d. If the “Click” is not heard, replace solenoid with either a part for 1” valve or 1.5”
valve.
17.3.10 When servicing pulse valves, refer to the diagram below.
Item Description
DP 20 (3/4") DP 25 (1") DP 40 (1 1/2")
1
Core Tube
TP10
TP10 NGP M10 BH10
TP10 NGP M10 BH10
2 Plunger Assembly NGP
3 4
Nut & Washer
M10 BH10
Coil
5 PG9 6 Screws & Washer M 6 X 20 M 6 X 20 M 6 X 20 7 Cover C 25 C 25 C 25 8 Diaphragm M 25 M 25 M 25 9 Screws & Washer M 8 X 20 10 Middle Cover I C 40 11 Diaphragm Spring S R 12 Main Diaphragm M 40 13 Body BDD 20 BDD 25 BDD 40 14 Conic Seal GCON20 GCON25 GCON40 15 Seal Retainer OG20 OG25 OG40 16 Coupling TDAL20 TDAL25 TDAL40 Connector PG9 PG9
17.3.11 Check and replace, if necessary, the access door gaskets and dust drawer gaskets, if applicable.
17.3.12 Inspect smoke detection/fire suppression system.
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