is required and normal mode would be used when not sweeping and in normal/transit mode.
Operating Instructions Merlin and Magnum UniDrive When sweeping it is advised to lock the gearbox in 1st gear. From the Allison drive control panel, select “D” for drive. The display will show ‘6 1’. Press the ‘-’ (down arrow) button to lock in 1st gear. The display will show ‘1 1’ If a faster sweep speed is required the throttle pedal can be depressed to increase engine speed up to 1800 rpm and hence an increase in road speed.
Operating Instructions Merlin and Magnum UniDrive International MV The PTO can be engaged at anytime the road speed is less than 25 mph (40 km/h) and the engine speed is less than 1000 rpm. The PTO can be engaged on the move. It is however advisable to slow down to 5 mph (8 km/h) or less when engaging the PTO. Engaging PTO Engine ON and air tanks full before attempting to engage PTO mode.
Operating Instructions Merlin and Magnum UniDrive When sweeping it is advised to lock the gearbox in 1st gear. From the Allison drive control panel, select “D” for drive. The display will show ‘6 1’. Press the ‘-’ (down arrow) button to lock in 1st gear. The display will show ‘1 1’ If a faster sweep speed is required the throttle pedal can be depressed to increase engine speed up to increase engine speed up to 1800 rpm and hence an increase in road speed.
Operating Instructions Merlin and Magnum UniDrive Sweeping 1. Switch on suction fan (approx. 2000 rpm) or ‘Boost’ (approx. 2200 rpm) as required. Fan speed can be confirmed by referring to the LCD screen. 2. Select the desired configuration of sweeping equipment and water sprays if required, either manually or by pressing the Favourite Settings button to recall your preferred arrangement.
Operating Instructions Merlin and Magnum UniDrive Reverting to normal drive mode 1. Move the multi-function lever (located on the auxiliary control panel) to the OFF position. This will stop and raise all sweeping equipment to the stowed position. The sweeping equipment symbols displayed on the LCD monitor will change back to grey, indicating that they are no longer active.
Operating Instructions Merlin and Magnum UniDrive Discharging the hopper (tipping) In the interest of health and safety and to avoid possible damage to the sweeper or adjacent structures, it is essential that the remote hopper/door controls are not activated from within the cab. Always use these controls outside of the vehicle from a vantage point that affords a good view of the sweeper and its immediate surroundings.
Operating Instructions Merlin and Magnum UniDrive Standard wander hose A wander hose is a large flexible tube/hose that is used to suck up objects in areas that the sweeper is unable to access for example, drain inlets, under benches, etc. The wander hose will be connected to one of the following. Rear door (standard wander hose), rear top panel (rear mounted wander boom) or as an overhead suction boom mounted on top and rear of the hopper in a rotatable turret.
Operating Instructions Merlin and Magnum UniDrive Rear mounted wander boom Using the rear mounted wander boom Vehicle in PTO drive. Gearbox in neutral. Park brake On. Multi-function lever ON. 1. Suction Fan ON. 2. Unhook the wander hose boom from its stowed position w. 3.
Operating Instructions Merlin and Magnum UniDrive Using the overhead wander boom Vehicle in PTO drive. Gearbox in neutral. Park brake On. Multi-function lever OFF. 1. Unlatch the hose assembly from its stowage and attach suction tube (extra tubes can be added to give greater length). 2.
Operating Instructions Merlin and Magnum UniDrive Dust suppression (water) system Use of the low pressure water spray, dust suppression, system when sweeping, will reduce the amount of dust generated and ensure a more efficient collection of material. This is because wet material is heavier and will drop more readily from the air stream in the hopper. If swept dry material will pass through the fan filter screen, wearing out the suction fan blades on its way back out to the environment behind you.
Operating Instructions Merlin and Magnum UniDrive Magnum sweepers Filling the water tank Ensure that the water tank to water strainer valve is in the shut position and any other tank drain valve is shut. Attach the appropriate coupling and water hose to the filler aperture and fill until the blue float reaches the top of the water level sight tube (use...
Operating Instructions Merlin and Magnum UniDrive Using the high pressure water system (option) High pressure water can be hazardous, always wear goggles or suitable eye/face protection. Exercise extreme care when using the lance, do not direct the jet at other people or electrical connections. Failure to comply can result in serious injury.
Operating Instructions Merlin and Magnum UniDrive Hand lance detergent option 1. With the hand lance in use, check that the detergent container has sufficient fluid. 2. Turn on the control valve y. 3. Adjust the spray pattern valve on the hand lance to achieve desired effect.
Operating Instructions Merlin and Magnum UniDrive Draining the water system with air purge It is vital that the water system is drained totally if the air temperature is expected to fall to 0°c or below. The procedure to drain the water from the system is as follows: 1.
Operating Instructions Merlin and Magnum UniDrive Using the air purge An air purge system is fitted to assist with removing water from the system, this should always be used if the temperature is expected to fall below 0°c. It maybe required to have the trucks engine running to keep the air pressure up. It is vital that the water system is drained totally if the air temperature is expected to fall to 0°c or below.
Operating Instructions Merlin and Magnum UniDrive Clearing a blockage in the suction path A blockage in the suction path will be indicated by a trail of material behind the vehicle. Use the following instructions and the diagram opposite to locate and remove the obstruction:- 1.
Operating Instructions Merlin and Magnum UniDrive Recommended operator’s routine maintenance It is important that the following routine maintenance procedures are carried out as directed. This will help to ensure that your sweeper performs at the optimum level of safety and efficiency. Refer to the paragraphs immediately following this schedule and to the Table of Contents for more detailed information.
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Operating Instructions Merlin and Magnum UniDrive Weekly Maintenance procedures Clean the suction fan thoroughly, using the scraper provided and high pressure water (See Page 44). Conduct a thorough inspection of the fan assembly to verify its condition. Report any defects (See Page 44). Grease hopper ram (Top and bottom).
Operating Instructions Merlin and Magnum UniDrive Key maintenance procedures Cleaning the suction fan and screen Failure to comply with the following could result in serious injury. Before working on the machine position it on firm, level ground and apply park brake. The fan is an extremely heavy rotating mass.
Operating Instructions Merlin and Magnum UniDrive Hydraulic oil tank The hopper prop must always be in the deployed position when working beneath a raised hopper. Failure to do so could result in serious injury. It is advisable to top-up the Hydraulic oil level when the system is cold. The hydraulic oil tank gauge is fitted with low level sensor.
Operating Instructions Merlin and Magnum UniDrive Suction nozzle clearances Inspect the suction nozzle flaps to verify that they are in good condition and do not show excessive wear. Adjust as necessary to achieve the correct flap to ground clearances. Tow point The factory settings are: •...
Operating Instructions Merlin and Magnum UniDrive Side brushes Do not attempt to alter brush settings while brush is rotating. Manual 315/320mm Brush An effective brush set-up ensures good sweeping performance. The override pattern following settings produce excellent results in most conditions. Experience will determine if other settings are better suited to specific conditions.
Operating Instructions Merlin and Magnum UniDrive Removing and cleaning the water filter element, Magnum The water system is fitted with a single large flow capacity strainer to ensure that foreign matter does not enter the pumps. The following steps detail the recommended cleaning procedure. It will be necessary to place the shut-off valve in the closed position.
Operating Instructions Merlin and Magnum UniDrive Removing and cleaning the water filter element(s), Merlin Both the low-pressure and, if fitted, the, high-pressure water pump are fitted with strainers to ensure that foreign matter does not enter the pump. The following steps detail the recommended cleaning procedure. It will be necessary to place the shut-off valve(s) in the closed position.
Operating Instructions Merlin and Magnum UniDrive Manual greasing and lubrication Carry out manual greasing in accordance with the appropriate schedule on page 42 and by referring to the accompanying diagrams shown here. Suction nozzle assembly Central brush (wide sweep) Door hinge x 3 Side brush assemblies Locking clamp x 3 Low pressure...
Operating Instructions Merlin and Magnum UniDrive LCD monitor - Options screen To Access the option menu from the start-up screen press button Button function 1. Display: Press to change background colours (black/white). 2. Menu: Press to access option screen mode (illustrated). 3.
Operating Instructions Merlin and Magnum UniDrive Hours worked Driver fault codes Displays the working time of various functions. Rotate the encoder to highlight either the CAN or desired Node. Service Hours only display when activated. Press the encoder to enter. Part No.
Operating Instructions Merlin and Magnum UniDrive CAN error screen Driver fault codes Identifies location of system errors. Entering a Node screen allows Pin-Contact view. Highlighted in red when active. Pin numbers with an active fault are highlighted in RED. = Open Circuit = Short Part No.
Operating Instructions Merlin and Magnum UniDrive Screen Settings Displays the following current conditions: Rotate the encoder to highlight the desired panel and press the • Engine Speed encoder to enter the setting screen. • Battery Voltage • Pedal Position • Parking Brake Position •...
Operating Instructions Merlin and Magnum UniDrive Screen brightness setting Time/date setting Rotate the encoder to adjust the screen brightness (2% Rotate the encoder to the desired panel and press. Rotate to the increments). correct, Year, Day, Hour, etc and press the set button. Pressing the MIN button adjusts the brightness to 10%.
Operating Instructions Merlin and Magnum UniDrive Rear camera Information Enable/disable rear camera. When fitted. Displays current Node program version. A green tick displays in the centre of screen icon when camera is Press button to access the PDF viewing screen. Follow the on activated.
Operating Instructions Merlin and Magnum UniDrive Button checks Main control panel button check Highlight the appropriate panel and press the controller. Press the appropriate button on the main control panel. As each button is pressed the corresponding graphic will illuminate. A beep will sound if the function is fitted.
Operating Instructions Merlin and Magnum UniDrive Auxiliary control panel button check Use the main control panel instructions to test buttons and joystick. Part No. SCAZ038022 - 3.0.00 E&OE...
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