Maintenance; General; Daily Cleaning; Removing Lime And Mineral Deposits - Hatco GRCD Series Installation And Operating Manual

General

Hatco Glo-Ray Heated Display Cases are designed for maximum
durability and performance, with minimum maintenance.
WARNING
ELECTRIC SHOCK HAzARD:
• Turn OFF power switch, unplug power cord, and allow
unit to cool before
adjustments, or maintenance.
• DO NOT submerge or saturate with water. unit is not
waterproof. Do not operate if unit has been submerged
or saturated with water.
• Do not steam clean or use excessive water on unit.
• This unit is not "jet-proof" construction. Do not use jet-
clean spray to clean this unit.
• This unit must be serviced by qualified personnel only.
Service by unqualified personnel may lead to electric
shock or burn.
• Do not clean unit when it is energized or hot.
• use only Genuine Hatco Replacement Parts when
service is required. Failure to use Genuine Hatco
Replacement Parts will void all warranties and may
subject operators of the equipment to hazardous
electrical voltage, resulting in electrical shock or burn.
Genuine Hatco Replacement Parts are specified to
operate safely in the environments in which they are
used. Some aftermarket or generic replacement parts
do not have the characteristics that will allow them to
operate safely in Hatco equipment.
This unit has no "user-serviceable" parts. If service is
required on this unit, contact an Authorized Hatco Service
Agent or contact the Hatco Service Department at
800-558-0607 or 414-671-6350; fax 800-690-2966; or
International fax 414-671-3976.

Daily Cleaning

To preserve the finish of the unit as well as maintain
performance, it is recommended that the unit be cleaned daily.
NOTICE
use non-abrasive cleaners and cloths only. Abrasive
cleaners and cloths could scratch finish of unit, marring its
appearance and making it susceptible to soil accumulation.
1. Turn off the unit, unplug the power cord, and allow the unit
to cool.
2. Wipe down all exterior and interior surfaces. a non-abrasive
cleaner may be used for difficult stains. Hard to reach areas
should be cleaned using a small brush and mild soap.
• make sure to clean the interior of the unit thoroughly.
• Clean the glass front, side, and rear panels using
ordinary glass cleaner and a damp, soft cloth or paper
towel.
3. Empty and clean the water reservoir using a damp cloth
(humidified units only).
4. Wipe dry the entire unit with a clean, non-abrasive cloth.
Form No. GRCDHDm-0712
performing any cleaning,

Removing Lime and Mineral Deposits

Use the following procedure for periodic cleaning and deliming
of the water reservoir on humidified models.
use of distilled water in the water reservoir of humidified
units is recommended to preserve the life of electrical and
mechanical components. If non-distilled water is used, the
reservoir will require periodic cleaning and deliming (refer
to the MAINTENANCE section for cleaning procedure). unit
failure due to lime or mineral deposits is not covered under
warranty.
NOTE: The lime and mineral content of the water used for daily
operation will determine how often the deliming
procedure must be performed.
NOTE: Perform this procedure when the unit will not be used
for a period of time, such as the end of the day.
1. move the Power ON/OFF (I/O) switch to the OFF (O)
position and unplug the power cord. allow the unit to cool.
2. Remove the water reservoir cover and water reservoir.
Empty the water reservoir.
3. Reinstall the water reservoir.
4. Fill the water reservoir with a mixture of 75% water and 25%
white vinegar. Do not use flavored vinegar.
5. Plug in and turn on the unit. allow the unit to run for 30
minutes.
6. move the Power ON/OFF (I/O) switch to the OFF (O)
position and unplug the power cord. allow the unit to cool.
7. Empty the deliming mixture from the water reservoir.
8. Continue to fill and rinse the water reservoir with clean water
until the reservoir is clean.
9. Install the water reservoir into the unit and fill the reservoir
as usual for daily operation.
10. Install the water reservoir cover.

Replacing Display Light Bulbs

use only light bulbs that meet or exceed National
Sanitation Foundation (NSF) standards and are specifically
designed for food holding areas. Breakage of light bulbs
not specially coated could result in personal injury and/or
food contamination.
The display lights are incandescent light bulbs that illuminate
the warming area. Each bulb has a special coating to guard
against injury and food contamination in the event of breakage.
1. Turn off the unit, unplug the power cord, and allow the unit
to cool.
2. Unscrew the light bulb from the unit and replace it with a
new, specially-coated incandescent light bulb.
NOTE: Hatco shatter-resistant light bulbs meet NSF standards
for food holding and display areas. For 120, 120/208,
and 120/240
02.30.043.00. For 220 or 240 V applications, use Hatco
P/N 02.30.058.00.
15

MAINTENANCE

NOTICE
WARNING
V applications, use Hatco P/N