Randell HY-12E Supplementary Manual Download Page 1

HY5E/HY5G AND HY12E/HY12G DELIMING INFORMATION

Regular deliming, depending on your steamer usage and local water quality, must be done to enhance
performance and prolong the life of your HyPerSteam™ convection steamer.  Steamer must be turned off
after every use to prevent lime scale buildup—do not run steamer continuously.  

ALWAYS USE HOT

PADS OR MITTS WHEN HANDLING HOT STEAMER PANELS OR RACKS.

RECOMMENDED TOOLS & CLEANERS:

•  Groen Delimer/Descaler (Part Number 114800). 

Do NOT use any product containing chlorides or

sulfamic acid, including hydrochloric acid.

•  Nylon scrub pad, cloth and/or sponge

DELIMING STEPS (Use Touch Pad):

STEP 1

Press ON/OFF to turn steamer off.  Open door.

STEP 2

Let cavity cool for 5 minutes or longer.

  While cool, wipe out cavity. Drain holes at rear

of cavity must be clear of debris.  Close door.

STEP 3

HY5E/HY5G:

Pour 1 pint (2 cups) of delimer into deliming port before delime cycle is started and then
close port.  Double-stacked unit cavities must be delimed separately. Select which cavity
to delime first.

HY12E/HY12G:

Pour 2 pints (4 cups) of delimer into deliming port before delime cycle is started and then
close port.  Double-stacked unit cavities must be delimed separately. Select which cavity
to delime first.

STEP 4

Press and hold CLEAN while also turning steamer on by pressing ON/OFF, until only
DELIME and POWER lights remain on (all lights will turn on, then off, except DELIME
and POWER).

STEP 5

Delime cycle will start, taking about 30 minutes. When delime cycle is complete, DELIME
light will appear, DONE light will flash and beeper will beep.

STEP 6

Press ON/OFF to turn steamer off.  

Let cavity cool for 5 minutes or longer. 

Open door,

wipe out inside of cavity and wipe door gasket. Close door.

STEP 7

To use steamer, press ON/OFF. When READY light appears, steamer is ready to use.

STEP 8

HY5E/HY5G AND HY12E/HY12G DOUBLE-STACK ONLY:

Double-stacked unit cavities must be delimed separately.  Repeat Step 1 through Step 8
to delime other cavity.

NOTES:

 If DELIME light flashes rapidly (5 times per second), press 

CLEAN

 to restart delime cycle.

 If power outage occurs during deliming, delime cycle must be restarted.  Press 

CLEAN

.

 

For best performance, do not interrupt delime cycle.

  If delime cycle must be stopped, press

ON/OFF to turn off.  

Let cavity cool for 5 minutes or longer

.  Press ON/OFF to turn on.  Set

timer for 5 minutes.  After beeper

 

beeps, press ON/OFF to turn off.  

Let cavity cool for 5

minutes or longer

, carefully open door(s) and wipe out cavity completely.

Part Number 141850  Rev. A.

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