Carter-Hoffmann PHB15 - Manual (Page 7)

7
GENERAL MAINTENANCE INSTRUCTIONS
DOORS
Never tip cart forward or open doors to drain water during or after washing. This can cause serious damage to
the hinges, doors and latches.
CASTERS
Some casters are equipped with Zerk grease fittings so that they may be easily lubricated with a grease gun.
Recommended lubrication is at least once every six months. Lubrication will be required more frequently if carts
are cleaned with a hot water or steam cleaning system. Casters with special bearings are recommended for
frequent cart wash or steam cleaning situations.
HINGES
Your cart doors and hinges have been factory aligned with nylon spacers to assure positive latching and
smooth action. Be sure to replace these washers if the are removed when cleaning doors and hinges. If doors
are removed for cleaning, we recommend that they be put back on the same cart to assure the best possible
alignment and operation.
LATCHES
Check frequently to insure that all door latches are secure. Latches may become “sticky” due to residue build-
up from daily use and cleaning. Lubricate latches regularly with WD-40, silicone spray, graphite or other com-
mercial lubricants for stainless steel products. Do not use oil.
PERIMETER BUMPERS
Vinyl which has been dislodged from the channel due to severe bumping or scraping can be pried back into
place with a common screwdriver.
MOVING THE CABINET
Use the recessed side hand grips or rear push bar to move the cabinet. The condensing unit is located at the
base of the unit, providing a low center of gravity and placing the pan slides at a more accessible height.
DIGITAL THERMOSTAT CALIBRATION
1. Remove operator right duct assembly to gain access to the bulb.
2. Remove bulb from inside wall.
3. Remove front control panel to gain access to the digital thermometer.
4. Place bulb into a glass of ice water.
5. Use a calibration potentiometer to adjust to 32°F (0°C).
6. Reverse the procedure to reassemble.
CLEANING THE CONDENSER COILS
To maintain proper temperatures in the air screen refrigerator and to prolong the life of the compressor, the
condenser coils must be cleaned on a regular basis. It is recommended that the coils be checked and cleaned
monthly. This procedure is not covered under warranty, however, it is to be performed by only qualified engi-
neering/maintenance personnel.
1) Turn off unit and unplug from electrical power source.
2) To access the coils, remove the louvered panels located at the bottom of the unit.
3) Use a vacuum cleaner with a brush attachment to clean the coils. In extreme cases of dust and grease
build-up, compressed air may be required for cleaning the coil fins. Use extreme caution when doing this.
The air curtain must be moved to an isolated location to perform this procedure. Once the coils have been
cleaned, inspect for bent coil fins. Straighten bent fins using a straightening comb tool.
4) The compressor motor and other components can be cleaned using a stiff brush or whisk broom.