diff --git a/machines.lua b/machines.lua
index 9732efe..2aa1ce9 100644
--- a/machines.lua
+++ b/machines.lua
@@ -955,11 +955,13 @@ local function registerSimpleElectricItemProcessor(config)
 					inv:set_stack("powerStorage",1,powerStorageSlot)
 				end
 			end
-			if srcSlot:get_count()>0 and meta:get_float("maxSrcTime")<=0 and meta:get_int("industrialtest.powerAmount")>=requiredPower then
+			if srcSlot:get_count()>0 and meta:get_int("industrialtest.powerAmount")>=requiredPower then
 				local output=craftResultProxy(config.method,srcSlot)
 				if output.time>0 and inv:room_for_item("dst",output.item) then
-					meta:set_float("srcTime",0)
-					meta:set_float("maxSrcTime",output.time*config.efficiency)
+					if meta:get_float("maxSrcTime")<=0 then
+						meta:set_float("srcTime",0)
+						meta:set_float("maxSrcTime",output.time*config.efficiency)
+					end
 					minetest.swap_node(pos,{
 						name="industrialtest:"..config.name.."_active",
 						param2=minetest.get_node(pos).param2