Daikin Maverick II MPS062E, Installation And Maintenance Manual

Page: 103 / 120

Maintenance
www.DaikinApplied.com 103 IM 991-2 • MAVERICK II ROOFTOP
Control Panel Components
The following motor control protection is provided.
Table 19: 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)
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 fire or electrical
shock.
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 87.
Other MMP Features:
• Three-position rotary operator: OFF (O)-TRIP-ON (I)
( Figure 87 ).
• 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
87 ) to simulate a trip.
Figure 87: Manual Motor Protector