Crown Boiler KSZ Series, Руководство по установке, Страница: 32 / 40

30
XII Service and Maintenance
The following procedure should be performed on a weekly basis:
For boilers equipped with a #67 low water cut-off, blow down the low water cut-off following the instructions on the
yellow sticker adjacent to the low water cut-off. During this blow down, the low water cutoff should shut down the burner. If
it does not, the low water cut-off should be replaced immediately.
The following procedure should be performed on an annual basis:
1) Turn off electrical power and oil supply to the boiler.
2) Inspect the low water cut-off:
•
For Hydrolevel CG450 low water cut-offs - Remove and inspect the probe for scale and sediment buildup. Clean
any sediment or scale from the probe with a scouring pad or steel wool. Consult the Hydrolevel CG450 manual for
any additional maintenance information. Test the low water cut-off before placing the boiler back into service.
•
For McDonnell & Miller #67 low water cut-offs - Remove and inspect switch and float mechanism. Inspect float
bowl for mud accumulation. Clean as required. Replace the switch and float mechanism every five years or 100,000
cycles. Consult the McDonnell and Miller #67 manual for any additional maintenance information. Test the low
water cut-off before placing the boiler back into service.
3) Allow the boiler to cool to room temperature and drain the boiler. Remove the 1-1/2” plug from the unused return tapping.
Use a flashlight to inspect the bottom row of pushnipples for accumulated scale or mud. If a significant amount is present, use
the following procedure to clean the inside of the heat exchanger:
a) Temporarily install a 1-1/4” inch or larger full port ball valve in place of the 1-1/2” plug. Temporarily pipe the outlet
of this valve to a location where hot water and steam can be safely discharged.
b) Make sure that this valve is closed and that the water level is at the normal water line.
c) If a king valve is present in the steam main takeoff, close it. Alternatively, temporarily replace enough of the
vents on the mains and/or radiators with plugs so that 2-5 psi can be developed when the boiler is fired.
d) Fire the boiler and allow it to steam until 2-5 psi is registered on the gauge.
e) Turn off the burner and immediately fully open the 1-1/4” valve.
f) Allow the boiler to blow down until either the water runs clear or the water level reaches the bottom of the gauge
glass.
g) Allow all parts of the boiler to cool to room temperature. Drain the boiler completely and remove the 1-1/4” valve.
h) If significant mud or scale is still present in the bottom of the boiler, repeat steps (b) through (g) until all mud or
scale is removed.
i) Once all mud or scale is removed, replace the 1-1/4” valve and temporary blow-down piping with the standard plug.
After all parts of the boiler are at room temperature, refill the boiler to the normal water line.
TABLE 3c: RIELLO BURNER CONFIGURATION AND SETUP DATA
BURNER MODEL
40F5 40F5 40F5 40F10 40F10 40F10
STANDARD DEL DEL DEL. DEL HAGO DEL
NOZZLE 0.60/60A 0.85/60W 1.00/60A 1.25/60B 1.35/45B 1.65/45B
PUMP PRESS (psi) 150 150 150 150 150 150
TURBULATOR
0 2 4 1
1.5 2
AIR
SHUTTER SETTING 2.60 2.85 4 3 3 3.8
DRAFT OVER FIRE
(in w.c.)
MAX. SMOKE
(bacharach scale)
FLUE CO2 (%)
MIN. 11.0 11.0 11.0 11.0 11.0 11.0
MAX 12.5 12.5 12.5 12.5 12.5 12.5
KSZ120 KSZ175
#1 #1
BOILER MODEL KSZ065 KSZ075 KSZ100 KSZ090 KSZ125 KSZ150
#1 #1 #1 #1
-0.02
KSZ200
-0.02 -0.02 -0.02 -0.02 -0.02