Recommended Preventative Maintenance Schedule - Malmet WDS Operation, Maintenance And Installation Manual

WDS
Operation, Maintenance and Installation Manual
5.3

RECOMMENDED PREVENTATIVE MAINTENANCE SCHEDULE

maintenance person)
To be performed THREE TIMES YEARLY for units in constant day and night use and HALF YEARLY or YEARLY
for units in lesser usage situations.
ISOLATE UNIT FROM ELECTRIC SUPPLY BEFORE SERVICING.
a) Remove top and side panels and front bottom panel behind detergent door.
Note: Panel removal
i) Remove 4 self-tapping screws on the top panel.
ii) Lift the side panel up to remove.
iii) Remove 2 x 3/16" screws from bottom front panel.
Note: Control lockout switches are mounted under the top panel and behind electrical access door. Device will
not operate if switch is open circuit.
b) Remove and clean the sprays in sequence (do not mix sprays with other spray groups). Chamber top to bottom.
Cool down sprays x 2, Top sprays x 4, Bottom sprays x 4, Pan Tip sprays x 2 and rotary nozzles x 2. Door Urine
bottle sprays x 4 – check that the holes are clear and clean as necessary (hold under tap and pressurise or clean in
ultrasonic cleaner). In areas with hard water or high minerals in water supply, chemical de-scalar may be the
quickest and easiest means to remove built up of deposits. Replace before removing next spray group.
c) Check condition of Rack positioning magnets.
Note: Replace magnets annually.
d) Check hinge screws for tightness on Pan Rack and Bowl rack.
e) Check condition of door gasket.
f) Steam generator: Check for scale build up inside element housing and water tank. Remove and clean temperature
probe and water level sensors.
g) Water Tank: Check for scale build up inside tank and on element. Remove and clean temperature probe and water
level sensor.
h) Remove and clean temperature probe at steam outlet.
i) Water inlet solenoids: Check filters for material build up, clean if necessary.
j) Make sure the water fill solenoids are completely shutting off and levels are not creeping up, if so, clean and/or
replace the solenoid.
k) Detergent pump: Check hose on pump and hoses in detergent lines for cracks.
l) Load Cell detergent bottle: Remove detergent bottle, unscrew load cell mounting plate being careful that the wire to
load cell aren't strained when inspecting load cell. Clean any detergent residue from under plate. Check load cell
for corrosion, lightly spray with WD40.
m) Before replacing panels run purge reset cycle three times to clear any airlocks in spray lines and check for leaks.
Dust down components if necessary. Replace all panels.
n) Cycle verification: Run the 3 cycle options starting with Bedpan/Urine bottles. Download logger data to PC, Print of
report of the last 3 cycles. Check temperatures attained and wash cycle times are within the operating
requirements.
o) Replace battery on processor PCB every 12 months. Check time and date, adjust if required.
Malmet will make available on request circuit diagrams, component parts lists, descriptions, calibration instructions,
or information which will assist the user's appropriately qualified technical personnel to repair those parts of the
product.
ISSUE 5
WARNING 240-415 VOLTS
27
Page
(to be performed by a qualified
15/03/2016