Metro 9 Series Controlled Humidity Heated Holding & Proofing Cabinets - Manual (Page 12)

10
CARE & MAINTENANCE
Cleaning The Cabinet
Warning: Unplug the cabinet before cleaning or servicing. Do not wash the cabinet with a water jet or high
pressure water.
Caution: Do not spray or pour water into the control enclosure. To clean the cabinet, wipe with a damp cloth and
dry with a towel. Use only cleaning agents approved for stainless steel or aluminum (depending on your
cabinet construction).
Caution: Do not use cleaners with chlorides or phosphates as they may cause damage to stainless steel. Do not
use strong alkalis on aluminum as they may discolor it.
1. Use cleaners in the proper concentrations. Follow the manufacturer’s directions for the cleaning product used.
The fl oor of the cabinet and water reservoir may be hosed out with low pressure water. After using any cleaning
products, thoroughly rinse all surfaces to remove all residue.
2. Use a damp cloth or sponge. Mild soap suitable for stainless steel and aluminum is acceptable. Dry with a
clean towel. Wipe up spills as soon as possible and regularly clean the cabinet to avoid staining and diffi cult to
clean conditions.
If a control knob needs to be removed for cleaning, use a 5 / 64 " Allen key to loosen the set screw on the control
knob. Remove the knob, clean the control face and/or knob and replace the knob and tighten the set screw.
Cleaning and De-scaling Instructions for the Water Reservoir:
1. Use only potable water (water suitable for drinking) in the cabinet. The reservoir is equipped with a heater, which
heats the water to create humidity and a water level sensor. As water evaporates from the reservoir, any minerals
and chemicals present in the water are left behind in the remaining water. Given enough time, these minerals can
build up on the reservoir, heater and sensor causing corrosion and a decrease in performance. Using distilled
water or conditioned water will help prevent scale build up. If distilled water is used, you may need to add
baking soda to the water for the low water sensor to work properly. Contact your local water authority for
help in determining if a water conditioning system is advised. Adding approximately one tablespoon of white
vinegar or lemon juice to the water reservoir will help prevent scale build-up.
Warning: Water inside this cabinet’s reservoir is hot during use! Turn the cabinet off, unplug it from the electrical
outlet and allow the cabinet and water to cool before draining the water reservoir.
2. Do not allow scale to build up on the reservoir, heater or sensor. Dirty water should not be allowed to sit
overnight in the cabinet. At the end of each operating day, turn the power off and allow the cabinet and water to
cool. Drain the reservoir.
To de-scale the reservoir, heater element and water level sensor you may use a food grade de-scaler suitable
for stainless steel. You may already be using a de-scaling product in your kitchen for use in your icemaker,
dishwasher or coffee maker equipment. Follow the cleaning instructions on the product label. When fi nished,
thoroughly rinse all cleaning agents off the reservoir, heater and sensor and allow them to dry. At the beginning of
the next operating shift, refi ll the reservoir with potable water.
L01-419 Rev. F L&M.indd 10 1/16/12 2:36 PM