Rice Lake DeckHand/DeckHand Rough-n-Ready System - Manual (Page 10)

6 DeckHand Portable Floor Scale
3.0 Service Information
3.1 Troubleshooting Guide
3.2 Periodic Maintenance
Two important spaces – between the platform side and frame, and beneath the platform – should be periodically
cleaned to prevent debris build up.
The platform can be removed for periodic cleaning by unscrewing the lock nuts from the four welded studs on the
underside of the platform. The platform can then be lifted off the load cell channels for cleaning.
When cleaning beneath the platform, be careful not to move the load cell cables to a new position where they can
be pinched by the platform in operation.
Do not attempt to spray wash scales with non-hermetically sealed load cells. Water damage is a
common cause of failure in non-hermetically sealed load cells.
Use care with hot water wash downs for hermetically-sealed load cells. The hot water may not damage the load
cells, but the elevated temperatures can cause incorrect readings until the unit cools to room temperature.
When replacing the platform, tighten the four locknuts on the welded studs only until the flat washers beneath them
contact the channel surface. Do not tighten the nuts further and compress the cushion pads between platform and
channels. The platform must be free-floating on resilient pads for continued accuracy.
Symptom Possible Problem Solution
System does not operate—
no display Power disconnected. Check and reconnect.
Indicator fuse blown. Check for cause. Replace.
Interface cable cut or disconnected. Repair.
Signal leads incorrectly connected at indicator. Install according to indicator installation
manual.
Display stays at zero Indicator faulty. Service indicator.
Load cell connections faulty. Check cable connections in junction box and
at indicator.
Load cell overload screws turned fully in. Loosen overload screws to 0.020” gap.
Erratic weights Vibration near scale. Remove source of vibration or increase digital
filtering.
Platform not level. Level scale by shimming if necessary.
Load cell or cable water damage. Replace.
Debris under load cells or platform. Clean.
Indicator faulty. Use simulator to test indicator for stability.
Service indicator.
Consistently high or low
weights Indicator not properly adjusted to zero. Zero the indicator according to operating
manual.
Platform binding. Obtain adequate clearance for free platform
movement.
Indicator not calibrated. Calibrate according to indicator manual and
Section 2.6.
Load cells cables pinched between platform and
base. Reroute cables to provide clearance.
Load cells faulty. Test and replace load cells if necessary.
Table 3-1. Troubleshooting
Important