Cleveland 21CGA5 handleiding
Handleiding
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18
CHAPTER 5 SHUTDOWN AND CLEANING PROCEDURES
A. STEAM GENERATOR BLOWDOWN
1. Power Off (Automatic Blowdown)
• Blowdown occurs automatically when steamer is turned OFF at its ON/OFF switch
• Steam generator drain valve is rinsed with fresh water and drained
• Blowdown at frequent intervals helps decrease scale buildup in steam generators
• Blowdown at frequent intervals reduces frequency of descaling and other maintenance
2. Blowdown Frequency
Supply water quality determines how often blowdown must be performed
More frequent use and higher content of total dissolved solids and particulates in feed water require
more frequent blowdown
A determination should be made before installation if additional blowdowns will be required as part
of daily maintenance based on water quality analysis done before installation
This information should be noted in the daily maintenance program developed for the equipment
After it has been determined whether or not the local water supply meets the minimum supply water
quality standards, observe the following guidelines to establish proper blowdown scheduling:
•
When using a supply water system that does not meet the minimum supply water quality
standards, blowdown must be performed after every 4 hours of operation, or more frequently as
required, and at the end of each shift
•
For steamers using water that meets the minimum supply water quality standard, either
naturally or by using a water treatment system, blowdown must be performed at the end of
each shift
3. Blowdown Procedure
When each steamer is turned OFF, its blowdown cycle starts and runs automatically
A complete cycle takes about 3 minutes.
Do NOT turn power OFF at the main external power switch during blowdown
a. Turn ON/OFF switch to OFF.
b. Red indicator light turns OFF
c. Drain valve opens
d. Drain valve draws water from steam generator
e. Fill valve operates for 3 minutes to help flush debris through the drain valve as generator
drains
f. At end of 3-minute blowdown cycle: fill valve closes
g. When blowdown is complete steamer can be restarted, or shutdown procedure completed
•
To restart steamer, refer to POWER ON in Chapter 2, Section C
•
To shut down steamer, refer to SHUT DOWN and CLEANING in Chapter 5
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Productinformatie
| Merk | Cleveland |
| Model | 21CGA5 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3358 MB |
