Toyotomi Laser 300 Service Manual page 23

L A S E R L A S E R
Section 4
Control Circuit Board
4-2
Time Chart
MA-252 series
LASER 300 / LASER 530 / LASER 560 / LASER 730
A： LASER 300 / LASER 530
No Item
1 Timing
1 Blower motor starting timing
Preheat timing
2
Fuel pump starting timing
3
Blower motor (BM)
4
delay timing
Fan motor (FM)
5
timing
Fan motor H speed timing
6
Pre-combustion timing
7
8 BM delay timing
9 Fuel pump delay timing (T9)
FM delay timing
10
Post-purge timing
11
12 Miss ignition timing
Miss flame timing
13
Motor lock (initial) timing
14
15 Identical combustion timing
Initial H1 combustion timing
16
H E A T I N G H E A T I N G
B： LASER 560 / LASER 730
Specification
5 ± 2 sec.
(T1)
(T2) Room temperature above 15 deg. C
A： 90±8 sec.
B：180±8 sec.
A：120±10 sec. 0 deg. C < room temperature < 15 deg. C
B：360±10 sec.
A：240±12 sec. Room temperature below 0 deg. C. Note that when
automatic preheating is conducted after post purging
B：540±12 sec.
is completed, it should last 90 seconds regardless of
the room temperature.
5 ± 2 sec. Shift to M2 after flame detection
(T3)
15±3 sec. At start
(T4)
starting 120±10 sec.
(T5)
5 ± 3 sec. At start
(T6)
300±15 sec.
(T7)
(T8) 5±2 sec.
1±0.5 sec.
(T10) 30±5 sec.
(T11) 180±10 sec. No flame after detection
(T12) 140 ± 9 sec.
(T13) 3±2 sec.
5±2 sec. When slow rotation has continued for more than 5
(T14) seconds during normal operation
30 ± 3 sec. When combustion shifts from High to Low and Low to
(T19) High
300 ± 30 sec. For correcting flow temperature characteristics only
(T21) when
combustion
S Y S T E M S S Y S T E M S
Trouble Shooting
Conditions
High combustion starts after reserve
Remarks
21
S E R V I C E M A N U A L