Vapac LR10 Operation Manual
Also see for VapaNet Series: Operation manual
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Contents
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264.0 Trouble-shooting Check List- Use manual drain option to check pump operationCheck/Cause/Remedy- Check main power is connected and switched on.- Check power supply fuses.PreliminarySymptomPower-On Neon – OffSymbol-LED – OffDisplay - BlankPower-On Neon – OnSymbol-LED – OnDisplay - Blank- Check if security circuit is open circuit- Check 24V 6.3A fuse mounted at top of Microvap controller PCB 1150630Automatic STOP – Feed Fault indicated on the Display.PossibilitiesWater is not connectedWater connected but notreaching cylinder.Water in cylinder andoverflowing.Checks- Check water stop valve is open- Check internal Vapac hose connections for a leak.- Check float switch operationUnit On-Line but inadequate or no steam production.PossibilitiesContactor not madeMCB’s trippedSSR’s not switchingChecks- Contactor coil, Float switches, Control PCB.- Cylinder Inspection, inspect elements, and float switch operation.- SSR Check as described below,ImportantEquipment neededProcedureSSR ReplacementAutomatic Stop – Drain Fault indicated on the display.Specialised check of the Solid State RelayThe following check should be carried out by a competent electrician- An AC Voltmeter, multi-meter set to full AC line voltage or suitable voltage testinstrument.- Remove access panels from both the steam cylinder and electrical compartments- Ensure that the humidifier has an operational level of water in the cylinder. Switchunit on and check that the display indicates “Vapac on line”.- Apply the voltmeter, set to the ful line Voltage, across the output terminals of theSSR being tested (i.e. the two terminals carrying the cabling to the elements).Correct Voltmeter Response – oscillating between full and near zero Voltage.If Voltmeter reads a constant near zero Volts, Check:a) That the unit is not feeding water – if it is, wait until the feed valve closes and thenre-check. (reason the SSR will hold closed while the feed valve is open).b) That the control PCB is giving the correct pulsed D.C. signal (approx 5V D.C.) to theSSR control input terminals.A faulty SSR should be replaced with an SSR of the same (or higher) Voltage andamperage rating. Disconnect the unit from the electrical supply. Disconnect theSSR and undo the mounting screws. The SSR is bedded in thermal compoundto assist heat transfer – it is important that this is cleaned off, and a layer freshcompound placed under the replacement SSR. When it is secured in position.Reconnect the SSR, reconnect the electrical supply and check the SSRfunction as above before replacing the access panels.Note: Use proprietary thread locking compound on the line voltagePossibilitiesDrain pump function impairedFloat switch failureCylinder O/Let BlockedChecks- If pump will not function, empty cylinder by disconnecting at the tundish fill-cup thewater supply hose to the cylinder and draining the water into a bucket. Remove,dismantle and clean pump housing / Replace pump if required.- Check float switch operation- Check & unblock |
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