DeckHand TM Portable Floor Scale Installation and Service Manual 43978 Rev A
Contents 1.0 Introduction.................................................................................................................................. 1 1.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Operating Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.0 Installation ..................................
ii DeckHand Installation Manual
1.0 Introduction The DeckHand™ Portable Floor Scales are fully electronic, NTEP-certified floor scales allowing one-person portability on large rubber wheels. Available in painted steel or stainless steel construction, these rugged scales come in 500 lb, 1000 lb, and 2000 lb capacity. The heavy diamond-tread platform is 30-1/2 in x 24-1/4 in (0.77 m x 0.62 m) with an overall base height of only 4 1/2 in (0.11 m).
WARNING Failure to heed may result in serious injury of death. DO NOT allow minors (children) or inexperienced persons to operate this unit. DO NOT operate without all shields and guards in place. DO NOT jump up and down on the scale. DO NOT use for purposes other then weight taking. DO NOT place fingers into slots or possible pinch points. DO NOT use any load bearing component that is worn beyond 5% of the original dimension. DO NOT use this product if any of the components are cracked.
2.0 Installation Overview Assembly of the scale consists of the following steps: 1. Unpacking 2. Assembling mast onto scale base 3. Installing optional pivoting ramp 4. Mounting and wiring the indicator 5. Configuring the indicator 6. Calibrating the unit with test weights 2.1 Unpacking The standard scale, with no added options, is shipped with load cells and indicator cable pre-wired into the junction box on the mast. The indicator can be mounted and wired after the mast is in place.
2.3 Mounting and Wiring the Mast and Indicator Assembling Mast to Base Remove back plate from mast. Carefully insert mast into window in base. Align holes and secure with fasteners (refer to Figure 4-1). Wrap excess cable around hooks in mast. Re-assemble back plate to mast. Attaching Indicator Bracket to Mast The DeckHand is supplied with a swivel bracket for a variety of RLWS indicators.
2.5 Configuring the Indicator Refer to the indicator manual for information on configuring the indicator for your application.
3.0 3.1 Service Information Troubleshooting Guide Symptom Possible Problem Solution System does not operate— Power disconnected no display Indicator fuse blown Display stays at zero Erratic weights Consistently high or low weights Check and reconnect. Check for cause. Replace. Interface cable cut or disconnected Repair. Signal leads incorrectly connected at indicator Install according to indicator installation manual. Indicator faulty Service indicator.
3.3 Load Cell Replacement Disassembly 1. Remove the four locknuts and washers that secure the platform to load cell channels. Lift off the platform. Remove the column back plate to gain access to the j-box. 2. Determine which load cell is defective. Use a hardened hex-drive bit and large ratchet wrench to remove the four hex-drive countersunk machine screws holding the channel to the defective load cell underneath. Lift off the channel and the spacer on top of the load cell.
+EX –EX +SI –SI SHD SHD –SI +SI –EX +EX 100 K JU2 JU3 CELL 3 CELL 2 100 K –EX +SI 100 K –SE –SI +EX +SI SHD +SE –SI SHD JU4 SHD –SI JU1 CELL 4 +EX –EX +SI –EX +EX CELL 1 100 K 23126 Rev. A INDICATOR (Cells 2 & 3 disabled) Figure 3-1 DeckHand Junction Box Cutaway Replacing Deck Platform Put the scale flat on the floor and set the platform on the channels so the welded studs drop into the channel holes.
Corner Trimming 100 K JU4 JU1 CELL 4 +EX –EX +SI –SI SHD –SI SHD +SI –EX +EX CELL 1 100 K All DeckHand scales are delivered with the junction box trimmed, but re-trimming to equalize loading is necessary after replacing a load cell. To trim the scale, the output from each load cell must be matched by adjusting the signals with potentiometers at the junction box—a process known as trimming.
3.4 Installing Protective Clamshells Stainless steel clamshells—load cell protectors—are mounted around the load cells to provide an extra degree of spray protection. The lower protector is slightly smaller than the upper one which overlaps on all sides. The load cell cable exits through the bottom surface of the lower clamshell then through a hole in the mounting plate. Top Spacer Block Overload Screw, 0.020” gap Bottom Spacer Block Figure 3-2 Clamshell Load Cell Protectors 1.
3.6 Ramps and Replacement Load Cells 41 27 30.5 24.25 25 31 Figure 3-4 Scale and Ramp Dimensions W h e n attaching a ramp to a D e c k H a n d scale, place one plastic p i v o t washer under the head of the shoulder bolt and three washers on the bolt in the space between the ramp arm and the scale deck.
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DeckHand Limited Warranty Rice Lake Weighing Systems (RLWS) warrants that all RLWS equipment and systems properly installed by a Distributor or Original Equipment Manufacturer (OEM) will operate per written specifications as confirmed by the Distributor/OEM and accepted by RLWS. All systems and components are warranted against defects in materials and workmanship for one year. RLWS warrants that the equipment sold hereunder will conform to the current written specifications authorized by RLWS.
13 Rice Lake Weighing Systems PN 119071 01/13