MaInTenanCe
www.DaikinApplied.com 139 IM 893-10 • ROOFPAK SINGLEZONE UNITS
Control Panel Components
The following motor control protection is provided.
Table 35: RoofPak Individual Motor Control and Protection
Motor Type Short Circuit Overload On-Off
Compressor < 100
Amps
MMP Internal Contactor
Compressor > 100
Amps
CB Internal Contactor
Condenser Fans MMP VFD Contactor
EAF, One Fan CB* OL Contactor
EAF, 2-3 Fans CB* Contactor
SAF & RAF with VFD
No Bypass
In Bypass
CB*
CB
VFD
OL
Contactor
Contactor
MMP = manual motor protecto
Internal = vendor motor protect
CB = circuit breaker [* FB with MD4
OL = over load relay
Manual Motor Protector (MMP)
The manual motor protector (MMP) provides coordinated
branch circuit, short circuit protection, a disconnecting means,a
motor controller, and coordinated motor overload protection. A
short circuit indicator with manual reset is mounted alongside
of each MMP as a means to differentiate between a short
circuit and overload trip conditions.
The MMP trip points are factory set. Do not change unless
the motor ampacity changes or the MMP is replaced with
a new device with incorrect setpoint adjustment. Any other
non-authorized trip point or setpoint adjustment voids all or
portions of the unit’s warranty. Authorized setpoint adjustments
accomplished as follows
1. For motors with a 1.15 service factor, rotate the arrow
onthe dial to correspond to the motor FLA.
2. For motors with a 1.0 service factor, multiply the
motor FLA by 0.9; then rotate the arrow on the dial to
correspond to that value.
To reset a tripped MMP, clear the trip by rotating the knob
counterclockwise to the OFF (O) position; then rotate knob
clockwise to the ON (I) position. See Figure 132.
WARNING
If an overload or a fault current interruption occurs, check
circuits to determine the cause of the interruption. If a fault
condition exits, examine the controller. If damaged, replace it
to reduce the risk of re or electrical shock.
Other MMP Features:
• Three-position rotary operator: OFF (O)-TRIP-ON (I)
(Figure 132).
• Lockout—tagoutable rotary operator: turn the rotary
operator to OFF (O), slide out the extension arm, and
insert a lockout pin.
• Ambient compensated –20°C to +40°C.
• Single-phase sensitivity: if one phase exceeds setpoint,
all three phases open.
• Trip test: insert a 9/64” screw driver in the test slot (Figure
132) to simulate a trip.
Figure 132: Manual Motor Protector
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