Tecumseh AH5540E Service Handbook page 51

Checking for Other Electrical Problems in Single-phase Motors
This section provides procedures for checking the components such as the thermal pro-
tector, relay and capacitor in a single-phase compressor. Table 4-3 (below) can be used
to locate the appropriate procedure for the compressor you are servicing. Examine the
compressor and determine presence and/or the type of:
• Thermal protector (internal or external)
• Relay (current, potential or PTC)
• Capacitor(s) (start or run)
With that information, use Table 4-3 to determine the location of the procedure for the
compressor you are servicing.
For more information on:
• Compressor motor types, see "Single-phase Compressor Motor Types" on pages 16-
17.
• Thermal protectors, see "Hermetic Compressor Thermal Protectors" on page 19.
• Starting relays, see "Compressor Motor Starting Relays" on pages 21-24.
• Capacitors, see "Selecting Capacitors" on pages 24-26.
Table 4-3: Locating Service Procedures by Component Types
Thermal Protector
Compressor Motor
Type
Internal
Resistance Start In-
duction Run (RSIR)
(Split-Phase)
Capacitor Start In-
duction Run (CSIR)
Capacitor Start and
Run (CSR)
Permanent Split
Capacitor (PSC)
If your compressor has:
Type
External Current
√ √
√
√
√ √
√
√
√
√
√
√
√
Relay Type Capacitor Type
Potential PTC
WIRED
MODULE
√
√
√
WIRED
MODULE
Go To:
Page
Run Start
44
46
48
√
50
√
53
√ √
56
√ √
59
√
62
√
64
√
66
√ 68
43