Grindmaster Manuals: Disassembly Guide for Water Heaters

Diassembly

Disassemble in the same general order as indicated in exploded-view illustrations except as noted in the following steps:

1.De-pressurize valve and disconnect electrical power source.

2.To remove solenoid coil:

Insert small screwdriver into gap in voltage nameplate. Slide screwdriver tip under coil retainer and snap off. If replacing coil, use knife to separate adhesive-backed valve nameplate from coil. Keep valve nameplate.

3.To remove collar, use service tool X11981-1 shown in Figure 1. Notes: Do NOT Lose Nameplate, as it is extremely

important if it becomes necessary to order a parts kit, coil or duplicate valve .

Assembly

1.Assemble in the reverse general order of disassembly.

2.Lubricate gasket and "O" ring sparingly with a compatible lubricant such as a Silicon base lubricant.

3.All moving parts, must move freely over the full length of its intended travel.

Troubleshooting

1.Check system fuses, electrical wiring and system source voltage as specified.

2.Is flow direction arrow on valve the same as system flow direction?

Figure 1

COIL RETAINER

NAME PLATE

SERVICE

TOOL (K)

COIL ASSEMBLY

COLLAR “O” RING (K)

ENCLOSING TUBE

PLUNGER AND

SPRING ASSEMBLY (K)

GASKET (K)

BODY

(K) INDICATES ITEMS INCLUDED IN REPAIR KIT

Cleaning

As with all valves, it may become necessary to clean them periodically to keep them in peak operating condition. Any cleaning methods or fluids used should be compatible with valve materials.

Inspection

1.All moving parts and elastomers should be clean in appearance without permanent set springs should be free of corrosion. If any appear damaged, replace them with a parts kit which contains all moving parts necessary to rebuild valve to an "as new" condition.

2.Inspect enclosing tube assembly for wear, exterior dents or other conditions which would impair free movement of the poppet and/or plunger assembly. Its interior should be clean and free from any obstructions. Be especially critical of its valve seat.

Testing

1.Apply correct voltage to valve solenoid and cycle solenoid sever- al times. A distinct click should be heard each time the solenoid is energized.

2.Pressurize valve and check for leaks.

Note: Alco solenoid valves are equipped with a contlnuous-duty solenoid coil,which when energized for an extended period of time becomes hot to the touch...this is a safe operating temperature. Any excessive heating will be indicated by smoke and odor of burning coil Insulation.

3.Are all system relays operating?

4.Is system source pressure as specified?

5.Are all system components free from obstructions?

Repair kits

The following Repair Kits are available:

VALVE		KIT		VALVE		KIT
SERIES		PART NO.		SERIES		PART NO.
202CB	-B	K-1063		204CD	-B	K-1072
202CB	-F	K-1066		204CD	-F	K-1075
202CB	-N	K-1067		204CD	-N	K-1073
202CB	-P	K-1064		204CD	-P	K-1076
202CB	-T	K-1068		204CD	-T	K-1077
202CB	-V	K-1065		204CD	-V	K-1074
		VALVE		KIT
		SERIES		PART NO.
		For 1/4”		Orifice Only
		204CD	-B	K-1162
		204CD	-V	K-1164
		204CD	-T	K-1167
		204CD	-P	K-1166

Coils

1.Junction box (AMG) is supplied as standard on all valves.

2.The following coil housings are available:

a. Conduit Connection (AMC)	c. Open Frame (AMF)
b. GROMMET 113" Leads (AML)	d. Spade Connection (AMS)
3. Use only Alco coils on Alco valves.

ALCO CONTROLS DIVISION • EMERSON ELECTRIC CO.

P.O. BOX 12700 • ST. LOUIS, MISSOURI 63141 • 314-569-4500

CUSTOMER SERVICE • 314 569 4666

American Metal Ware Hot Water Boiler Page 12