Cleveland SteamCraft 10 Service Manual page 118

Page 112 SteamCraft 10 Service Manual, Chapter 6
PHASE 1 TESTING
IT:1-1. Is there water standing in the float cylinder?
Turn on the main disconnect switch and start a stopwatch.
IT:1-1.5 Is there 120v at terminals X1, X2 on the transformer?
IT:1-2 Does water flow from BOTH the float cylinder rinse nozzle and the 3-way valve drain
port?
Printed 3/93
This phase of testing pertains to components associated with the water fill.
drain, and blowdown functions. The panel ON/OFF switch is OFF through-
out this phase. The TIMED/MANUAL switch and TIMER settings arc not
significant while the ON/OFF switch is in the OFF position.
Simultaneous Testing.
Examine the components of the upper and lower compartment and steam
generator groups simultaneously during Phase 1.
NOTE: The drain valve is normally open. With power off at both the
ON/OFF switch and Main Disconnect, the drain valve is open. The steam
generator and float cylinder are empty.
Water in the float cylinder indicates that during the last shutdown sequence,
water did not drain from the steam generator.
1. Check for blockage in the plumbing between the float cylinder and the
steam generator.
2. Check the drain solenoid valve and adjoining plumbing for blockage.
3. Check the drain line and air gap between the line and floor drain.
4. If the plumbing, drain lines, and drain valve are not blocked, refer to
component test CT:1 and test the drain (3-Way) solenoid valve.
NOTE: When electric power is turned ON at the main disconnect switch
with the panel ON/OFF switch OFF, an automatic 3-minute blowdown
cycle scans. Use the stopwatch to check that the 3-minute timer stops the
blowdown cycle in three minutes.
Check transformer according to component test CT: 19.
NOTE: During the automatic blowdown cycle, the water fill, rinse, and
drain valves are open. Fresh water flushes the float assembly and drains into
the steam generator. Water rushing through the 3-way drain valve pulls
water from the steam generator (Refer to Drain Valve Operation on page
81).
If water flows from BOTH the float cylinder rinse nozzle and the 3-way
valve drain port; the 3-Minute Timer, the water fill, rinse, and drain (3-way)
valves are functioning properly. Continue the procedure with test IT:1-6.
Models 24-CGA-10 and 24-CEA-10
Cleveland Range, Inc.