Wash - Greenheck Grease Trapper ESP Installation, Operation And Maintenance Manual

Sequence of Operation -
2. WASH: System goes through cycles to clean and
dry dirty ionizing-collecting cells
The wash cycle is recommended to be performed
daily on the unit and uses an automated wash down
sequence to remove the grease that has been collected
on the impingement filters and ESP cells. The length
of time and frequency of washing will be determined
by the grease load in the airstream. The times shown
are the factory settings but can be adjusted as needed
based on site conditions.
The wash cycle can be started three different ways:
1. User presses the wash button on the keypad or
touch screen.
2. An external wash contact is closed (terminals WS-1A
and WS-1B).
3. The controller can be set up to wash the unit
automatically based on a schedule set up on the
controller.
The wash sequence will wash each impingement and
ESP module using the steps below. For units with
multiple ESP modules, the wash sequence will repeat
itself for each module with the exception of the drip dry
and fan dry sequence. The drip dry and fan dry portion
will start once all of the modules have completed
washing and are used to dry the entire unit before
placing it back into service.
Wash Override: The wash sequence can be stopped
by pressing the wash button on the user interface. This
will cancel the wash sequence and return the PCU to
normal operation. When calling for a wash or during the
wash sequence if the fan is turned on either by the fan
button, remote fan enable contact, or the fire system is
activated the wash sequence will stop and the exhaust
fan will turn on.
Rinse
• Impingement
• Exhaust Fan - Off
• Main and Impingement or ESP Module Solenoid
Valve - Open
• Detergent Pump - Off
• Time
- 3 minutes (Housing sizes 15, 30, 45, 60 and 90
- 6 minutes (Housing size 135)
Detergent
• Exhaust Fan - Off
• Main and Impingement or ESP Module Solenoid
Valve - Open
• Detergent Pump - On
• Time
- 30 seconds (Housing sizes 15 and 30)
- 1 minute (Housing sizes 45, 60 and 90)
- 2 minutes (Housing size 135)
12 Grease Trapper ESP™ Kitchen Exhaust Pollution Control System
continued
Soak
• Exhaust Fan - Off
• Main and Impingement or ESP Module Solenoid
• Detergent Pump - Off
• Time
Rinse
• Exhaust Fan - Off
• Main and Impingement or ESP Module Solenoid
• Detergent Pump - Off
• Time
Detergent
• Exhaust Fan - Off
• Main and Impingement or ESP Module Solenoid
• Detergent Pump - On
• Time
Rinse
• Exhaust Fan - Off
• Main and Impingement or ESP Module Solenoid
• Detergent Pump - Off
• Time - 3 minutes
Rinse
• Exhaust Fan - Off
• Main and Impingement or ESP Module Solenoid
• Detergent Pump - Off
• Time
Drip Dry
• Exhaust Fan - Off
• Drain Solenoid - Open
• Impingement or ESP Module Solenoid Valve -
• Detergent Pump - Off
• Time - 1 minute
Fan Dry
• Exhaust Fan - On
• Drain Solenoid - Open
• Impingement or ESP Module Solenoid Valve -
• Detergent Pump - Off
• Time - 90 minutes
Valve - Off
- 3 minutes (Housing sizes 15, 30, 45, 60 and 90
- 6 minutes (Housing size 135)
Valve - Open
- 4 minutes (Housing sizes 15, 30, 45, 60 and 90)
- 8 minutes (Housing size 135)
Valve - Open
- 30 seconds (Housing sizes 15 and 30)
- 1 minute (Housing sizes 45, 60 and 90)
- 2 minutes (Housing size 135)
Valve - Closed
Valve - Open
- 4 minutes (Housing sizes 15, 30, 45, 60 and 90)
- 8 minutes (Housing size 135)
Closed
Closed
®