__________________________________________________Chapter 4 – Smoke Control Section, Page 4-19
Smoke Control – Maintenance (Cont.)
Six Month Maintenance
Every 6 months remove and inspect the ESP Cells and check the following:
Extreme Caution: Before removing the lead wires from Cells, a Standard Safety Voltage Test must
be conducted as described on page 4-11.
This test is necessary to insure that the Grounding Disc
made proper contact with the brass grounding screws to drain all the residual power from the
transformer.
1.
Initiate a wash cycle and check all the spray nozzles to ensure that they are spraying properly. Also
check to see that the wash manifolds are oscillating up and down.
2.
Examine the ESP Cells for the following:
a.
Check for any missing or loose ionizer wires. Replace wires as necessary. Refer to the
Troubleshooting Section page
4-30
for instructions.
b.
Check for any physical damage to the collector plates. Plates can become bent at their
corners and must be straightened to maintain proper plate spacing (Refer to page 29).
c.
Check for any grease film build-up on the high voltage insulators (white porcelain
material). Clean the insulators to avoid possible high voltage “tracking” to the ground.
d.
Check for any material which has lodged or built up between adjacent plates.
Periodic Pressure Wash or Steam Cleaning
The National Fire Protection Association Standard 96, (NFPA-96) requires all hood, ducts and fans be
inspected and cleaned, if needed, at periodic intervals based on the type of cooking. If cleaning of the
ClearAir Unit is required the cleaning company must be made aware of the following cautions:
Caution 1: Never use any caustic chemicals as they could damage the aluminum in the ESP Cells. If caustic
chemicals are to be used, the ESP Cells must be removed and cleaned separately.
Caution 2: Some commercial hood cleaning companies blow a fire retardant chemical into hood and duct
systems. Fire retardant chemicals should never be applied to any portion of the ClearAir Unit. If retardant is
applied, it must be removed.
Periodic Pressure Wash or Steam Cleaning Note: When pressure washing or steam cleaning a majority of
the water will drain out the drain located in the ESP Cell compartment. Additional water may be drained by
removing the drain plug on the additional drain located on the side of the unit (Refer to Figure 4-19-1).
Figure 4-19-1
Drain Plug
Drain Plug
