VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS
F24700 (October 2001) Page 24 of 68
WARNING: READ AND FOLLOW THE
INSTRUCTIONS FOR THE DE-LIMI NG CHEMICAL
BEING USED. USE PLASTIC OR RUBBER
GLOVES TO AVOID SKIN CONTACT. IF THE
CHEMICAL COMES IN CONTACT W ITH SKIN,
RINSE WITH CLEAN W A T ER.
5. Mix del i ming solution according to the
instructions for the chemic al being used.
NOTE: Boiler water capacity i s approximately seven
gallons.
NOTE: If delim ing solution comes in contact with
steamer components, lightly r inse off with clean
water.
A. Turn OFF water supply.
B. Turn power switch ON to close the drain
valve.
C. Pour deli ming solution into the boil er shell.
6. Install a new gasket on the hand hol e pl ate then
position and tighten the plate to the boi ler.
7. Ensure cooking compar t ment timers are OFF.
8. Turn power switch ON and open water supply
valve.
9. Allow the boil er to reach operating pressure
and run for 90 minutes or per the instruct ions
for the deliming chem ical in use.
A. Turn power switch OFF and allow the
boiler to completely drai n.
B. Turn power switch ON to refill boiler and
allow to heat until full y pressurized.
10. Steps 9A and 9B must be repeated three tim es
to thoroughly rinse the boiler.
11. Steamer is now ready for normal operation.
Descaler (Cathodic Protector)
Two descalers are installed inside the boiler shel l
and are used to as a preventative m easure t o:
•Reduce scale deposit buildup
•Help remove existi ng scal e deposits
•Inhibit boiler and component c or r osion
The type of descaler used has a coiled wire
(Cathode) wrapped around a solid cylindrical c or e
(Anode) that hangs by an open loop from the f ront
horizontal support rod inside the boil er .
The descaler materials serve as a sacrif icial
"Anode" and "Cathode" combination that c hem ically
reacts with the contents of the boiler t o meet the
three objectives outli ned abov e.
If the coiled wire has eroded away or if t he
cylindrical core of t he descal er has eroded away to
approximately half its original diameter, a new
descaler should be installed. The size of a new
descaler is approximately: 1 3/ 8" diameter and 3
3/4" long at the core.
NOTE: Whil e t he diameter of the descaler
decreases through erosion, the length of the
descaler will increase. If the descaler has increased
to a length that is touching the bottom of the boiler
shell, the descaler should be replaced.
The descalers are accessible through the "heat
exchanger" opening in the boiler onl y. For removal
of the heat exchanger refer to " HE AT
EXCHANGER" under "REMOVAL AND
REPLACEMENT OF PARTS".
To install a new descaler, stretch the coil ed wire at
the top to elongate the wire and form an open l oop.
Hang the descaler on the front horizontal support
rod so that its core will be completely below the
minimum water level in the boiler but hanging f r ee.
The descaler must not contact the boil er shell or the
heat exchanger casting.
WATER LEVEL PROBE HOUSING BLOWDOWN
The water contained in the probe housing, being
under pressure, should be "blown through" this
manual valve and be not iceably visible ex hausting
out the steamer drain. The probe housing blowdown
should be performed in a time f rame dependant on
the quality of the local water suppl y and steamer
usage. In hard water areas or for steamers heavil y